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有机磷对抗拟除虫菊酯家蝇的毒力
引用本文:金莹,冯国蕾.有机磷对抗拟除虫菊酯家蝇的毒力[J].昆虫学报,2001,44(2):182-186.
作者姓名:金莹  冯国蕾
作者单位:中国科学院动物研究所,
基金项目:国家自然科学基金资助项目!(39970 495 )
摘    要:测定敏感、抗溴氰菊酯(Del-R)、抗氯菊酯(2Cl-R)的家蝇品系对有机磷杀虫剂敌敌畏、辛硫磷及马拉硫磷的LD50,α-乙酸萘酯(α-NA)酯酶动力学,酯酶的活性和酯酶的抑制作用。Del-R和2Cl-R的家蝇品系对三种有机磷杀虫剂的抗性倍数为0.966~7.190倍,均为低抗水平。三个家蝇品系的羧酸酯酶活性水平与抑制中浓度存在正相关性,说明羧酸酯酶在抗拟除虫菊酯家蝇对有机磷杀虫剂的抗性中起一定的作用。

关 键 词:家蝇  酯酶  羧酸酯酶  有机磷杀虫剂  
文章编号:0454-6296(2001)02-0182-05
修稿时间:1998年12月8日

Toxicity of organophosphate insecticides to pyrethroid-resistant houseflies,Musca domestica vinica
JIN Ying,FENG Guo lei.Toxicity of organophosphate insecticides to pyrethroid-resistant houseflies,Musca domestica vinica[J].Acta Entomologica Sinica,2001,44(2):182-186.
Authors:JIN Ying  FENG Guo lei
Abstract:The LD50,α-naphthylacetate(α-NA)esterase kinetics,α,β-NA esterase activity and IC50 of dichlorvos(DDVP),phoxim and malathion to Del-R、2Cl-R and susceptible (SP) strains of houseflies were determined. The resistances of the Del-R and 2Cl-R to DDVP, phoxim and malathion were 0.966~7.190 folds as much as those of the SP strain,indicating a low resistance level to organophosphate insecticides in the pyrethroid-resistant houseflies. An obvious correlation of the carboxylesterase activity with IC50 suggested that the carboxylesterase would play a significant role in the resistance to organophosphates in pyrethroid resistant houseflies.
Keywords:housefly  esterase  carboxylesterase  organophosphate  insecticides
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