河南省两市区蚊蝇对常用杀虫剂敏感性测定

Measurement of the susceptibility of Culex pipiens pallens and Musca domestica to common insecticides in urban Henan province

目的了解河南省淡色库蚊和家蝇对常用卫生杀虫剂的敏感性。方法淡色库蚊采用幼虫浸渍法,家蝇采用点滴法进行测定。结果驻马店市城区淡色库蚊对供试杀虫剂相对抗性倍数为1.36～67.37倍,其中溴氰菊酯的抗性倍数最高;家蝇对供试杀虫剂相对抗性倍数为6.36～>443.39倍,其中残杀威的抗性倍数最高。南阳市城区淡色库蚊对供试杀虫剂相对抗性倍数为1.33～40.26倍,其中高效氯氰菊酯的抗性倍数最高;家蝇对供试杀虫剂相对抗性倍数为6.34～>443.39倍,其中残杀威的抗性倍数最高。结论驻马店和南阳市城区的淡色库蚊对双硫磷和仲丁威保持相对敏感,对溴氰菊酯和高效氯氰菊酯产生抗性;家蝇对常用卫生杀虫剂均产生了不同程度的抗性。因此,应科学合理使用杀虫剂,延缓蚊、蝇抗药性的发展。

Objective To determine the susceptibility of Culex pipiens pallens and Musca domestica to common insecticides in Henan province. Methods The dipping method and the topical application method were used to measure the susceptibility of Cx. pipiens pallens and M. dornestica to commonly used insecticides. Results In Zhumadian city, the resistance ratio of Cx. pipiens pallens to common insecticides was 1.36-67.37, and Cx. pipiens pallens had the highest resistance to deltamethrin. The resistance ratio of M. domestica was 6.36 to greater than 443.39, and M. dornestica had the highest resistance to propoxur. In Nanyang city, the resistance ratio of Cx. pipiens pallens was 1.33-40.26, and Cx. pipiens pallens had the highest resistance to beta-cypermethrin, The resistance ratio of M. domestica was 6.34 to greater than 443.39, and M. domestica had the highest resistance to propoxur. Conclusion Cx. pipiens pallens populations in investigated cities were still sensitive to temephos and fenobucarb but resistant to deltamethrin and beta-cypermethrin. M. domastica had developed different resistances to all insecticides. It is important to use insecticides appropriately to prevent the development of resistance in mosquitoes and houseflies.