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目的了解山东省单县淡色库蚊对常用5种化学杀虫剂的抗性状况,为合理有效地进行蚊虫化学防制提供依据。方法采用WHO生物测定方法,测定2012~2013年淡色库蚊敏感品系和现场种群对5种杀虫剂的抗性及增效系数。结果现场淡色库蚊种群对氯氰菊酯、残杀威、溴氰菊酯、三氯杀虫酯、DDVP的抗性指数,2011年分别为395.60、3.20、238.33、4.24和8.27倍,2012年分别为339.30、2.70、254.00、4.01和7.19倍。DDVP+三氯杀虫酯、残杀威+三氯杀虫酯复配增效系数分别为160.27~173.82和190.22~230.47。结论单县境内淡色库蚊对5种常用化学杀虫剂均产生不同程度的抗药性,应采取多种杀虫剂复配和增效剂与杀虫剂合用措施,以克服或延缓蚊虫抗药性的产生和发展。
Objective To understand the resistance of Culex pipiens pallens to five commonly used chemical insecticides in Shandong single county and to provide a basis for the rational and effective chemical control of mosquitoes. Methods WHO bioassay method was used to determine the resistance and efficiency coefficient of Culex pipiens pallens susceptible and in situ populations to five insecticides from 2012 to 2013. Results The resistance index of Culex pipiens pallens to cypermethrin, propoxur, deltamethrin, DDVP was 395.60, 3.20, 2.38.33, 4.24 and 8.27 times respectively in 2011 and 339.30 respectively in 2012, 2.70, 254.00, 4.01 and 7.19 times. DDVP + trichloro-insecticide, propoxur + trichloro-insecticide compound with synergistic coefficients were 160.27 ~ 173.82 and 190.22 ~ 230.47. Conclusion Culex pipiens pallens in different counties have different levels of resistance to five commonly used chemical insecticides. Multiple combinations of insecticides and combinations of synergists and insecticides should be taken to overcome or delay the resistance of mosquitoes The emergence and development.