家蝇(Musca domestica L.)成虫和幼虫对杀虫剂敏感性差异研究

摘要

In this paper, we reported the differences in susceptibility to insecticides between adults and larvaeof housefly, Musca aomestica ( L. ), and the mechanisms for the differences. The larvae of housefly were much moretolerant to insecticides than the adults, and the tolerance ratio to cyhalothrin was as high as 205. 5 for susceptiblestrain. Mechanism studies showed that higher GST activity was associated with higher insecticide tolerance in thelarvae. The co-toxicity coefficient of the mixture of cyhalothrin and methylene dithiocyanate(4: 1) on pyrethroid-re-sistant houseflies was 188.%报导了家蝇成虫和幼虫对杀虫剂敏感性的差异及其机理.家蝇的幼虫对杀虫剂的耐药性比成虫高,敏感性家蝇幼虫对三氟氯氰菊酯的耐药性是成虫的205.5倍.机理研究表明幼虫高GST活性与其较高的耐药性有关.三氟氯氰菊酯和二硫氰基甲烷混剂(4:1)对菊酯抗性家蝇的共毒系数达188.