コブノメイガの成虫と幼虫における薬剤感受性の差異とその要因

概要

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The rice leaf folder, Cnaphalocrocis medinalis GUENEE, is a serious pest of rice plants in southwest Japan, and is a main target of chemical control. The susceptibility of adults and larvae to insecticide was compared by topical application. The LD_<50> of cartap for adults was smaller than that for larvae. However, in the case of monocrotophos and acephate, the LD_<50> values for adults were much larger than those for larvae. Analysis of the fate of the insecticides showed that the intake of monocrotophos and acephate was larger for adults than larvae. For acephate, less methamidophos was produced in adults than in larvae, but a homogenate of adults produced more methamidophos from acephate than for larvae. There were no differences in sensitivity to those organophosphorus insecticides of acethylcholinesterase between adults and larvae. It is believed that monocrotophos and acephate are stored in some tissues in adults.
日本応用動物昆虫学会の論文
1997-02-25