Mechanisms of Permethrin Tolerance in the Common Green Lacewing (Neuroptera: Chrysopidae)

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An investigation was performed to determine the possible role of metabolism in tolerance of permethrin by larvae of the common green lacewing, Chrysopa carnea Stephens. Following topical application, C. carnea metabolized 80% of cis-permethrin and 71% of trans-permethrin within 2 h; about 95% of both cis and trans isomers were metabolized by 50 h. The higher toxicity of trans is ascribed to its higher stability against degradation in C. carnea. Rapid degradation by C. carnea apparently accounts for tolerance to permethrin in this species. Detoxication of permethrin was compared between C. carnea and the tobacco budworm, Heliothis virescens (F.). C. carnea degraded cis 1.7 times faster than trans, while H. virescens metabolized trans at a slightly higher rate than cis. In the presence of esterases, permethrin was metabolized faster by C. carnea than H. virescens.

Document Type: Research Article

Publication date: June 1, 1983

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