舟山淡色库蚊对常用杀虫剂的抗性调查

Resistance of Culex pipiens pallens to commonly used insecticides in Zhoushan

目的了解舟山淡色库蚊抗药性水平,为杀虫剂的合理使用提供科学依据。方法采用WHO推荐的药液浸渍法,测定舟山淡色库蚊自然品系对3类常用杀虫药剂的抗药性水平。结果淡色库蚊对高效氯氰菊酯的抗性倍数(R/S)为19.14,属中抗水平;溴氰菊酯、敌敌畏、氯菊酯、残杀威抗性均属低抗水平,其抗性倍数(R/S)分别为7.33、6.67、5.93、5.15。结论舟山淡色库蚊自然品系对5种杀虫剂均产生了一定的抗药性,应合理使用杀虫剂,提倡物理灭蚊,从而延缓蚊类抗药性的发展。

Objective To investigate the resistance of Culex pipiens pallens to commonly used insecticides. Methods The larvae dipping method recommended by WHO was employed for bioassays. Results Culex pipiens pallens developed medium resistance to beta-cypermethrin with the ratio of 19. 14,low resistance to deltamethrin,dichlorvos,permethrin and propoxur,the R / S were 7. 33,6. 67,5. 93 and 5. 15 respectively. Conclusion Culex pipiens pallens developed different resistance to the five commonly used insecticides in Zhoushan. It is necessary to use insecticides reasonably and carry out physical control for delaying the development of resistance.