采用微量点滴法测定家蝇对拟除虫菊酯杀虫剂胺菊酯和醚菊酯、有机氯杀虫剂三氯杀虫酯、有机磷杀虫剂辛硫磷、氨基甲酸酯杀虫剂仲丁威和残杀威 6种药物的敏感性。实验结果表明 ,苏州市家蝇野生品系对胺菊酯和醚菊酯的敏感性下降幅度最大 ,抗性指数分别达 6 2 4和 2 43;对三氯杀虫酯和辛硫磷的敏感性也呈下降趋势 ,与家蝇敏感品系相比 ,其抗性指数分别为 2 0 7和 1 93;对仲丁威和残杀威的抗性指数分别为 1 37和 1 0 3。苏州市家蝇野生品系对所测试的 6种杀虫剂的敏感性均呈不同程度下降趋势 ,可能与杀虫剂间的交互抗性有关 Determination of pyrethroid insecticides, tetramethrin and ethyrin, organochlorine pesticides, chlorpyrifos, organophosphorus pesticides, phoxim, carbamate insecticides, Ding Wei and disability Granville six kinds of drug sensitivity. The experimental results showed that the susceptibility of the wild strains of housefly in Suzhou to tetramethrin and etofenproe decreased the most, and the resistance index was respectively 624 and 433. The susceptibility to chlorfenapyr and phoxim Also showed a downward trend. Compared with susceptible strains of housefly, the resistance index was 207 and 1 93, respectively. The resistance index to fenbutatin and propoxur was 1 37 and 103, respectively. The susceptibility of the wild Musca domestica strains to the six pesticides tested showed a downward trend to varying degrees, which may be related to the cross resistance between insecticides