关键词: 家蝇, 雌成虫, 杀虫剂敏感性, 溴氰菊酯

Abstract: Objective To provide base data for insecticide resistance monitoring in house fly (Musca domestica),a study was undertaken to establish the susceptibility of female house fly to deltamethrin at different development days after eclosion. Methods Topical application method was used based on the WHO protocols,in laboratory colony ofM.domestica,which was unexposed to insecticides for a period of thirty years. Mortality rates recorded at different exposure doses. Data were subjected to analysis and the susceptibility was calculated at LD₅₀ by comparison with each other. Results The LD₅₀ values for deltamethrin was the highest after one day eclosion,though the flies was the lightest. The susceptibility was relative stabilization from 2 to 7 days,but after 8 days the flies were more susceptive to detalmethrin than other tested days. Male adult was more susceptive than female. Conclusion The results showed that insecticide resistance testing should using a relative standard method.