Effect of moon light on efficiency of light trap

•

Chidananda.R PALB-4098 Vikas G.D PALB-4110

OBJECTIVE

To know the effect of moon light on efficiency of light trap

Work done

• Installation of light traps near plant breeding plot (mercury & CFL-trap) on full moon day, new moon day & normal day.

• Collection of trapped insects.• Classification of trapped insects to their

respective orders.• Counting of classified insects in each order.• Comparison of trapped insects w.r.t traps &

fullmoon day, new moon day & normal day.

Work done.

Sl.no Day Date

1. Full moon day 06-12-14

2. Normal day 11-12-14

3.New moon day(Near mango

orchard)

22-12-14

4. New moon day( near breeding plot) 20-01-15

Keeping the trap during the new moon day

CFL-trap Mercury trap

Insects trapped in the CFL-light trap

Insects trapped in the CFL-light trap

Insects trapped in the mercury-light trap

Classification of trapped insects into respective orders.

• Photos of classified insect orders: only few were selected for documentary purpose.

Trapped lepidopteran insects in CFL-light trap

Trapped coleopteran insects in CFL-light trap

Most abundant trapped beetle in CFL-trap

Insects belongs to Orthoptera in mercury trap

Insects belongs to lepidoptera in mercury trap

Insects belongs to coleoptera in mercury trap

Insects belongs to dermoptera in mercury trap

Insects belongs to diptera in mercury trap

Only one insect belongs to neuroptera (green lace wing) trapped in mercury light trap

Insects belongs to hymenoptera in mercury trap

Total insect orders.• ApterygotaProtura CollembolaThysanura Diplura• ExopterygotaEphemeroptera Odonata Plecoptera Grylloblatodea Orthoptera PhasmidaDermaptera Embioptera DictyopteraIsoptera Zoraptera PsocopteraMallophaga Siphunculata HemipteraThysanoptera• EndopterygotaNeuroptera Coleoptera Strepsiptera Mecoptera Siphonaptera Diptera Lepidoptera Trichoptera Hymenoptera

Only Highlighted orders are found in traps

Mercury trap(new moon day) 22-12-14

Sl.no

Orders No of trapped insects/order

1. Odonata(dragonfly)

03

2. Lepidoptera(spingid moths-5)

22

3. Hymenoptera(honey bees-2)

06

4. Dermoptera 09

5. Diptera 04

6. Coleoptera 08

7. hemiptera 05Highest-lepidopteraLowest-odonata

CFL-trap(new moon day) 22-12-14

Sl.no

Orders No of trapped insects/Order

1. Dictyoptera 02

2. Lepidoptera 86

3. Coleoptera(1 dung beetle)

219

4. Hemiptera (7 Nezara viridula)

243

5. Dermoptera 37

6. Hymenoptera 31

7. Diptera (syrphid-1)

45

Highest-hemipteraLowest-dictyoptera

Mercury trap-(new moon day) 20-01-15

Sl.no

Orders No of insects/order

1. Hymenoptera

16

2. Lepidoptera 19

3. Neuroptera 1

4. Coleoptera 8

5. Diptera 76

6. hemiptera 85

Highest hemipterans trappedLowest-neuroptera

CFL-trap(new moon day) 20-01-15

Sl.no

Orders No of insects/order

1. Hymenoptera 17

2. Lepidoptera 117

3. Dermoptera 32

4. Diptera 28

5. Hemiptera 92

6. Coleoptera 182

Highest-coleoptera.Lowest-Hymenoptera

Installing light trap on normal day 11-12-14

Mercury trap-normal day 11-12-14

Sl.no

Orders No of trapped insects/order

1. Diptera 22

2. Lepidoptera 18

3. Coleoptera 61

4. Hemiptera 19

5. Dermoptera 18

6. Hymenoptera

07

Highest-coleopteraLowest-hymenoptera

CFL trap-(normal day 11-12-14)Sl.no

Orders No of trapped insects/order

1. Diptera 41

2. Lepidoptera 56

3. Coleoptera 175

4. Hemiptera 183

5. Dermoptera 29

6. Hymenoptera 27

Highest- Hemiptera Lowest- Hymenoptera

Installing light trap on full moon day 6-12-14

Mercury trap(full moon day 6-12-14)Sl.no

Orders No of trapped insects/order

1. Diptera 43

2. Lepidoptera 37

3. Coleoptera 58

4. Hemiptera 47

5. Dermoptera 12

6. Hymenoptera 14

7. Orthoptera 01

Highest-coleopteraLowest-orthoptera

CFL trap(full moon day 6-12-14)Sl.no

Orders No of trapped insects/order

1. Diptera 52

2. Lepidoptera 64

3. Coleoptera 48

4. Hemiptera 32

5. Dermoptera 16

6. Hymenoptera 12

7. Orthoptera 02

Highest – lepidopteraLowest - orthoptera

Mercury trap-new moon day CFL-trap-new moon day

Mercury trap-new moon day) CFL-trap new moon day

Comparision b/w different days & traps

Mercury trap-normal day CFL trap-normal day

Mercury trap - full moon day CFL trap -full moon day

Comparision b/w different days & traps

Sl.no

Day Highest & lowest no of insects trapped in the order

CFL-trap Mercury trap

Highest Lowest Highest Lowest

1. New moon day(22-12-14)

(Near mango orchard)

Hemiptera Dictyoptera lepidoptera Odonata

2. New moon day(20-01-15)

(near breeding plot)

Coleoptera Hymenoptera Hemiptera Neuroptera

3. Normal day Hemiptera Hymenoptera Coleoptera Hymenoptera

4. Full moon day Lepidoptera Orthoptera Coleoptera orthoptera

Trap efficiency

Sl.no

Day Trap No. of insects Total no. of insects

1. New moon day Mercury 57 660CFL 603

2. New moon day Mercury 205 673CFL 468

3. Normal day Mercury 145 656CFL 511

4. Full moon day Mercury 212 438CFL 226

Comparing trap efficiency b/w different days

Conclusion

• Among the 30 orders only 7 orders were trapped in light trap.

• More no. of insects trapped in UV-light trap than mercury trap.

• Efficiency of trap (CFL & mercury put together) i.e. Highest no.of insects trapped in new moon day>normal day>full moon day.

THANK YOU