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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。
Objective To understand the status of dengue vector-mediated Aedes albopictus resistance to commonly used insecticides in Mianyang city and to provide basis for rational use of insecticides. Methods The larvae dipping method was used to determine the resistance of mosquitoes to common insecticides. Results Aedes albopictus had the highest fold of resistance to permethrin at 249.60 folds, the lowest resistance to dichlorvos was 2.32 fold, and resistance to deltamethrin, alpha-cypermethrin and diphtheria were 46.04 , 45.18 and 2.44 times. Conclusion The dengue vector Aedes albopictus in Mianyang has high resistance to pyrethroid insecticides and low resistance to organophosphate insecticides. In mosquito control, we must take comprehensive management measures to strengthen drug resistance monitoring, scientific and rational use of pesticides, control of drug resistance development.