淡色库蚊幼虫对7种杀虫剂的敏感性和抗性调查

Survey on the sensitivity and resistance of Culex pipiens pallens larva to seven kinds of insecticide

目的为了解江苏省淡色库蚊幼虫对卫生杀虫剂的敏感性和抗药性发生发展状况进行生物学抗性调查。方法幼虫浸渍法。结果实验室淡色库蚊幼虫对溴氰菊酯、高效氯氰菊酯、氯菊酯、生物丙烯菊酯、敌敌畏、残杀威和双硫磷幼虫敏感性LC50分别为0.001 3、0.003 8、0.027 7、0.181 3、0.018 3、0.096 8、0.000 4 mg/L。南京、徐州、连云港和无锡等地蚊虫幼虫抗性分别是敏感品系的数倍到200倍不等。结论江苏省淡色库蚊幼虫对敌敌畏、双硫磷、溴氰菊酯、高效氯氰菊酯和残杀威等杀虫剂均产生不同程度的抗性。抗性调查的结果为指导江苏省蚊虫防治以及合理使用卫生杀虫剂提供科学依据。

Objective To investigate the resistance of Culex pipiens pallens larva to insecticides in Jiangsu Province and provide scientific evidence for control.Methods Larva immersion method.Results The lab population was the most susceptive with LC50 of 0.001 3 mg/L to deltamethrin,0.003 8 mg/L to beta-cypermethrin,0.027 7 mg/L to permethrin,0.181 3 mg/L to esbiothrin,0.018 3 mg/L to DDVP,0.096 8 mg/L to propoxur and 0.000 4 mg/L to temephos.The highest resistance ratio of insecticide was 200 in Nanjing,Xuzhou,Lianyungang and Wuxi.Conclusion In Jiangsu Province C.pipens pallens have developed different resistance to DDVP,temephos,deltamethrin,beta-cypermethrin and propoxur.It is necessary to use the result of survey to prevent the resistance from developing.