The Effect of Malathion on the Weight, Fecundity and Longevity of Ischiodon scutellaris Fabr. (Diptera: Syrphidae)
The effects of sub-lethal doses of malathion on the weight, fecundity and longevity of Ischiodon scutellaris Fabr. were studied. The LDso values for malathion, applied topically to the third instar larvae, were 26.9 X 10-2 (24h) and 18.7 x 10-2 (48h) /lg/larva; the LD9S values were 146 X 10-2 (24h...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
1983
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| Online Access: | http://psasir.upm.edu.my/id/eprint/2243/1/The_Effect_of_Malathion_on_the_Weight%2C_Fecundity_and_Longevity_of.pdf http://psasir.upm.edu.my/id/eprint/2243/ |
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| Summary: | The effects of sub-lethal doses of malathion on the weight, fecundity and longevity of Ischiodon
scutellaris Fabr. were studied. The LDso values for malathion, applied topically to the third instar larvae,
were 26.9 X 10-2 (24h) and 18.7 x 10-2 (48h) /lg/larva; the LD9S values were 146 X 10-2 (24h) and
127.6 X 10-2 (48h) /lg/larva.
There was a significant difference (at 5% level) in the weight and longevity of female flies treated,
at the third larval instar stage, with different doses of malathion. A similar weight difference (at 5% level)
was noted between pupae treated at the larval stage.
Measurable latent toxicity was evident for malathion. The LDso for direct toxicity was 41.7 X
10- 2 /lg/larva and for total toxicity it was 21.4 X 10-2 /lg/larva. |
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