Abstract: Objective To investigateMusca domesticaresistance to commonly used insecticides in Tianjin in 2013, and to study the trend of insecticide resistance by comparison with historical data. Methods Biological assay was applied to determine the resistance levels of M. domesticato deltamethrin, DDVP, and propoxur. The results were compared with the historical data in Tianjin.Results Musca domesticain Tianjin showed different levels of resistance to DDVP, deltamethrin, and propoxur. Statistics revealed that the resistance to DDVP (19.33 fold) was the highest, and that the resistance to propoxur was the lowest (2.34 fold). The resistance to propoxur was significantly different from the resistance to the other two insecticides. In comparison with historical data, it was found that the insecticide resistance ofM. domesticawas decreased in Tianjin in the past 10 years.Conclusion Routine surveillance of the insecticide resistance ofM. domesticaprovides evidence for the screening and rational use of chemical pesticides, and therefore effectively prevents and delays the insecticide resistance ofM. domestica.

Key words: Musca domestica, Insecticide resistance, Trend

摘要： 目的 调查2013年天津市家蝇对溴氰菊酯、敌敌畏和残杀威3种常用杀虫剂抗药性水平,与历史数据进行比对,了解天津市家蝇对杀虫剂抗药性的发展趋势。方法 采用生物测定方法研究2013年天津市家蝇对溴氰菊酯、敌敌畏和残杀威3种常用杀虫剂的抗药性水平,比对历史数据得到天津市家蝇抗药性趋势。结果 天津市家蝇对敌敌畏、溴氰菊酯和残杀威均产生不同程度的抗药性,其中对敌敌畏的抗药性水平最高,达19.33倍,对残杀威抗药性水平最低,为2.34倍。其中对残杀威的抗药性与其他2种药物相比差异有统计学意义。通过与历史数据进行比对分析发现,在过去的10余年中天津市家蝇的抗药性水平均有不同程度的下降。结论 开展家蝇抗药性常规监测,筛选及合理使用化学杀虫剂,可以有效抑制和延缓家蝇对杀虫剂高抗性的产生。

关键词: 家蝇, 抗药性, 发展趋势