chilean fleet operations on the jack mackerel fishery 2004 document prepared for the third bilateral...
DESCRIPTION
Catches In 2004 the total jack mackerel catch quota allowed between the I and X regions registered 1.48 million tons, it was caught almost completely. (98%).TRANSCRIPT
Chilean fleet operations on the jack mackerel fishery 2004
Document prepared for the Third Bilateral Consultation on Fisheries Conservation between the Governments of Chile and the People´s Republic of China,
April 18-19-20, 2005.
Chilean Fleet Operation The jack mackerel fleet operation in the centre south zone during 2004 was similar to that of 2003, with an operative fleet of 44 fishing vessels. This fleet shows a decrease on the fishing effort of 60% with respect to 1997, when fisheries management started in order to recover the biomass of the resource.
0
20
40
60
80
100
120
Nº o
f ves
sels
Operative 1997 Operative 2004
Catches In 2004 the total jack mackerel catch quota allowed between the I and X regions registered 1.48 million tons, it was caught almost completely. (98%).
00,5
11,5
22,5
33,5
44,5
5
93 94 95 96 97 98 99 00 01 02 03 04
Year
Land
ings
(mill
ion
ton)
Quota
Total Landings
CatchesTwo different periods can be observed in the jack mackerel landings on 2004, the first one between January and August with high catches (monthly average for this period of 150,000 tons) and a second period of low catches between September and December.
0
50000
100000
150000
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250000
J F M A M J J A S O N D
Month
Land
ings
(ton
n)
CatchesJack mackerel catches outside the Chilean EEZ during 2004 reached 297,000 tons, concentrated between June and October 2004.
0
500.000
1.000.000
1.500.000
2.000.000
2.500.000
3.000.000
3.500.000
4.000.000
4.500.000
Land
ing
(t)
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04
Year
Within EEZOutside EEZEX-URSS Outside EEZ
Space-temporary distribution of fleet operations
The jack mackerel fleet operation during 2004 followed a very similar pattern to that showed during 2003. Thus the operation between January and May was focused in the centre-south zone within the Chilean EEZ, and it further operated outside the EEZ between June and September.
Finally, the fleet operation between October and December occurred in the coastal area within the EEZ, with low lever catch.
Toneladas
1 to 500 500 to 1 ,000 1 ,000 to 1 ,500 1 ,500 to 2 ,600
Figura 4A D istribución espacio-tem pora l (comp leta) de las capturas del jure l de la flota ce rquera industrial en la Z ona Centro-Sur, enero-junio 2003 y 2004.
85° 83° 81° 79° 77° 75° 73° 7 1°
45°
43°
41°
39°
37°
35°
33° V ALP A RA IS OS AN A NTO N IO
C ON S TIT UCIO N
T ALCAHU A NO
VA LDI VIA
M AR
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP ARA IS OS AN A NTO N IO
C ON S TIT UC ION
T ALCA H UA NO
V ALD IV IA
FEB
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° VA L P ARA ISOS AN A N TO N IO
C ON S TITU C IO N
T AL C A H UA N O
V AL D IV IA
ENE
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R AIS OS AN A N TO N IO
CONS T ITU CIO N
T AL CA H UA NO
V ALD IV IA
ABR
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP ARA IS OS AN A NTO N IO
C ON S TIT UC ION
T ALCA H UA NO
V ALD IV IA
M AY
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° VAL PA R A IS OS AN A N TO N IO
CO N ST IT U C ION
T AL C A H U AN O
V AL D IV IA
EN E
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OS AN A NT O NIO
CO NS TIT UC ION
TA LC AH UA NO
V AL DIV IA
FEB
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V A LP A R AIS OSA N A NT O NIO
CO N S TIT UC ION
TALC A HUA N O
V AL DIVIA
MAR
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A RA IS OS AN A NT O NIO
CONS TITUC IO N
TA LC AH UA NO
V AL DIV IA
ABR
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V AL P A RAIS OSA N A NTO NIO
C O NS TIT UC IO N
TA LC A HU AN O
V AL DIV IA
M A Y
2003 2004
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A RAIS OSA N A NTO NIO
CONS T IT UCION
TALC AHU AN O
VA LDIV IA
85° 83° 81° 79° 77° 75 ° 73° 71°
45°
43°
41°
39°
37°
35°
33° VA LP A RAISOS A N A NT ONIO
CO NST ITUCIO N
TALCA HUAN O
V A LDIV IA
JUN JU N
Tone ladas
1 to 500 500 to 1 ,000 1 ,000 to 1,500 1 ,500 to 2,600
Figura 4A D istribución espacio -tem pora l (com p leta ) de las capturas del jure l de la flo ta cerquera industria l en la Zona C entro-Sur, ju lio-d ic iem bre 2003 y 2004 .
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A RA IS OS AN A NTO NIO
C O NS TIT UC IO N
TA LC A HUA NO
V AL DIV IA
SEP
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OSA N A N TO NIO
C O NS TIT U CIO N
TA LC A HUA NO
VA L DIV IA
AG O
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A RA IS OS AN A NTO NIO
C O NS TIT UC IO N
TA LC A HUA NO
V AL DIV IA
JUL
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OSA N A N TO NIO
C O NS TIT U CIO N
TA LC A HUA NO
VA L DIV IA
O C T
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OSA N A N TO NIO
C O NS TIT U CIO N
TA LC A HUA NO
VA L DIV IA
NO V
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° VA LP A R A IS OS AN A NT O NIO
CO N S TIT UC IO N
T A LC AH UA N O
V A L DIV IA
JUL
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OS AN A NT O NIO
C ON S TIT UC ION
T A LCA H UANO
V ALD IV IA
AG O
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R AIS OS AN A NTON IO
CONS T ITU CIO N
TA LC A HU A NO
V A LDIV IA
SEP
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OS AN A NT O NIO
C ON S TIT UC ION
T A LCA H UANO
V ALD IV IA
O CT
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V ALP A R A IS OS AN A NT O NIO
C ON S TIT UC ION
T A LCA H UANO
V ALD IV IA
NO V
2003 2004
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V A L PA R A IS OS A N A NT O NIO
CO NS T IT UC IO N
T AL CA H UA N O
V A L DIV IA
85° 83° 81° 79° 77° 75° 73° 71°
45°
43°
41°
39°
37°
35°
33° V A LP AR AIS OS A N A NT O NIO
CO NS T ITUC IO N
TA L CA HU A NO
V A LDIV IA
DIC D IC
Biological characteristics during 2004. During 2004, a jack mackerel mode increase was observed, this is explained by the fortification of the greater individuals and by a decrease of the recruitment (juvenile contingent), with a structure size between 17 and 62 cm (Fork Length), and a main mode of 29 cm Fork Length.
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0,1
0,12
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8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58
Biological characteristics during 2004.In terms of the resource state of maturity during 2004, the figure shows that between January and July the females are in a state of initial maturity and that between August and December a progressive level of maturity is observed.
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Enero Febrero Marzo Abril Mayo J unio J ulio Agosto Septiembre Octubre Noviembre Diciembren: 1120 n: 804 n: 1010 n: 941 n: 857 n: 674 n: 604 n: 856 n: 198 n: 334 n: 331 n: 154
Virginales Maduración incipiente Maduración avanzada Hidratados En desove
n°=1.072
Biological characteristics during 2004.
The Gonadosomatic Index, shows that during 2004 (February and July) there is a rest in the spawning and reproductive processes, and a progressive increase of the sexual maturity between August and December.
When comparing this index with the historical information, we can observe a loss of the reproductive potential due to the incorporation of juveniles to the process, and since the occurrence of “El Niño 97-98”, there has been no index recovery in the long term.
Biological characteristics during 2004.
0,0
0,5
1,0
1,5
2,0
2,5
E M M J S N E M M J S N E M M J S N E M M J S N E M M J S N E M M J S N E M M J S N E M M J S N D
1979-96
1997 19991998 20022000 2001 2003 2004
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