淡色库蚊对常用杀虫剂的抗性现状及治理对策

目的调查江苏省淡色库蚊对常用杀虫剂的抗性现状,提出蚊虫抗药性治理对策。方法在江苏省徐州、连云港和无锡3市郊区采集淡色库蚊幼虫,采用WHO生物测试法进行测定。结果江苏省淡色库蚊对氯菊酯和生物丙烯菊酯敏感;对敌敌畏抗性系数是29.42~205.55,属于高度抗性;对溴氰菊酯、高效氯氰菊酯、残杀威和双硫磷产生不同程度的抗药性。结论应加强对淡色库蚊抗药性监测,科学合理使用杀虫剂,预防或延缓抗药性产生。

Resistance of Culex pipiens pallens to insecticides and its resistance management

Objective To survey the resistance status of Culex pipiens pallens to several commonly used insecticides in Jiangsu Province,and learn how to prevent the occurrence and development of resistance. Methods Larvae of Cx.pipiens pallens were collected in the surburbs of Xuzhou,Lianyungang and Wuxi city in Jiangsu Province,then tested with WHO standard bioassay to calculate LC50 and resistance index.Results Cx.pipiens pallens was sensitive to permethrin and bioallethrin.Cx.pipiens pallens had high resistance to DDVP,the resistant index was 29.42-205.55,and Cx.pipiens pallens from these cities also had developed resistance to other insecticides in different levels.Conclusion Resistance should be monitored regularly.Insecticides should be used scientifically and rational to prevent and reduce the occurrence and development of resistance.