淡色库蚊对常用杀虫剂的抗药性及防治对策研究

Resistance of Culex pipiens pallens to common used insecticides and its control strategy

目的了解徐州市淡色库蚊幼虫对8种常用杀虫剂的抗药性现状,为合理选用杀虫剂,指导蚊虫防治提供科学依据。方法采用WHO统一的蚊虫幼虫浸渍法,测定淡色库蚊幼虫半数致死浓度(LC50)。结果与实验室敏感品系比较,淡色库蚊幼虫对高效氯氰菊酯、氯菊酯、生物丙烯菊酯、残杀威、仲丁威抗性为敏感水平;对溴氰菊酯、双硫磷的抗药性较低;对敌敌畏呈高抗药性。结论在蚊虫治理中,提倡采取综合防治措施,结合抗药性实际情况,合理选择杀虫剂。

Objective To investigate the resistance of Culex pipiens palllens larvae to 8 kinds of common used insecticide in Xuzhou,and guide the control of Culex pipiens palllens larvae by choosing appropriate chemical insecticide.Methods Selecting 8 insecticides to test the larvae resistance of Culex pipiens palllens according to the method provided by WHO,and assaying the medium lethal concentration（LC50） of Culex pipiens palllens larvae. Results Compared with the laboratory susceptible strain,the resistance of Culex pipiens palllens larvae to beta-cypermethrin,permethrin,bioallethrin,propoxur and BPMC was in sensitive level.Its resistance to trichlorine and temephos was in lower level.Culex pipiens palllens larvae to DDVP had the highest resistance.Conclusion In mosquito control,it is necessary to take prevention measures,combining the actual conditions and rational selection of reasonable insecticide.