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LAKE VICTORIA FISHERIES SERVICE ANNUAL REPORT - 195960bull GENERmiddotlL

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10 In view of the work involved in closing down the Department during the latter part of Maj and June and in view of the Chief Fisheries Officers departure on leave pending retirement on 22nd June 196Q in the Kenya itbull has been necessary to write this brief ~nnual Report to~r

cover the period from July 1959 up t~ the end of ~pril 1960 only 4~S is usual however the catch record summaries cover the full previous calendar year - in this case 1959- ~bull t

2 The legislation necessary to effect the disbandment

i of the Department was passed by the Central Legislative

4 ssembly in September 1959 and this combined with restricted financial prOVision resulted in the reduction of activities to an essential minimum Records of landings have been maintained at the various recording stations around the Lake a certain amount of fish marking has been carried out and the re-engining of the vessels and conshystruction of one of the two remaining powered dinghies for them has been completed as planned

3 The new Teleradio 5l radio eCluipment installed inf Heron and Darter has given excellent service throughout

the year as~has al~o the Redifon eguipment at Headguarters~t

4 The Departments motor vehicles have given continshyr uous and ~rouble-free sQrvice and are being handed over to the Territorial Governments in good running order

Igt 5 Considerable anxiety about the future was caused to 011 members of the staff by the protructed delay in the declaration of Territorial Government intentions regarding

c them At the time of writing the position is that ~ 1 Mr 4ltkinson has accepted a transfer to the Tanganyika

Government Mr Boundford has accepted a transfer to Ebull t~~j ~~~ ~griculture and F~s Research Organization Muguga J Wu Greenway and Mr Watson are understood unofficially to

be considering transfer to the Uganda and Kenya Governments respectively The Chief Fisheries Officer and I~ Briggs have as yet found no future employment

Ii 11 CENCING VvORKI

6 The following details of licences issued bave been supplied by the Fisheries Officers responsible for the three Territories and relate to the calendar year 1959

KENYJ

Fishermens Licences issued 4492 Fishing bGats registered bullbullbull 443 karuas 957 canoes

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UGi1NDAt

Fishermens licences issued bull No figures availableif Fishing canoes registered bullbullbull 1750 (1469 Buganda 214 Busoga t 67 J3ukedi)

Seine Net Permits issuedbullbull 45

Crocodile Hunting Permits issuedbull 8

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TANGlNYIKt~-Fishermens licences issued 763( (Estimated actnAl total

of fishArmen - J2OOO)Fishing canoes registered bullbullbullbull l835 ( Estimated actual totAJ

of canoes - 2200) Seine Net Permits issued bull 295 Crocodile Hunting Permits ~ssuedbullbull 60

MOTOR FISHING VESSELS amp DINGHIES

7 lVI V Darter the second vessel to be re-enginedWas completed late in~October 1959 and was returned to service at Entebbe where she has given no trouble Work was started on IVI V Pelican in January 1960 and she was completed bythe end of April 1~ t the time of writing she has run several hours of trials without any signs of trouble und can be considered fit for return to service This means that all three vessels have now been completely overhauled re-engined and returned to service without suffering from any instal shylational troubles consequent upon the fitting of the new engines This happy state of affairs reflects the greatest possible credit upon Mr Boundford the Maintenance Superinshytendent and his staff

8 Construction of an ll-foot dinghy in Permaply was completed in March 1960 and the craft was fitted with a small Coventry-Victor petrol engine and Hotchkiss cone propeller unit This dinghy proved satisfactory in trials and was accordingly handed over to the Fisheries Officer Entebbe and put into service with Darter

9 It had been intended to construct a similar dinghy for Pelican ll and indeed the timber plywood engine and prop~ller unit were all in stock for the job Unfortunately the quite sudden transfer of the Maintenance Superintendent to Muguga to take up a vacant post there precluded the possibility of constructing this second dinghy

FUTURE OF THE DOCKYARD amp WORKSHOP PiCILITIES IT KISUlvru

lO A proposal was worked out by the Provincial Commissioner Kisumu and the Chief Fisheries Officer for the continuance of the Departments dockyard facilities and workshop as a small private unde~taking Which would continue to employ the present Maintenance Superintendent Good progress had already been made in working out the details of this scheme when the Maintenance Superintendents transfer to Muguga took place The other interested party was reluctant to proceed vi th the matter on his own and the proj eet was therefore abandonedbull

ll With the very heavy commitments which the EARail shyways amp Harbours have at present maintenance and repair of the KenYa and Tanganyika Fishery vessels may present considshyerable problems after the disbandment of the Department

l2 As things now stand most of the movable assets of the Workshops will come up for sale with the Headquarters assets prior to closing down the proceeds being divided between the Territorial Governments

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13 A Board of Survey~ consisting of the 4~ccountant

General (Chairman) the Chief Fisheries Officer~ Mr Powell (Stores Verifier Accountant Generals Dept) and in attendance~ Major DF Smith~ Kenya Chief Fisheries Officer dnd Mr G Hamilton Kenya Fisheries Officer in Kisumu met in Kisumu in the middle of March 1960 Their report and recommendations were produced before the end of the month and will form the basis on which the Headquarters Unit will be closed downbull

HECOhDING WORK

14 Recording of catches at various ldndings around the Lake has been continued throughout the period In Tanganyikathe staffing position resulted in the closing down of several recording stations while in Kenya it was necessary to make some rearrangement in the location of stations those at Port Southby Wichlum and Usare being closed down and new stations being opened at Port Victoria llsembo and Kendu in addition to that at Nanga which was opened previously The result of this arrangement is more evenly distributed coverage of the Kenya waters clnd the elimination of stations which had either decreased in importance as landings or else were unnecessarily close to other established recording stations

15 Calculations based on two stations (Nanga and Kaloka) where regular weighing of catches bas been carried out during the calendar year 1959 show that the average price paidto the fishermen for all fish landed~ regardless of species~ was slightly over 54 cents per pound This corresponds to a value of pound61 - 5 per long ton

16 The total enumeration method of recording has been continued on the majority of stations throughout the period and the preparation and flow of monthly summaries to EA Fisheries Research Organization~ as arranged at the meeting in January 1959 which discussed recording methods ( se e paras 21 and 22 of the previous Annual Repor t) has been entirely satisfactory

FISHPONDS amp INTRODUCED TILj~IA IN L~KE VICTORIA

17 Only relatively small numbers of Tilapia have been supplied from the Nyanza Provincial Fishponds during the year as a result of the need to drain and dry out all pondsand subsequently to refill and restock them The object of this work is to enable the Department to hand them over to the Kenya Government with a minimum of mixed species in them Over a period of time there is invariably a gradual leakage of fish between ponds in spite of precautions to prevent it At the re~uest of the Kenya Government one pond when reshyfilled vvas stocked wi th Tilapia nigra for their future use in connection with monosex culture in fishponds in the Reserves

18 In considering the progress of introduced Tilapiapopulations in Lake Victoria the outstanding point of interest is the information scanty though it may be gained during the year about the growth of Tilapia nilotica the most recent non-indigenous species to be introduced A number of these fish have turned up several of them in the Fisheries Officers own nets at Kisumu and a few of them

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have been fish which were marked at the time of putting them into the Luke Two particularly noteworthy specimens were captured during October 1959 One was a marked fish measuring33 ems in length the other was unmarked and measured 345 ems The smaller fish bad been marked at a length of 11 ems when taken from one of the fishponds at Kisumu and placed in the Luke It had been free for only 16 months during which time it had grown at an average rate of n~arly

15 ems per month That in itself would have been a ~

t surprising growth rate to maintain from fingerling sizeto over 30 ems Even more-surprising was the fact revealed by an examinution of scales sent to EAFRa at Jinja thatIi this fish and the larger unmarked one had both apparentlyspawned three and possibly four times since release In the case of the four other species of Tilapia in the Lake the onset of maturity results in each case in a drastic redlw tion in growth rate

19 Although the first introduction of a new speciesiJ into waters where it does not exist naturally will often result in abnormal growth rates there seems to be no good

tt reason why natural physiological processes (such as the ~~ absorption of energy in gonad development instead of in

growth) should be radically altered by the new surroundingsbull ]urther in the case of Tilapianilotica every marked specimen recovered so far has shown the same remarkable and sustained growth The implication is that for some reasonWImiddot this species is capable of rapid growth as well as reproducshy tion under the conditions prevailing in the Kavirondo Gulf bull If further recoveries continue to confirm this state of)- affairs there is a good hope that the spread of the species ~y go far to rejuvenate the Gult fisheries over the next

I_i few years fgt

FISH NlIillKING iP -

- ~ 20 Work has continued throughout the period at Kisumuf and Entebbe With a$ usual the greatest number of fish marked at Kisumu The total numbers of Tilapia marked are shown below py stations

bull Kisumu bullbull 0 2894bull 0 bull

lSI Entebbe bull o 324 Mwanza bull ooo 10

21 In view of the encouraging results achieved in this work at lVIwanza during the preceding period it had been hoped that a substantial number of fish would have been marked this year However p~incipally as the result of ~

having insufficient men available to work the seine net it has proved impossible to maintain the work An ample stook

Q bull of marks is available should the position prove easier under the Tanganyika Government

el 22 In Kenya marking work was hindered during much of the year by an abnormally low Lake level and the presence of vast amounts of soft mUd which rendered seining operations

~ virtua+ly impossible

23 In Uganda difficulties exist as bas-been mentioned previously regarding the working of seines The Fisheries Officer has circumvented this trouble by the ingenious method of keeping a stock of small Tilapia in a large concrete water tank at an establishment adjacent to his office and marking and releasing them as opportunity permitted

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bull24 At Kisumu the overall return rate of fish marked

with plastic tags since the introduction of this type of tag I has risen to almost 13 but it must be borne in mind that I

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the great majority of fish returned come from within a radius of 5 miles from Kisumu and many of those from considerably closer From the small amount of information available on the subject it seems likely that marked fish ar~ in fact captured by fishermen in more distant areas but they cannot

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be bothered to bring them in and they appear io be unwilling- even to contact a Fish Guard in the area to report the capture Nevertheless it is felt that a considerable volume of useful information h~s been gathered from this project and a few of the salient points are summarised below

1 Growth Table s giving average monthly growth rates for marked fish are given at the end of this section These are based

~ on a total of nearly 750 fish of the five species of Tilupia now in Lake

W Victoria and may therefore be regarded 0 as reasonably accurate If it should

prove possible to keep up the annual

L

-f l~ adjustment of the growth rates given

I by inclusion of a fresh years returnsI

(J a further degree of accuracy-will no doubt be achieved by drawing the results

lt0 from a greater number of fish It is doubtful however whetner any marked differences in the present results are

el likely to emerge

pound Movement Where fish have been recaptured at 0- considerable distances from the place of

~ marking it has been found that the species so recovered have generally

~

been Tilapia esculenta and Tilapia varshyII

iabilis In general Tilapia zillii and T leucosticta have apparently tended tOo form ~uite local populations with minor spread in either direction from the point of sto eking oJ) few isolated

specimens have turned up at considerable distances from the place where they were

ilil marked but these appear to be exceptionS ~

3 Durabilit~ of marks One of the undesirable V eatures of the metal strap tags formerly

used was the strong probability that the mark vvould be los t in a comparatively f Short time The plastic tags have now been in use long enough to result in the

return of am any rate a few fish which have been free for long periods lmong these have been Tilapia variabilis free

for 886 and 640 days Tilapia zillii free for 603 days Tilapia leucosticta free for 886 803 716 715 635 625 and 610 days and Tilapia nilotica free for 614 and 596 days It has been found that in the case of fish marked at a length of more than some 20 ems the mark eventuully becomes entirely secure if the wire is passed through the base of the dorsal spines but the twisted end often remains projecting In the

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case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

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25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

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26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

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NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

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THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

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NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

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o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

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45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

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46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

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47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

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~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

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89 ll32 19858

35643

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SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

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Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

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383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

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i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

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Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

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Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

--

I

~

LAKE VICTORIA FISHERIES SERVICE ANNUAL REPORT - 195960bull GENERmiddotlL

~t

10 In view of the work involved in closing down the Department during the latter part of Maj and June and in view of the Chief Fisheries Officers departure on leave pending retirement on 22nd June 196Q in the Kenya itbull has been necessary to write this brief ~nnual Report to~r

cover the period from July 1959 up t~ the end of ~pril 1960 only 4~S is usual however the catch record summaries cover the full previous calendar year - in this case 1959- ~bull t

2 The legislation necessary to effect the disbandment

i of the Department was passed by the Central Legislative

4 ssembly in September 1959 and this combined with restricted financial prOVision resulted in the reduction of activities to an essential minimum Records of landings have been maintained at the various recording stations around the Lake a certain amount of fish marking has been carried out and the re-engining of the vessels and conshystruction of one of the two remaining powered dinghies for them has been completed as planned

3 The new Teleradio 5l radio eCluipment installed inf Heron and Darter has given excellent service throughout

the year as~has al~o the Redifon eguipment at Headguarters~t

4 The Departments motor vehicles have given continshyr uous and ~rouble-free sQrvice and are being handed over to the Territorial Governments in good running order

Igt 5 Considerable anxiety about the future was caused to 011 members of the staff by the protructed delay in the declaration of Territorial Government intentions regarding

c them At the time of writing the position is that ~ 1 Mr 4ltkinson has accepted a transfer to the Tanganyika

Government Mr Boundford has accepted a transfer to Ebull t~~j ~~~ ~griculture and F~s Research Organization Muguga J Wu Greenway and Mr Watson are understood unofficially to

be considering transfer to the Uganda and Kenya Governments respectively The Chief Fisheries Officer and I~ Briggs have as yet found no future employment

Ii 11 CENCING VvORKI

6 The following details of licences issued bave been supplied by the Fisheries Officers responsible for the three Territories and relate to the calendar year 1959

KENYJ

Fishermens Licences issued 4492 Fishing bGats registered bullbullbull 443 karuas 957 canoes

~J

UGi1NDAt

Fishermens licences issued bull No figures availableif Fishing canoes registered bullbullbull 1750 (1469 Buganda 214 Busoga t 67 J3ukedi)

Seine Net Permits issuedbullbull 45

Crocodile Hunting Permits issuedbull 8

~

~

bullf 2 bull

~ f

Ibulli

1

ff

~

~ )J

~ ~

bull ~ ~

Ii

bull

bull (

~

~

TANGlNYIKt~-Fishermens licences issued 763( (Estimated actnAl total

of fishArmen - J2OOO)Fishing canoes registered bullbullbullbull l835 ( Estimated actual totAJ

of canoes - 2200) Seine Net Permits issued bull 295 Crocodile Hunting Permits ~ssuedbullbull 60

MOTOR FISHING VESSELS amp DINGHIES

7 lVI V Darter the second vessel to be re-enginedWas completed late in~October 1959 and was returned to service at Entebbe where she has given no trouble Work was started on IVI V Pelican in January 1960 and she was completed bythe end of April 1~ t the time of writing she has run several hours of trials without any signs of trouble und can be considered fit for return to service This means that all three vessels have now been completely overhauled re-engined and returned to service without suffering from any instal shylational troubles consequent upon the fitting of the new engines This happy state of affairs reflects the greatest possible credit upon Mr Boundford the Maintenance Superinshytendent and his staff

8 Construction of an ll-foot dinghy in Permaply was completed in March 1960 and the craft was fitted with a small Coventry-Victor petrol engine and Hotchkiss cone propeller unit This dinghy proved satisfactory in trials and was accordingly handed over to the Fisheries Officer Entebbe and put into service with Darter

9 It had been intended to construct a similar dinghy for Pelican ll and indeed the timber plywood engine and prop~ller unit were all in stock for the job Unfortunately the quite sudden transfer of the Maintenance Superintendent to Muguga to take up a vacant post there precluded the possibility of constructing this second dinghy

FUTURE OF THE DOCKYARD amp WORKSHOP PiCILITIES IT KISUlvru

lO A proposal was worked out by the Provincial Commissioner Kisumu and the Chief Fisheries Officer for the continuance of the Departments dockyard facilities and workshop as a small private unde~taking Which would continue to employ the present Maintenance Superintendent Good progress had already been made in working out the details of this scheme when the Maintenance Superintendents transfer to Muguga took place The other interested party was reluctant to proceed vi th the matter on his own and the proj eet was therefore abandonedbull

ll With the very heavy commitments which the EARail shyways amp Harbours have at present maintenance and repair of the KenYa and Tanganyika Fishery vessels may present considshyerable problems after the disbandment of the Department

l2 As things now stand most of the movable assets of the Workshops will come up for sale with the Headquarters assets prior to closing down the proceeds being divided between the Territorial Governments

i bull

~ Ilt

~

l )

bull 3bull

13 A Board of Survey~ consisting of the 4~ccountant

General (Chairman) the Chief Fisheries Officer~ Mr Powell (Stores Verifier Accountant Generals Dept) and in attendance~ Major DF Smith~ Kenya Chief Fisheries Officer dnd Mr G Hamilton Kenya Fisheries Officer in Kisumu met in Kisumu in the middle of March 1960 Their report and recommendations were produced before the end of the month and will form the basis on which the Headquarters Unit will be closed downbull

HECOhDING WORK

14 Recording of catches at various ldndings around the Lake has been continued throughout the period In Tanganyikathe staffing position resulted in the closing down of several recording stations while in Kenya it was necessary to make some rearrangement in the location of stations those at Port Southby Wichlum and Usare being closed down and new stations being opened at Port Victoria llsembo and Kendu in addition to that at Nanga which was opened previously The result of this arrangement is more evenly distributed coverage of the Kenya waters clnd the elimination of stations which had either decreased in importance as landings or else were unnecessarily close to other established recording stations

15 Calculations based on two stations (Nanga and Kaloka) where regular weighing of catches bas been carried out during the calendar year 1959 show that the average price paidto the fishermen for all fish landed~ regardless of species~ was slightly over 54 cents per pound This corresponds to a value of pound61 - 5 per long ton

16 The total enumeration method of recording has been continued on the majority of stations throughout the period and the preparation and flow of monthly summaries to EA Fisheries Research Organization~ as arranged at the meeting in January 1959 which discussed recording methods ( se e paras 21 and 22 of the previous Annual Repor t) has been entirely satisfactory

FISHPONDS amp INTRODUCED TILj~IA IN L~KE VICTORIA

17 Only relatively small numbers of Tilapia have been supplied from the Nyanza Provincial Fishponds during the year as a result of the need to drain and dry out all pondsand subsequently to refill and restock them The object of this work is to enable the Department to hand them over to the Kenya Government with a minimum of mixed species in them Over a period of time there is invariably a gradual leakage of fish between ponds in spite of precautions to prevent it At the re~uest of the Kenya Government one pond when reshyfilled vvas stocked wi th Tilapia nigra for their future use in connection with monosex culture in fishponds in the Reserves

18 In considering the progress of introduced Tilapiapopulations in Lake Victoria the outstanding point of interest is the information scanty though it may be gained during the year about the growth of Tilapia nilotica the most recent non-indigenous species to be introduced A number of these fish have turned up several of them in the Fisheries Officers own nets at Kisumu and a few of them

iff

bullbull

bull 4middotbull

have been fish which were marked at the time of putting them into the Luke Two particularly noteworthy specimens were captured during October 1959 One was a marked fish measuring33 ems in length the other was unmarked and measured 345 ems The smaller fish bad been marked at a length of 11 ems when taken from one of the fishponds at Kisumu and placed in the Luke It had been free for only 16 months during which time it had grown at an average rate of n~arly

15 ems per month That in itself would have been a ~

t surprising growth rate to maintain from fingerling sizeto over 30 ems Even more-surprising was the fact revealed by an examinution of scales sent to EAFRa at Jinja thatIi this fish and the larger unmarked one had both apparentlyspawned three and possibly four times since release In the case of the four other species of Tilapia in the Lake the onset of maturity results in each case in a drastic redlw tion in growth rate

19 Although the first introduction of a new speciesiJ into waters where it does not exist naturally will often result in abnormal growth rates there seems to be no good

tt reason why natural physiological processes (such as the ~~ absorption of energy in gonad development instead of in

growth) should be radically altered by the new surroundingsbull ]urther in the case of Tilapianilotica every marked specimen recovered so far has shown the same remarkable and sustained growth The implication is that for some reasonWImiddot this species is capable of rapid growth as well as reproducshy tion under the conditions prevailing in the Kavirondo Gulf bull If further recoveries continue to confirm this state of)- affairs there is a good hope that the spread of the species ~y go far to rejuvenate the Gult fisheries over the next

I_i few years fgt

FISH NlIillKING iP -

- ~ 20 Work has continued throughout the period at Kisumuf and Entebbe With a$ usual the greatest number of fish marked at Kisumu The total numbers of Tilapia marked are shown below py stations

bull Kisumu bullbull 0 2894bull 0 bull

lSI Entebbe bull o 324 Mwanza bull ooo 10

21 In view of the encouraging results achieved in this work at lVIwanza during the preceding period it had been hoped that a substantial number of fish would have been marked this year However p~incipally as the result of ~

having insufficient men available to work the seine net it has proved impossible to maintain the work An ample stook

Q bull of marks is available should the position prove easier under the Tanganyika Government

el 22 In Kenya marking work was hindered during much of the year by an abnormally low Lake level and the presence of vast amounts of soft mUd which rendered seining operations

~ virtua+ly impossible

23 In Uganda difficulties exist as bas-been mentioned previously regarding the working of seines The Fisheries Officer has circumvented this trouble by the ingenious method of keeping a stock of small Tilapia in a large concrete water tank at an establishment adjacent to his office and marking and releasing them as opportunity permitted

tl I

I

- -

1

1 c 5 I

bull24 At Kisumu the overall return rate of fish marked

with plastic tags since the introduction of this type of tag I has risen to almost 13 but it must be borne in mind that I

)

the great majority of fish returned come from within a radius of 5 miles from Kisumu and many of those from considerably closer From the small amount of information available on the subject it seems likely that marked fish ar~ in fact captured by fishermen in more distant areas but they cannot

til ~

be bothered to bring them in and they appear io be unwilling- even to contact a Fish Guard in the area to report the capture Nevertheless it is felt that a considerable volume of useful information h~s been gathered from this project and a few of the salient points are summarised below

1 Growth Table s giving average monthly growth rates for marked fish are given at the end of this section These are based

~ on a total of nearly 750 fish of the five species of Tilupia now in Lake

W Victoria and may therefore be regarded 0 as reasonably accurate If it should

prove possible to keep up the annual

L

-f l~ adjustment of the growth rates given

I by inclusion of a fresh years returnsI

(J a further degree of accuracy-will no doubt be achieved by drawing the results

lt0 from a greater number of fish It is doubtful however whetner any marked differences in the present results are

el likely to emerge

pound Movement Where fish have been recaptured at 0- considerable distances from the place of

~ marking it has been found that the species so recovered have generally

~

been Tilapia esculenta and Tilapia varshyII

iabilis In general Tilapia zillii and T leucosticta have apparently tended tOo form ~uite local populations with minor spread in either direction from the point of sto eking oJ) few isolated

specimens have turned up at considerable distances from the place where they were

ilil marked but these appear to be exceptionS ~

3 Durabilit~ of marks One of the undesirable V eatures of the metal strap tags formerly

used was the strong probability that the mark vvould be los t in a comparatively f Short time The plastic tags have now been in use long enough to result in the

return of am any rate a few fish which have been free for long periods lmong these have been Tilapia variabilis free

for 886 and 640 days Tilapia zillii free for 603 days Tilapia leucosticta free for 886 803 716 715 635 625 and 610 days and Tilapia nilotica free for 614 and 596 days It has been found that in the case of fish marked at a length of more than some 20 ems the mark eventuully becomes entirely secure if the wire is passed through the base of the dorsal spines but the twisted end often remains projecting In the

~ ~ -II bull 6bull

case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

J

25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

~

ii ~ shy

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

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~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

bullf 2 bull

~ f

Ibulli

1

ff

~

~ )J

~ ~

bull ~ ~

Ii

bull

bull (

~

~

TANGlNYIKt~-Fishermens licences issued 763( (Estimated actnAl total

of fishArmen - J2OOO)Fishing canoes registered bullbullbullbull l835 ( Estimated actual totAJ

of canoes - 2200) Seine Net Permits issued bull 295 Crocodile Hunting Permits ~ssuedbullbull 60

MOTOR FISHING VESSELS amp DINGHIES

7 lVI V Darter the second vessel to be re-enginedWas completed late in~October 1959 and was returned to service at Entebbe where she has given no trouble Work was started on IVI V Pelican in January 1960 and she was completed bythe end of April 1~ t the time of writing she has run several hours of trials without any signs of trouble und can be considered fit for return to service This means that all three vessels have now been completely overhauled re-engined and returned to service without suffering from any instal shylational troubles consequent upon the fitting of the new engines This happy state of affairs reflects the greatest possible credit upon Mr Boundford the Maintenance Superinshytendent and his staff

8 Construction of an ll-foot dinghy in Permaply was completed in March 1960 and the craft was fitted with a small Coventry-Victor petrol engine and Hotchkiss cone propeller unit This dinghy proved satisfactory in trials and was accordingly handed over to the Fisheries Officer Entebbe and put into service with Darter

9 It had been intended to construct a similar dinghy for Pelican ll and indeed the timber plywood engine and prop~ller unit were all in stock for the job Unfortunately the quite sudden transfer of the Maintenance Superintendent to Muguga to take up a vacant post there precluded the possibility of constructing this second dinghy

FUTURE OF THE DOCKYARD amp WORKSHOP PiCILITIES IT KISUlvru

lO A proposal was worked out by the Provincial Commissioner Kisumu and the Chief Fisheries Officer for the continuance of the Departments dockyard facilities and workshop as a small private unde~taking Which would continue to employ the present Maintenance Superintendent Good progress had already been made in working out the details of this scheme when the Maintenance Superintendents transfer to Muguga took place The other interested party was reluctant to proceed vi th the matter on his own and the proj eet was therefore abandonedbull

ll With the very heavy commitments which the EARail shyways amp Harbours have at present maintenance and repair of the KenYa and Tanganyika Fishery vessels may present considshyerable problems after the disbandment of the Department

l2 As things now stand most of the movable assets of the Workshops will come up for sale with the Headquarters assets prior to closing down the proceeds being divided between the Territorial Governments

i bull

~ Ilt

~

l )

bull 3bull

13 A Board of Survey~ consisting of the 4~ccountant

General (Chairman) the Chief Fisheries Officer~ Mr Powell (Stores Verifier Accountant Generals Dept) and in attendance~ Major DF Smith~ Kenya Chief Fisheries Officer dnd Mr G Hamilton Kenya Fisheries Officer in Kisumu met in Kisumu in the middle of March 1960 Their report and recommendations were produced before the end of the month and will form the basis on which the Headquarters Unit will be closed downbull

HECOhDING WORK

14 Recording of catches at various ldndings around the Lake has been continued throughout the period In Tanganyikathe staffing position resulted in the closing down of several recording stations while in Kenya it was necessary to make some rearrangement in the location of stations those at Port Southby Wichlum and Usare being closed down and new stations being opened at Port Victoria llsembo and Kendu in addition to that at Nanga which was opened previously The result of this arrangement is more evenly distributed coverage of the Kenya waters clnd the elimination of stations which had either decreased in importance as landings or else were unnecessarily close to other established recording stations

15 Calculations based on two stations (Nanga and Kaloka) where regular weighing of catches bas been carried out during the calendar year 1959 show that the average price paidto the fishermen for all fish landed~ regardless of species~ was slightly over 54 cents per pound This corresponds to a value of pound61 - 5 per long ton

16 The total enumeration method of recording has been continued on the majority of stations throughout the period and the preparation and flow of monthly summaries to EA Fisheries Research Organization~ as arranged at the meeting in January 1959 which discussed recording methods ( se e paras 21 and 22 of the previous Annual Repor t) has been entirely satisfactory

FISHPONDS amp INTRODUCED TILj~IA IN L~KE VICTORIA

17 Only relatively small numbers of Tilapia have been supplied from the Nyanza Provincial Fishponds during the year as a result of the need to drain and dry out all pondsand subsequently to refill and restock them The object of this work is to enable the Department to hand them over to the Kenya Government with a minimum of mixed species in them Over a period of time there is invariably a gradual leakage of fish between ponds in spite of precautions to prevent it At the re~uest of the Kenya Government one pond when reshyfilled vvas stocked wi th Tilapia nigra for their future use in connection with monosex culture in fishponds in the Reserves

18 In considering the progress of introduced Tilapiapopulations in Lake Victoria the outstanding point of interest is the information scanty though it may be gained during the year about the growth of Tilapia nilotica the most recent non-indigenous species to be introduced A number of these fish have turned up several of them in the Fisheries Officers own nets at Kisumu and a few of them

iff

bullbull

bull 4middotbull

have been fish which were marked at the time of putting them into the Luke Two particularly noteworthy specimens were captured during October 1959 One was a marked fish measuring33 ems in length the other was unmarked and measured 345 ems The smaller fish bad been marked at a length of 11 ems when taken from one of the fishponds at Kisumu and placed in the Luke It had been free for only 16 months during which time it had grown at an average rate of n~arly

15 ems per month That in itself would have been a ~

t surprising growth rate to maintain from fingerling sizeto over 30 ems Even more-surprising was the fact revealed by an examinution of scales sent to EAFRa at Jinja thatIi this fish and the larger unmarked one had both apparentlyspawned three and possibly four times since release In the case of the four other species of Tilapia in the Lake the onset of maturity results in each case in a drastic redlw tion in growth rate

19 Although the first introduction of a new speciesiJ into waters where it does not exist naturally will often result in abnormal growth rates there seems to be no good

tt reason why natural physiological processes (such as the ~~ absorption of energy in gonad development instead of in

growth) should be radically altered by the new surroundingsbull ]urther in the case of Tilapianilotica every marked specimen recovered so far has shown the same remarkable and sustained growth The implication is that for some reasonWImiddot this species is capable of rapid growth as well as reproducshy tion under the conditions prevailing in the Kavirondo Gulf bull If further recoveries continue to confirm this state of)- affairs there is a good hope that the spread of the species ~y go far to rejuvenate the Gult fisheries over the next

I_i few years fgt

FISH NlIillKING iP -

- ~ 20 Work has continued throughout the period at Kisumuf and Entebbe With a$ usual the greatest number of fish marked at Kisumu The total numbers of Tilapia marked are shown below py stations

bull Kisumu bullbull 0 2894bull 0 bull

lSI Entebbe bull o 324 Mwanza bull ooo 10

21 In view of the encouraging results achieved in this work at lVIwanza during the preceding period it had been hoped that a substantial number of fish would have been marked this year However p~incipally as the result of ~

having insufficient men available to work the seine net it has proved impossible to maintain the work An ample stook

Q bull of marks is available should the position prove easier under the Tanganyika Government

el 22 In Kenya marking work was hindered during much of the year by an abnormally low Lake level and the presence of vast amounts of soft mUd which rendered seining operations

~ virtua+ly impossible

23 In Uganda difficulties exist as bas-been mentioned previously regarding the working of seines The Fisheries Officer has circumvented this trouble by the ingenious method of keeping a stock of small Tilapia in a large concrete water tank at an establishment adjacent to his office and marking and releasing them as opportunity permitted

tl I

I

- -

1

1 c 5 I

bull24 At Kisumu the overall return rate of fish marked

with plastic tags since the introduction of this type of tag I has risen to almost 13 but it must be borne in mind that I

)

the great majority of fish returned come from within a radius of 5 miles from Kisumu and many of those from considerably closer From the small amount of information available on the subject it seems likely that marked fish ar~ in fact captured by fishermen in more distant areas but they cannot

til ~

be bothered to bring them in and they appear io be unwilling- even to contact a Fish Guard in the area to report the capture Nevertheless it is felt that a considerable volume of useful information h~s been gathered from this project and a few of the salient points are summarised below

1 Growth Table s giving average monthly growth rates for marked fish are given at the end of this section These are based

~ on a total of nearly 750 fish of the five species of Tilupia now in Lake

W Victoria and may therefore be regarded 0 as reasonably accurate If it should

prove possible to keep up the annual

L

-f l~ adjustment of the growth rates given

I by inclusion of a fresh years returnsI

(J a further degree of accuracy-will no doubt be achieved by drawing the results

lt0 from a greater number of fish It is doubtful however whetner any marked differences in the present results are

el likely to emerge

pound Movement Where fish have been recaptured at 0- considerable distances from the place of

~ marking it has been found that the species so recovered have generally

~

been Tilapia esculenta and Tilapia varshyII

iabilis In general Tilapia zillii and T leucosticta have apparently tended tOo form ~uite local populations with minor spread in either direction from the point of sto eking oJ) few isolated

specimens have turned up at considerable distances from the place where they were

ilil marked but these appear to be exceptionS ~

3 Durabilit~ of marks One of the undesirable V eatures of the metal strap tags formerly

used was the strong probability that the mark vvould be los t in a comparatively f Short time The plastic tags have now been in use long enough to result in the

return of am any rate a few fish which have been free for long periods lmong these have been Tilapia variabilis free

for 886 and 640 days Tilapia zillii free for 603 days Tilapia leucosticta free for 886 803 716 715 635 625 and 610 days and Tilapia nilotica free for 614 and 596 days It has been found that in the case of fish marked at a length of more than some 20 ems the mark eventuully becomes entirely secure if the wire is passed through the base of the dorsal spines but the twisted end often remains projecting In the

~ ~ -II bull 6bull

case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

J

25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

~

ii ~ shy

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

i bull

~ Ilt

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bull 3bull

13 A Board of Survey~ consisting of the 4~ccountant

General (Chairman) the Chief Fisheries Officer~ Mr Powell (Stores Verifier Accountant Generals Dept) and in attendance~ Major DF Smith~ Kenya Chief Fisheries Officer dnd Mr G Hamilton Kenya Fisheries Officer in Kisumu met in Kisumu in the middle of March 1960 Their report and recommendations were produced before the end of the month and will form the basis on which the Headquarters Unit will be closed downbull

HECOhDING WORK

14 Recording of catches at various ldndings around the Lake has been continued throughout the period In Tanganyikathe staffing position resulted in the closing down of several recording stations while in Kenya it was necessary to make some rearrangement in the location of stations those at Port Southby Wichlum and Usare being closed down and new stations being opened at Port Victoria llsembo and Kendu in addition to that at Nanga which was opened previously The result of this arrangement is more evenly distributed coverage of the Kenya waters clnd the elimination of stations which had either decreased in importance as landings or else were unnecessarily close to other established recording stations

15 Calculations based on two stations (Nanga and Kaloka) where regular weighing of catches bas been carried out during the calendar year 1959 show that the average price paidto the fishermen for all fish landed~ regardless of species~ was slightly over 54 cents per pound This corresponds to a value of pound61 - 5 per long ton

16 The total enumeration method of recording has been continued on the majority of stations throughout the period and the preparation and flow of monthly summaries to EA Fisheries Research Organization~ as arranged at the meeting in January 1959 which discussed recording methods ( se e paras 21 and 22 of the previous Annual Repor t) has been entirely satisfactory

FISHPONDS amp INTRODUCED TILj~IA IN L~KE VICTORIA

17 Only relatively small numbers of Tilapia have been supplied from the Nyanza Provincial Fishponds during the year as a result of the need to drain and dry out all pondsand subsequently to refill and restock them The object of this work is to enable the Department to hand them over to the Kenya Government with a minimum of mixed species in them Over a period of time there is invariably a gradual leakage of fish between ponds in spite of precautions to prevent it At the re~uest of the Kenya Government one pond when reshyfilled vvas stocked wi th Tilapia nigra for their future use in connection with monosex culture in fishponds in the Reserves

18 In considering the progress of introduced Tilapiapopulations in Lake Victoria the outstanding point of interest is the information scanty though it may be gained during the year about the growth of Tilapia nilotica the most recent non-indigenous species to be introduced A number of these fish have turned up several of them in the Fisheries Officers own nets at Kisumu and a few of them

iff

bullbull

bull 4middotbull

have been fish which were marked at the time of putting them into the Luke Two particularly noteworthy specimens were captured during October 1959 One was a marked fish measuring33 ems in length the other was unmarked and measured 345 ems The smaller fish bad been marked at a length of 11 ems when taken from one of the fishponds at Kisumu and placed in the Luke It had been free for only 16 months during which time it had grown at an average rate of n~arly

15 ems per month That in itself would have been a ~

t surprising growth rate to maintain from fingerling sizeto over 30 ems Even more-surprising was the fact revealed by an examinution of scales sent to EAFRa at Jinja thatIi this fish and the larger unmarked one had both apparentlyspawned three and possibly four times since release In the case of the four other species of Tilapia in the Lake the onset of maturity results in each case in a drastic redlw tion in growth rate

19 Although the first introduction of a new speciesiJ into waters where it does not exist naturally will often result in abnormal growth rates there seems to be no good

tt reason why natural physiological processes (such as the ~~ absorption of energy in gonad development instead of in

growth) should be radically altered by the new surroundingsbull ]urther in the case of Tilapianilotica every marked specimen recovered so far has shown the same remarkable and sustained growth The implication is that for some reasonWImiddot this species is capable of rapid growth as well as reproducshy tion under the conditions prevailing in the Kavirondo Gulf bull If further recoveries continue to confirm this state of)- affairs there is a good hope that the spread of the species ~y go far to rejuvenate the Gult fisheries over the next

I_i few years fgt

FISH NlIillKING iP -

- ~ 20 Work has continued throughout the period at Kisumuf and Entebbe With a$ usual the greatest number of fish marked at Kisumu The total numbers of Tilapia marked are shown below py stations

bull Kisumu bullbull 0 2894bull 0 bull

lSI Entebbe bull o 324 Mwanza bull ooo 10

21 In view of the encouraging results achieved in this work at lVIwanza during the preceding period it had been hoped that a substantial number of fish would have been marked this year However p~incipally as the result of ~

having insufficient men available to work the seine net it has proved impossible to maintain the work An ample stook

Q bull of marks is available should the position prove easier under the Tanganyika Government

el 22 In Kenya marking work was hindered during much of the year by an abnormally low Lake level and the presence of vast amounts of soft mUd which rendered seining operations

~ virtua+ly impossible

23 In Uganda difficulties exist as bas-been mentioned previously regarding the working of seines The Fisheries Officer has circumvented this trouble by the ingenious method of keeping a stock of small Tilapia in a large concrete water tank at an establishment adjacent to his office and marking and releasing them as opportunity permitted

tl I

I

- -

1

1 c 5 I

bull24 At Kisumu the overall return rate of fish marked

with plastic tags since the introduction of this type of tag I has risen to almost 13 but it must be borne in mind that I

)

the great majority of fish returned come from within a radius of 5 miles from Kisumu and many of those from considerably closer From the small amount of information available on the subject it seems likely that marked fish ar~ in fact captured by fishermen in more distant areas but they cannot

til ~

be bothered to bring them in and they appear io be unwilling- even to contact a Fish Guard in the area to report the capture Nevertheless it is felt that a considerable volume of useful information h~s been gathered from this project and a few of the salient points are summarised below

1 Growth Table s giving average monthly growth rates for marked fish are given at the end of this section These are based

~ on a total of nearly 750 fish of the five species of Tilupia now in Lake

W Victoria and may therefore be regarded 0 as reasonably accurate If it should

prove possible to keep up the annual

L

-f l~ adjustment of the growth rates given

I by inclusion of a fresh years returnsI

(J a further degree of accuracy-will no doubt be achieved by drawing the results

lt0 from a greater number of fish It is doubtful however whetner any marked differences in the present results are

el likely to emerge

pound Movement Where fish have been recaptured at 0- considerable distances from the place of

~ marking it has been found that the species so recovered have generally

~

been Tilapia esculenta and Tilapia varshyII

iabilis In general Tilapia zillii and T leucosticta have apparently tended tOo form ~uite local populations with minor spread in either direction from the point of sto eking oJ) few isolated

specimens have turned up at considerable distances from the place where they were

ilil marked but these appear to be exceptionS ~

3 Durabilit~ of marks One of the undesirable V eatures of the metal strap tags formerly

used was the strong probability that the mark vvould be los t in a comparatively f Short time The plastic tags have now been in use long enough to result in the

return of am any rate a few fish which have been free for long periods lmong these have been Tilapia variabilis free

for 886 and 640 days Tilapia zillii free for 603 days Tilapia leucosticta free for 886 803 716 715 635 625 and 610 days and Tilapia nilotica free for 614 and 596 days It has been found that in the case of fish marked at a length of more than some 20 ems the mark eventuully becomes entirely secure if the wire is passed through the base of the dorsal spines but the twisted end often remains projecting In the

~ ~ -II bull 6bull

case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

J

25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

~

ii ~ shy

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

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~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

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(~

bull ti pound)

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~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

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SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

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-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

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SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

bullbull

bull 4middotbull

have been fish which were marked at the time of putting them into the Luke Two particularly noteworthy specimens were captured during October 1959 One was a marked fish measuring33 ems in length the other was unmarked and measured 345 ems The smaller fish bad been marked at a length of 11 ems when taken from one of the fishponds at Kisumu and placed in the Luke It had been free for only 16 months during which time it had grown at an average rate of n~arly

15 ems per month That in itself would have been a ~

t surprising growth rate to maintain from fingerling sizeto over 30 ems Even more-surprising was the fact revealed by an examinution of scales sent to EAFRa at Jinja thatIi this fish and the larger unmarked one had both apparentlyspawned three and possibly four times since release In the case of the four other species of Tilapia in the Lake the onset of maturity results in each case in a drastic redlw tion in growth rate

19 Although the first introduction of a new speciesiJ into waters where it does not exist naturally will often result in abnormal growth rates there seems to be no good

tt reason why natural physiological processes (such as the ~~ absorption of energy in gonad development instead of in

growth) should be radically altered by the new surroundingsbull ]urther in the case of Tilapianilotica every marked specimen recovered so far has shown the same remarkable and sustained growth The implication is that for some reasonWImiddot this species is capable of rapid growth as well as reproducshy tion under the conditions prevailing in the Kavirondo Gulf bull If further recoveries continue to confirm this state of)- affairs there is a good hope that the spread of the species ~y go far to rejuvenate the Gult fisheries over the next

I_i few years fgt

FISH NlIillKING iP -

- ~ 20 Work has continued throughout the period at Kisumuf and Entebbe With a$ usual the greatest number of fish marked at Kisumu The total numbers of Tilapia marked are shown below py stations

bull Kisumu bullbull 0 2894bull 0 bull

lSI Entebbe bull o 324 Mwanza bull ooo 10

21 In view of the encouraging results achieved in this work at lVIwanza during the preceding period it had been hoped that a substantial number of fish would have been marked this year However p~incipally as the result of ~

having insufficient men available to work the seine net it has proved impossible to maintain the work An ample stook

Q bull of marks is available should the position prove easier under the Tanganyika Government

el 22 In Kenya marking work was hindered during much of the year by an abnormally low Lake level and the presence of vast amounts of soft mUd which rendered seining operations

~ virtua+ly impossible

23 In Uganda difficulties exist as bas-been mentioned previously regarding the working of seines The Fisheries Officer has circumvented this trouble by the ingenious method of keeping a stock of small Tilapia in a large concrete water tank at an establishment adjacent to his office and marking and releasing them as opportunity permitted

tl I

I

- -

1

1 c 5 I

bull24 At Kisumu the overall return rate of fish marked

with plastic tags since the introduction of this type of tag I has risen to almost 13 but it must be borne in mind that I

)

the great majority of fish returned come from within a radius of 5 miles from Kisumu and many of those from considerably closer From the small amount of information available on the subject it seems likely that marked fish ar~ in fact captured by fishermen in more distant areas but they cannot

til ~

be bothered to bring them in and they appear io be unwilling- even to contact a Fish Guard in the area to report the capture Nevertheless it is felt that a considerable volume of useful information h~s been gathered from this project and a few of the salient points are summarised below

1 Growth Table s giving average monthly growth rates for marked fish are given at the end of this section These are based

~ on a total of nearly 750 fish of the five species of Tilupia now in Lake

W Victoria and may therefore be regarded 0 as reasonably accurate If it should

prove possible to keep up the annual

L

-f l~ adjustment of the growth rates given

I by inclusion of a fresh years returnsI

(J a further degree of accuracy-will no doubt be achieved by drawing the results

lt0 from a greater number of fish It is doubtful however whetner any marked differences in the present results are

el likely to emerge

pound Movement Where fish have been recaptured at 0- considerable distances from the place of

~ marking it has been found that the species so recovered have generally

~

been Tilapia esculenta and Tilapia varshyII

iabilis In general Tilapia zillii and T leucosticta have apparently tended tOo form ~uite local populations with minor spread in either direction from the point of sto eking oJ) few isolated

specimens have turned up at considerable distances from the place where they were

ilil marked but these appear to be exceptionS ~

3 Durabilit~ of marks One of the undesirable V eatures of the metal strap tags formerly

used was the strong probability that the mark vvould be los t in a comparatively f Short time The plastic tags have now been in use long enough to result in the

return of am any rate a few fish which have been free for long periods lmong these have been Tilapia variabilis free

for 886 and 640 days Tilapia zillii free for 603 days Tilapia leucosticta free for 886 803 716 715 635 625 and 610 days and Tilapia nilotica free for 614 and 596 days It has been found that in the case of fish marked at a length of more than some 20 ems the mark eventuully becomes entirely secure if the wire is passed through the base of the dorsal spines but the twisted end often remains projecting In the

~ ~ -II bull 6bull

case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

J

25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

~

ii ~ shy

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

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(~

bull ti pound)

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shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

I

- -

1

1 c 5 I

bull24 At Kisumu the overall return rate of fish marked

with plastic tags since the introduction of this type of tag I has risen to almost 13 but it must be borne in mind that I

)

the great majority of fish returned come from within a radius of 5 miles from Kisumu and many of those from considerably closer From the small amount of information available on the subject it seems likely that marked fish ar~ in fact captured by fishermen in more distant areas but they cannot

til ~

be bothered to bring them in and they appear io be unwilling- even to contact a Fish Guard in the area to report the capture Nevertheless it is felt that a considerable volume of useful information h~s been gathered from this project and a few of the salient points are summarised below

1 Growth Table s giving average monthly growth rates for marked fish are given at the end of this section These are based

~ on a total of nearly 750 fish of the five species of Tilupia now in Lake

W Victoria and may therefore be regarded 0 as reasonably accurate If it should

prove possible to keep up the annual

L

-f l~ adjustment of the growth rates given

I by inclusion of a fresh years returnsI

(J a further degree of accuracy-will no doubt be achieved by drawing the results

lt0 from a greater number of fish It is doubtful however whetner any marked differences in the present results are

el likely to emerge

pound Movement Where fish have been recaptured at 0- considerable distances from the place of

~ marking it has been found that the species so recovered have generally

~

been Tilapia esculenta and Tilapia varshyII

iabilis In general Tilapia zillii and T leucosticta have apparently tended tOo form ~uite local populations with minor spread in either direction from the point of sto eking oJ) few isolated

specimens have turned up at considerable distances from the place where they were

ilil marked but these appear to be exceptionS ~

3 Durabilit~ of marks One of the undesirable V eatures of the metal strap tags formerly

used was the strong probability that the mark vvould be los t in a comparatively f Short time The plastic tags have now been in use long enough to result in the

return of am any rate a few fish which have been free for long periods lmong these have been Tilapia variabilis free

for 886 and 640 days Tilapia zillii free for 603 days Tilapia leucosticta free for 886 803 716 715 635 625 and 610 days and Tilapia nilotica free for 614 and 596 days It has been found that in the case of fish marked at a length of more than some 20 ems the mark eventuully becomes entirely secure if the wire is passed through the base of the dorsal spines but the twisted end often remains projecting In the

~ ~ -II bull 6bull

case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

J

25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

~

ii ~ shy

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

~ ~ -II bull 6bull

case of fish marked in the low teens of ems length in most cases recovery after the fish has grown to more than 20 ems in length shows that the mark becomes part of the fish The twisted end of the wire becomes completely overgrown by tissue and only the mark and a short length of wire can be seen projecting from the side of the back

bull 4 Survival of small fi~ Several fish illarke~

at a size of 10 ems or less have been returned and in some cases have shown

~r substantial 6rowth in a comparatively short time indicating that their development has been unaffected by the attachment of the mark Examples are Tilapia leucosticta (i) of 95 ems which had grown 115 ems in the course of 2~0 days (ii) of 8 ems which grew 150 ems in 396days and (iii) of 925 ems which grew 1825 ems bull in 716 days and Tilapia nilotica of 725 ems and 100 ems which grew 1225 ems in 267 days and 875 ems in 191 daysrespectively

J

25 Growth rates The growth rate tables given in para ~ 46 of the preVious l~nnual Repo~t have again been extended in

coverage by the grafting on to them of results obtained from examination of a further 270 fish returned to the Kisumu

bull office The conditions governing inclusion in the tables remain unaltered These tables are now based on a total of 763 fish which have been examined

it GROWTH RJ~TE TABLES BASED ON RECORDED GROWTH OF MXRKED FISH IN KENYA dATERS

----~-_ shy~

I Length VJhen No of Total growth Total days

marked fish recorded free Cms-to- Cms

- TlLiUIA ESCULENTA ~

5+ 10 Nil 10+ 15 7 3875 1945 060

fI 15+ 20 7 1125 1130 030 20+ 25 34 (+) 55middot0 8724 019 25+ 30 106(++) 8925 28325 010 30+ 35 8 575 1907 010

shyTILAPIA VRIiU3ILIS -~

5+ 10 Nil 10+ 15 6 1025 643 050

O 15+ 20 30 5825 034

20+ 25 105 900 2351~ 011 25+ 30 73 405 ll36~ 011

- ~ TILiPIA ZILLII

5+ 10 2 1575 447 106 10+ 15 20 6025 1890 096 15+ 20 17 510 2549 060 20+ 25 37 3105 3882 024 25+ 30 13 115 2270 015 30+ 35 1 Nil 116 Nil

(+) - includes 2 old-type marks returned after long period (++) - includes 11 old-type marks returned after long periods

~

ii ~ shy

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

bull bull

26~ Once aeair the difere~~ial grcwth rt3p of various fish of tho same species have been ery eVident arid a few exam~les are worth quoting~

(i) ~ilaJia vapoundiabil~_s In the case of two fish b~h marked at 225 cms oneshowed growth of 225 cmso after middot102 days while the other showed 05 cm~~ g~owth after 344 days

(ii) Tilapia leucosticta In the case of two fish bOGhmE~rled atlj75 cms~ one grew 11 25 cms in 396 days whj~_e the other grew only 900 cms in 625 d~ys In the case of two fish both marked at 190 cms one grew 925 cms in 319 days while the other grew only 5Q75 cms~

~ in 886 de-yst)

b (iii) CuriousJ_y enough the small number of Tilapia nilotica ~eturned (which were all marked at lengths of less than 12 cms) showed no differ8ntial growth although in each cas~

growth was both rapid and substantialbull

bull 27 Adjustment of the reward payable for the return of fish marks without the fish and for fish from the immedibte

vicir-i ty of Kisumu had to be made early in 1960 It was f-ound that bands of professional scavengers mostly children - were scol1Xihgthe shores near the office for marked fish which had suocumbed to the shock of marking Others were making regular visits to local fish eagles nests Where they reapei-arich harvest of marks for little effort It was considered tha~j the value of these returns was negligible and the amount of the reward payable was reduced

accordingly

~ ~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

v

8G

NOTES FROM TAN~~NtIKj~

INTRODUCED TILj~I~

28 Evidence obtained over the period indicates that early stockings of non-indigenous Tilapia have spread at a rate which can only be described as astonishing Recorded captures since June 1959 total 1114 fish made up of 10ogshyTilapia zillii 87 Tilapia nilotica and 19 Tilapia leucosshytl ticta Tilapia leucosticta have been taken at Bukoba and at the office beach together with Tilapia nilotica but the fish of these species have so far all been fairly small

A Tilapia zillii hava appeared over a very wide range indeed in a number of cuses in fair numbers in commercial catches Their size has ranged from fingerlings in seines to fish of over 30 ems in gill nets and their distribution has been listed as follows

(i) Northwards from Musoma as far asShirati and southwards as far as Majitao

~ (ii) From Mwanza throughout the Mwanza Gulf and Smith Sound area and eastwards along the) south shore of the Speke Gulf to the Nyanghumbi area naar the head of the Gulf

(iii) In the Bukoba area R

29 In the case of (i) and (ii) above the stocks are undoubtedly derived from stockings made at various

l points over the past five years The origin of the Bukoba fish however remains a mystery as no stockings have beenmade in that area by theDepartment It is assumed

11 that they represent a southward spreadof a population Q known to exist in the Busungwe Island area at the Kagera

River mouth in 1958 The distance from the Kagera to bull bull Bukoba ~ong the coastline is less than 30 miles bull9

30 It is highly probable that this species is already establi~h~d in other areas adjacent to those mentioned but as yet definite evidence is lacking

31 Stocking work has continued throughout the period and a total of 9000 Tilapia zillii 2200 Tilapia leucostict~

o and 4100 Tilapia nilotica have been placed in the Lake in the Mwanza Gulf area In addition some 9000 indigenous Tilapia were stocked these la~ter together with about

shy30 of the non-indigenous fish came from the ponds at Butimba Prison near Mwanza~ The Department is deeply indebted to the Superintendent for his generous and frequent help in this and other work

p 32 This total figure of over 24000 fingerlings stocked in the course of the year is an encouraging indication of what can be achieved with even small facilities

_- ~ if the pond scheme should be Widely extended in the future-Isect this figure could be multiplied many times over to the direct benefit of the fisheries generally

~~_

~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

--

9bull bull

THE FI SHERIES OF MWilN ZA GULF

33 The need to close the recording station at Nyamwikamuru in Bukumbi on account of staff shortage removed the one source of first-hand information about these fisheries which the Department had in the area Nevertheless records maintained at Mwanza South still show the trends in the vicinity The principal features of the period have been slight increase in the use of 4t

r~ nets though with a decrease in the catch per net figure~

for Tilapia a sharp decrease in the use of 2t nets with a corresponding drop in catches and a sudden upsurge of

Ii enthusiasm for long-line fishing the catch being mainly Protopterus

34 JUthough 1959 generally was a poor year for fishing it will be necessary to keep a careful watch on this important fishing area dS in the case of the Kavirondo Gulf the solution to a declirJng fishery may

bull well lie in extensive stockingbull

NETS

35 The value of net sales in Mwanza fell by pound19000 during the calendar year 1959 to a total figure of pound146049middot

~) Sales of 4t and 2t mesh gill nets fell by about 50 during the year wtlile sales 02 very small mesh gill nets (l - 2 mesh) increased by roughly 900 as compared with 1955 l has been mentioned elsewhere 1959 was a bad year generally for fishing and it seems probable that greater

bull attention was being paid to the Haplochromis and Uestes fishery than is normal The Fisheries Officer considers that if conditions through 1960 are more normal as regards

IE rainfall the types of net in use will revert to the usual 5 4t and 2c~ in the customary numbers

OUTPUT OF FISH IN LdKE PROVINCE

36 An estimnte of output prepared on the same lines as for 1958 shows an increase in the total figure of some 5000 tons to 3l302 tons The Fisheries Officer in commenting on his figures remarks that Tilapia esculenta

Ii formerly the priLcipal constituent of the catch has noW dropped to fourth place by weight coming after Bagrus (l2420 tons) Haplochromis (42l9 tons) and Synodontis~

(265l tons) with a total of only 257lto~so This remarkable decline is evident in the poor catches obtained in what are normally some of the be st Tilapia areas on the othermiddotmiddot hand the Fisheries Officer states there have been exceptionally large concentrations of fishermen in many of the offshore islands from which the Bagrus fishery is normally prosecuted and this stat8 of affairs has resulted in the remarkable catch of this species during the year

FISH S~lLES IN lBE 1lLilliKETS OF Mv~ J~ZA DISTRICT

bull ~1 37 Market records cover OlUY three species and are not under the direct control of the Fisheries Officer These species are Tilapia Labeo and Schilbe The generally poor results obtained in the fisheries during 1959 are reflected in the drop of nearly 200000 fish handled in the markets and the fall in t~e total value from pound30627 in 1958 to pound2l4l2 The Fisheries Officer considers that if full records were available from markets for all species sold the rise in the Bagrus catch would fully compensate for the fall in the above three species

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

II

i

~

bull lO bull

NOTES FROM KENYA

FISHERIES CONTROL

38 During the first four months of 1960 the Fisheries Officer was without his boat which was being re-engined and

~ overhauled With the exceptionally heavy and protracted rains which have continued almost v~i thout a break during the same period there has been no ~uestion of undertaking

bull control operations by land except for a few local raidw as even the Land Rover would have been unable to penetrate -l

to the areas where illegal fishing is rife It ~s probable t~erefore that there will be a sharp recrudescence of the problem during the remainder of 1960 as a result of lack of repressive measures during the early part of the year bull

bull 39 ~s a result of operations during the last si~

months of 1959 a total of 148 seine nets 19 mos~uito nett seines and 27 prisoners were captured Nearly a quarter of the seine nets and half the prisoners were the result

~ of operations by a General Service Unit platoon which spent some time in the Kisumu area bullr -

40 Fines imposed as a result of cases brought against

prisoners totalled 6 LOO~ bull

r 41 There was only one case involving the use of prohibi ted gill nets in this instance 4~-1I mesh net$

NET]( 42 Increasing interest is being taken by fishermen

2 111 in the use of very small mesh gill nets (113 11 - mesh) bull oj

These are becoming increasingly popular for~the Qapture~

of Haplochromis and ~Uestes and in this respect the fishershy men are folloWing the example set by their fell01lvs in Uganda

~

l and Tanganyika The use of these nets in Kenya waters was made legal by the Chief Fisheries Officer at the end of 1957 but interest in their use has been slow to develop

43- At the other end of the scale a fisherman at 6 11

Itgt Jlsembo has started using gill nets of and 8 11 mesh for bull k the capture of Bagrus and Protopterus ~Whi~e ~o records ~

y are available of the results which he has achieved it is ~l understood that he has been getting satisfactory catches ofi

as might be expected unusually large fish The Fisheries ~

Officer reports that doalers are being presued to obtain stocks of these nets indicating interest by other fishermen

LEGISLATION

44 A High Court ruling at the beginning of September ~ ~ 1959 made it clear that certain aspects of the existing

Control of Nets (Nyanza Province) Ordinance 1958 and an ~

amended Schedule of Prohibited Nets issued under it vvere 0 ( faulty legally A subsequent meeting with the Kenya Governshy

ments Legal Draftsman which was attended by the Chief Fish~ries Officer the Kenya Chief Fisheries Officer and ~rr Nancarrow of the Ministry of Forest Development Game tl and Fisheries did much to clear up the difficulties of the position and it was decided that the only way of overcoming the weaknesses in the legislation was by amending the

Ordinance Normally this is a singularly lengthy undertaking Pbut in view of the urgency of the matter an amending J

Ordinance was passed through the Legislative Council in December 1959 However that was by no means the end of the matter for it was realised subsequently that certain

~~ ~ ~~~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

i

lJ Nr1- m

~U-OJ ro H 0rY) m ~ N t--- ID 0 m rY) p0 = (q r- 0 tr tr ID tr CO rl 0 OPi bull bull bull bull

0 _r- 0

0 rl 0 0 0 0 0 0 0 0 gtshy~~ o r- U2 jv -- B

CO OJ o rY) N rl ~

rl I I rY) I ID I m CO q 0 (

Pi m tr m CO tr q = N CO m pt I ro t--shy-_ _----- -r______ ---- ---- --PJ- __(_~_~1_ t~ shy

(

11

o definitions which would have to be included in any Gazette notice scheduling prohibited nets were far less simple to draft than they appeanrl to be

c bull

G- q

45 As a result of extensive correspondence and a) further meeting the difficulties were finally cleared up and at the time of writing publication of the Gazette notice is awaited Thereafter the amended legislation will if any cases are forthcoming ~veto stand the test of Court proceedings before it can be considered fully ade~uate

~

I ~CKNOWLEDGlVIENTS

II

Q

0 0

46 The Chief ]isheries Officer wishes to express his appreciation of and gratitude for the help received from a wide variety of other Government Officers These range from Administrative Officers an4 Chiefs through the Police to the Ministries and Departments responsible for FiSheries ~dministration in the three Territories Relations between the Lake Victoria Fisheries Service and these Organizations have at all times been excellent

0

0

(

~

~

47 Last but by no means least special mention must be made of the Legal Dr~ftsman in the attorney Generals Department Nairobi and of the Crown Counsel Kisumushy These two officers have beendeeply involved in overcoming the numerous snags apparent in the Control of Nets (Nyanza PrOVince) Ordinance 1958 To both of them the Chief Fisheries Officer wishes to extend his sincere appreciation of their good-humoured perseverance in struggling with legal problems of the most exasperating kind

0

Q c I

Q

AVVVtV bull i~V- I __ -1v -1 (imiddot --

j bull shy

(JD KELStiJL)

CHIEF FISHERIE~FICER--- -shy ~ i

l ~

(~

bull ti pound)

I~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

~- II ~_ s ~ a ~So (or ~ ~- ~

shy~ ~ -J-A bullbull ~J -~~~

~mlivlARY OF Al~NUAL CATCHES AT RBCOHDIHG STAT~ONS IN T~iHG-ANiIK~_Ll959

Station

uKurugusi(lO mths records) Il780l I liiwanza South ~r--

3

89 ll32 19858

35643

~~~ - shy

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

- -- --j- --- - ~ ~~ t ~ ~ f) - lit

bull - - ~ ~

Il fmiddotl-I f~ ~

-3

SUlVJlVLillY OF J~NNUJllJ CATCHES pound~T RECORDING STdIONs IN KENY~sect 1959 Continued

)

1

I I

Station Noof T Z ITMormo Clar Barb Bag ~rpt Lab SIbe Syno illle st Hapl0 Catch per net I Tiet TV nets Tilapia iJll Spp net - I~ --- _ - - I

Sori 15224 2t n 547 565 - 4106 40 1242 2639 7 8456 072 233 (5 mths

13260 19l~4~ r529 records)

~ I I I Ii Port Vic- ~69317 2 2 61 - 4216 397 1264 I

I

383 273 ~57869 8~5 - I 331 2276 000 252 toria Uyo a I (9 mths records) I I I__~

I

~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

I ro raquo~

1 bull bull bull ~~ tti bull (f -lit

i1i~ l-ei t1 li 4 SUlVilVIARY OF ANNUAL CATCHES AT RECORDING STATIONS IN UGANDA 19~

ljI

Station No of lType T E T V i Rapioi Labeo i Bag Barb lVIorm~ Clar S I be r Alest prot Ilsyno J Otherj Catch nets lof 1 i l I ~ I ~ 1 sPP bull j~ernet

net -1 l I i ~Jlo All Gll j I 1 I I J J i 1 i r ~

Nak~if-Ulu--b--e-r-( l 5 1 j i) j j i 1 i=231~3 canoes7236 men) 62877 44 11 l2070 30085 ~ ll3501 19 444441 4167 2l5l 31 5087 l I - 684 l799 422 1068 i 2 09~

I I I (T Z ) I i 1 ~I bull

Kasenyi (2482 72765 11 4953~--97I9 31930 8l [ 76826 8607 35020 6970i 92 367 879-rSITOTIZZ3TO22l242I

canoes6704 men) ~ I I I (TZ) r Bugonga (1360 32819 6417 ----0034 387ll1 40 i12388 4371 4239 3427 21 - ~ 742 I 30421 3~3 - l O~ 39-~1 37

I 1 11c-noes4075 men) I I 1 T (TZ)I_~

KJ gungu (4104 i I bull Z I iT~ i

_canoesl30n men )l3l 532 42256 l65939 330291 59168866 l2622 i 3608511060112766 300 f 2556 bull 85961 3 Il6 29lII

Katebo (2684 5 Ii 4111 i I 1 I Ii 1- TZ canoes6307 men) 52067 43t24695i 5937i 227 63 I 4986 l062 i 560 2676 28 8 ~ 268l I 3 1926

I

0 62 086 Nakiyenji(l997 5 M amp ~ i iii I r j ~ IT Z I canoes 5873 men) 48l63 Mall U924 21177 7902) 30 jl6242 5800 I middot9024 3959 30 34 l896 I 223 7446 0 84tl 6l

+Kaziru (l229 1 i I I T Z t l C8noes3259 men) 32080 11 30l8 6408 356 l8 5696 885) 730 763 - - l 679 l 326 103 10 59

1

~~~~~~~24~~~n)l3JL3l5 ~ 82517 223693 47331 59162459189281 21073 l0294 4 6 I 3482 I l 123313l8 HCyabasimba( 366 _~ J i j I I f I I

canoesl238 men) 8760middot 862 3109 2781 724 6464 [ 20ll i l48 4141 27 29 44 25 j - iO451lo64

~~~~~s~~~2 men~l40lQ ~

II

9441 707 4lQO i 1994 - 197 7 i lOl05 -~212l9_ l52t9080 l202j QO Iyasa t1275 - 5if4i1 I 1 i ---r I canoes398l men) 27284 amp4 23l4~ l535 i l6581l5356 l555 I 4960 1~340 l69l 820 24 328 li8 i - iOl4 fl bull l 1 Kaziru ( 5 mths ~

I

] I _ I l I I ~

~~~o~~~ l82 canoes Q9l9 i 4it~ 875 Ql 85 308 35l 5l20l I 2050 i 3l8i -I - l25 -I - 10212l3 1

lVlaseseCf2487 i i 1 ---r- t- IT Z I f

ca~oes 64657 moo) 519l63 6~942l 357007l 52081 422 102769 127306 1 71283 jl6785 - I 2119 ~l484l i II i 9474 1205 1252 BugongaC 796 ~ ~ Ii i I i I I ) j T Z I f canoes l68l men) 19669 3i 264 ll841 645681 2405 i 3297 i 31l I 9884 I~ l34 517 Qll45 24 935 2260 0l8 (4 92

2111 I l 1 I I l I 2 - j I II 2 u - 4 j ~ ~

I I --L-

+ ~~u - 0 uiC)ilchs recJrus only ++Kabltlsimb~ - 7 illontns records only

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

~-l ~ bull ~ 1(f ) ii ---~ - ~ Q1 ~~ ~ ll

I ~

ill C-- V ~ -~

SUMMARY OF ANNUAL CATCHES AT RECOEDING STATIONS IN UGANDA 1959 - Continued I

i I i Station IINa of Type ITE 1 T V I Hapl0 Labeo I Bag lBa~bIII~OIlIltt clar1 Slbe j AlestIprot Syno~ iOthr~I Catch

i nets of I I sPPoi pernetI net I I I I j I lTil lill 1 I I I I ~PP~ spp

IKatebo(7 T--1 1 ~ - - - fTZmiddot - I bull

records II

I I I j

Qt)7 men) 734 77547 i 176 533 r 29 1 63 1581 258 957 i 149 34 756 048 j 2637

SMOKED FISH LANDINGS

1lViisese( 6 mths 5amp i I i -----r I tj Irecords 230 cano~s 14t I l fl r I -I I ~

I 1428 men) - IGill f9887 80480 22981 I - ~34618 I 8317 72530 I 4923 i - I I 954 - I shy

I ~ I II ~ I

NATIVE TRAPS

I Datch per

NYlmirembe(4 mths I I j Ii trap records 184 canoes i

1

I I i Til Allop 2l-i- men) I 9254 I - 11322 i 271 I 15 - 22 I 60 30 182 I - I 260 017 )023

I I I I I I 1 1 I I

I Ki ami C3 mths bull I

j

records 408 I I 1 TZ carlOes438 men) 18316- 7182 j 4362 - - 120 45 - 426 I 442 1573 063 IOp66

NOTE Records of 1~ Seine nets taken at Kaziru ano Igoma have been omitted from this summary as they are for periods of a few months only but the original records

If are available in the Fisheries Office Entebbe~

~

~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

~~~- - ~ - ~~ -- ~ f j)

~

-__ ~ bull J bull t ~ ~ )

III ~-~

~ _4 -J -----~~~---

~ ~

SUlVllvlARY O~middot ANNUAL CATCHEb AT RECORDING STATIONS IN UGANDJi l959 - Continued H 0 0 K S

Station loOf IType Of TE yenaPlo babeo IBag lVlorm Clar Alesi ll~rot loof ICatch per l~arb IN~Of

hO~kS I hook I I I I I anoes men 100 hooks

I I I I I-- -t t Igoma(8 31075 I - - - -124 17 I ~ 164 - 1706 1191 3661 002 ~

bull m-tihsrecords) r

1I I L-t- I gt~-l---+----L_------__ishy

K~_wami (3 198 - +- - - - i 306 1----= L --~ -I L - - - I - - shy

illthsrecords) I I I I I J _ Ka zira (5 I r- _ I I 1 --1 I II

mt hs re cords) i3l847 I 9 - - 002 I - I 217 l13 - 540 - 4589 I 306 i l075

K~ tebo (8 I

~ 1 I I 1--4---+ Iillhsrecords) tL9l263 9 I - l t - t 90 l ~ - I 44~ _ l Il6~~1 -I l OOl

L----L- 1~t~~~e~~rds) Ill594 I () ~ I _ - 19 I - I - l86 =[l2 I 37 99 002 tI

I S8nYOnd~---j I I I I I m-Lllsrecordsl 9000 I 8 ~ I - - 7 - - 52 -)j 67 I - - O~Ol ~I

K~~iru (4 1 ---1-----1 I --r--r I ~---- ---t----r----+---------r mtlSrecords) I 46786 8 - - - I 96 -~II 311 - 208 I 1971 319 I GOl 1-----------+-- -+-----+---+----+- I

Mjedirembe I I I I 002 i

I -shy_~~~~j j 46686 I 8 60 -=- - 36 - ___ ~J_385 - 1_5_80__~l~~26

-----

~

~ T - c_ I r ~y - ~-

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

-----~

_ II) _- ~t ~ CI~ r ~) ljr~ g ~~ ~ bullbull -

~ - ~ iA bull _~ bull-Ay~

~ ~ SUNJlvlARY OF ~~NNUAL CATCriES AT RECOHDIHG STi~T~ONS IN T~HG-ANYII~L1959

I~arb ~ Station I No of IType of I T E II T V Hapld LabeJ ]jag T B_ ~O~lolals be bullAlestl prJ Synol Othrf-catchshynets net

u

spp per ne ~ I Til] J

NYanglgtUriibi~8 5Gill 33354 5550 I 525 40 3984 726 232 290 217 l5 327- lO - l 99 syen=t 2

If 1Njamukazi 164272 -- 50 3 220 1397 18 1876461JJ3g-(i 216 3 I 7110 2t-- 1 18 174 - )01 325

Ukurugusi (10 I 5332 94 26~ 26~83 6243 35l 5880 I 410 7 - 34 I 30 - p07 255if

mtpsrecords)-t I ~ J__ - I _ I Busiri 1 2438 I 1515 3406 22 i 4 3346 148 858 i 122 27 - 9 324 - ~02 ~ 01 I ~ver~ _21616 11 4016 639 1171 3 I 3836~_jl943 I 956l 17020 -26 - l05)3 l74_ -12~04 I Nyarrurembe (5 442 452 212 I - =-r-120 25 I 31 111 - - 45 - --=1501225mthsrecords) i I ~ 0 Ibull

Ni~l1ghumbi 42776 4-iGi1L55257 ~29661 877 58 7473 l1351 295 552 410 16 1380 60 - -5-middot9-+tL-~8-9

llwanza South l07l0 I ll4l 05 3263 79 I 218 299l i 6l l85 25l 243 49 244 23 T 2 62 ~03

J3usiri I 228l 903 4l 33 37 6 l602 70 54l 73 2 - l3 197 ~J2

Bweri 34811 11 35511 ~3416 i 32 96 7746 1297 2569 3342 ~18 - 3214 38 - 41F Nyamirembe (9 I 7--r--~~--1 I +-----1-- ~lshy

~ths~eCrdaL-~~l~~ I_~__l 9~~~_ 8 6 ~~~--l 72 1~4J_252 45 15 1~4_ __9_ - f~ 52

~~~~~~~~~d~~ 60131 2i11G~11 1662 I 654 ~0856 ~764 541 I 156 7 I 67 12448 506 9 949~ 39 59

l~jamukazi 5501 24 1542 21101 5583 ---31~3 1448 t129-- 52 126--~3~--J91 T Z 4 028 l5 20 I11

i ~ -- _ -_---r middot _--- ~ plusmn_-J--- IUkurugusi ( 10

mthsrecords) 17801 11 89 1132 19858 35643 4001 773 5472 30 948 2135 15 1417 - O07~02

-- -_ ~ i ~lwal1za South 407 -- 3144 l4~O ~457 Jl99 ll~ I ~_2 l21rL--l)713b04 1011 34 1_17_21__=-_P_6_2_middot~

~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~

~~ - lt -- bull I Jl ( ~

-- fmiddot~~ -- i ~ Ill ) ~ shy

~~ raquo ~

~~ ~

bullk ~ bull bull ~ ~p

SUMiILiillY OJ ~~NNUiiL CidCHES ~f REC0HDING STATIONS IN T~~NG~lNiIIG1 1959 - 9ontinued

Station Io of ITy~l T V Haplo kbeO-Bag-rsb -~mmiddotf1ar [Sbe Al~rprot Syuoi thro Catch nets net VJ- I A - spp ~~~et

Til AlI SPI

lJusiri 6075 2ilGil11 4 286T21249 13301 487 241 521 46 97711 187 - 64406 - 048118~

If~er~ 205_=-~~~-_~12l71 3404_ 40262 __ ~06tJ 1519 874 l_~7~_~3l__ ~295813B37 530 i34bb - -=-_ O 7~45]

lmiddotijcmJrembe (4 674 3 1 232 1310 143 237 27 r 45 32 25t) 542 _--r- 21 - 1035 61EII mtns records) I gt - ~ L

366 Busiri 12k419~17~_ 20001_1=-_-=_~1 61 I-_~ 11~112_~8 1_ -~~~887 J~ - 01315ol~

~eri _ ~~78 t~~Gill 15596 L~13 660455 1~168 i1~128~~95 223~~J-=-7~3~--=~_-=087_L~_~47L~~~~

5 11NOTE- Records of Gill nets taken at Mwanza South ) These have been omitted d 4middot111 II II II n Ukurugusi ) from this 8uwmary as

4 - II _ II il II

~ ~ Mwanza South ) they are for periods of II II II

3~ - ~ Nyanghumbi ) a few months only 1 but ~ II II II

2~ ~ Nyamukazi and Busiri ) the original records are 11 l Q1I II II ~ Busiri ) available in the Fisheries

~ - itl~=-II I II Nyamukazi and NyamirQD1bi ) Office 1 lVlwanza2~

-

~

-- ~-

lt )

~ -- I I ~ _~