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目的了解潍坊市8县市淡色库蚊幼虫对6种常用杀虫剂的抗性现状,指导合理使用杀虫剂。方法浸渍法测定淡色库蚊幼虫对杀虫剂的抗性水平。结果潍坊市8县市淡色库蚊对双硫磷的抗性倍数为13.32~7.12,对氯菊酯的抗性倍数为7.89~1.99,对残杀威和仲丁威的抗性倍数分别为5.78~4.26和4.34~1.61,对溴氰菊酯和高效氯氰菊酯较为敏感,抗性倍数分别为3.98~1.83和2.02~0.72。结论潍坊市淡色库蚊对双硫磷、残杀威、仲丁威、氯菊酯抗性水平较高,应高度关注杀虫剂的抗性状况,根据监测结果随时调整杀虫剂的应用。
Objective To understand the resistance status of 6 Culex pipiens pallens larvae in 8 counties and cities in Weifang, and to guide the rational use of insecticides. Methods Immersion method was used to determine the insecticide resistance of Culex pipiens pallens larvae. Results The resistance fold of Culex pipiens pallens to Weifang was 13.32-7.12, and that of Permethrin was 7.89-1.99. The resistance to Propafenzan and Cydonil was 5.78 ~ 4.26 and 4.34-1.61, respectively, were more sensitive to deltamethrin and beta-cypermethrin. The resistance multiples were 3.98-1.83 and 2.02-0.72, respectively. Conclusion Weifang City Culex pipiens pallens possesses a high level of resistance to diphtheria, propoxur, sec-butyl and permethrin. We should pay close attention to the resistance status of insecticides and adjust the application of insecticides at any time according to the monitoring results.