关键词: 淡色库蚊, 抗氰戊菊酯, 抗性谱, 抗性遗传分析

Abstract: Objective To test the cross-resistance spectrum and the genetic character of fenvalerate-resistant Culex pipiens pallens.Methods Larvae soaking method was applied to study the fourth nymphs of fenvalerate resistant and susceptible strains to acetamiprid,imidacloprid,abamectin,spinosad,indoxacarb and fipronil.The resistance inhrtitance was analyzed through reciprocal crosses and backcross.Results Fenvalerate had no cross-resistance to these six insecticides inCx.pipiens pallens;two or more autosomal genes to fenvalerate confer resistance inCx.pipiens pallens with a incompletely dominant genetic characteristic.Conclusion It is easy for Cx.pipiens pallens to pass resistance down to the offspring,which challenges the resistance management strategy.Therefore,in order to delay the resistance evolution,it is necessary to use the fenvalerate reasonably when it is applied to control mosquitoes in the field.