济南市家蝇26年抗药性动态及防制对策

The resistance dynamics of Musca domestica to insecticides and the control strategies in the 26 years in Jinan city

目的了解济南市家蝇26年来抗药性的发展动态,探讨其防制对策。方法采用微量点滴法,对不同年份采集的不同地区家蝇进行生物测定,以确定家蝇的抗药性状况及其发展趋势。结果 1982年济南市区及周边地区家蝇对常用菊酯类药剂均处于敏感阶段,26年后对菊酯类药剂敏感性均有不同程度的下降。2008年,济南市家蝇对溴氰菊酯的抗性为75.00～211.67倍,对高效氯氰菊酯的抗性为25.52～116.21倍,均已达到中、高度抗性。结论济南市区及周边地区的家蝇对菊酯类药剂已产生不同程度的抗性,各县(市、区)应根据当地的具体情况制定防制对策。

Objective To investigate the resistance dynamics of Musca domestica in the 26 years in Jinan city for the development of its control strategies. Methods The micro-drop method was used for bioassay of M. domestica collected in different years in different parts of the city to determine its resistance status and trends. Insecticides dissolved in acetone were applied topically on the thoracic notum of female adults. Results M. domestica in Jinan city and surrounding area in 1982 were susceptible to conventional pyrethrin chemicals. However, 26 years later, the susceptibility of M. domestica to conventional pyrethrin chemicals decreased to varying degrees. Compared with the susceptible strain, the resistance of field housefly to dehamethrn and to bata-cypermethrinwas was 75.00-211.67 and 25.52-116.21 folds in 2008 respectively, indicating that the degree of housefly resistance was at a medium or high level. Conclusion The resistance of M. domestica to pyrethrin chemicals in Jinan and the surrounding areas has developed to varying degrees. Strategies for the control of resistance should be developed based on the local conditions.