Mechanism of joint toxic action of Kitazin P with malathion in the malathion resistant green rice leafhopper, Nephotetiix cincticeps UHLER (Hemiptera : Deltocephalidae)

概要

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The mechanism of joint toxic action of Kitazin P[○!R] with malathion in the resistant green rice leafhopper was studied. From the toxicity test, high joint toxic action was observed only in resistant strains but not in susceptible ones. Kitazin P[○!R] showed no effect on AChE inhibition by malaoxon in vitro. 14C-Methyl malathion degradation in vitro was higher in resistant strains than in susceptible ones and this was considered to be one of the main resistance factors. Kiazin P[○!R] showed a strong inhibitory action on malathion degradation. From these results, in the mechanism of joint toxic action of Kitazin P[○!R] with malathion it was concluded that Kitazin P[○!R] inhibits malathion degrading carboxylesterase.
日本応用動物昆虫学会の論文