合成幼若ホルモン類似体のアカイエカ幼虫に対する致死効果

概要

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We have evaluated lethal activity of 19 synthetic juvenile hormone analogues against of Culex pipiens pallens. All tests were conducted in 300ml glass vessels containing 200ml of water provided with a small amount of food. Thirty of 3rd or 4th instar larvae were introduced into each vessles. Tested juvenile hormone analogues were mixed with 30% of a emulsifier, and certain amount of the mixture was added into the vessels to make emulsions with known concentration of JH analogues. The number of dead larvae and pupae were recorded daily until all test insects have emerged out. All compounds tested were characterized by their inhibition of pupation and adult development, but not by toxicological kill. With many compound tested at 10ppm a high percentage of the larvae gave rise to abnormal pupae resulting in their death. Compounds No. 17 and 19 were most effective in blocking adult development of the 4th instar larvae, giving (LC)_<50>'s as 0.04 and 0.03ppm respectively. The results are of special interest to control the mosquito larvae which has become resistant to all conventional insecticides, and as the alternative control agent of the conventional insecticides in respect of enviromental pollution.
日本衛生動物学会の論文
1974-02-15