Abstract:

Objective To investigate the current insecticide resistance status of dengue vector Aedes albopictus to commonly used insecticides in Mianyang city, so as to provide a basis for the rational use of insecticides. Methods The larvae dipping method was used to measure the insecticide resistance of the mosquitoes to commonly used insecticides. Results The resistance ratios of Ae. albopictus was 46.04-fold to deltamethrin, 45.18-fold to beta-cypermethrin, 249.60-fold to topermethrin for the highest, 2.44-fold to temephos, and 2.32-fold to DDVP for the lowest. Conclusion Aedes albopictus showed high resistance to pyrethroid insecticides, but low resistance to organophosphorus insecticides. Insecticides should be used strategically to hinder the development of insecticides resistance.

Key words: Aedes albopictus, Resistance coefficient, Insecticides

摘要：

目的 了解绵阳市城区登革热媒介白纹伊蚊对常用杀虫剂抗药性现状，为合理使用杀虫剂提供依据。方法 采用幼虫浸渍法，测定蚊虫对常用杀虫剂的抗性倍数。结果 白纹伊蚊对氯菊酯的抗性倍数最高，为249.60倍；对敌敌畏的抗性倍数最低，为2.32倍；对溴氰菊酯、高效氯氰菊酯、双硫磷的抗性倍数分别为46.04、45.18和2.44倍。结论 绵阳市登革热媒介白纹伊蚊对拟除虫菊酯类杀虫剂产生了高抗性，对有机磷类杀虫剂抗性较低。在蚊虫防治中，要采取综合治理措施，加强抗药性监测，科学合理使用杀虫剂，控制抗药性发展。

关键词: 白纹伊蚊, 抗性系数, 杀虫剂