【摘要】 目的了解大连市区家蝇对5种常用杀虫剂的抗性水平,为指导家蝇防制提供科学依据。方法采用微量点滴法,测定家蝇半数致死量(LD50)。结果大连市家蝇对溴氰菊酯、高效氯氰菊酯、敌敌畏、毒死蜱、残杀威的LD50依次为0.009 141 28(μg/♀)、0.044 499 52(μg/♀)、0.137 490 08(μg/♀)、0.184 592 448(μg/♀)、>97.27(μg/♀),对残杀威、溴氰菊酯、高效氯氰菊酯、毒死蜱、敌敌畏抗性倍数依次为>275.474 4、23.439 2、15.892 7、6.134 7、2.313 1。结论大连市区家蝇对5种常用杀虫剂均产生了明显的抗性,残杀威、溴氰菊酯、高效氯氰菊酯均为高抗,毒死蜱为中抗,敌敌畏为低抗。更多还原

【Abstract】 Objective To understand the insecticide resistance of Musca domestica to 5 common insecticides in Dalian,and provide a reference for fly control.Methods The median lethal dose(LD50) of the drug on Musca domestica was determined by dropping method.Results The LD50values of deltamethrin,beta-cypermethrin,dichlorvos,chlorpyrifos and propoxur were 0.009 141 28(μg/♀),0.044 499 52(μg/♀),0.137 490 08(μg/♀),0.184 592 448(μg/♀),and > 97.27(μg/♀),respectively.The resistance index of Musca domestica to propoxur,deltamethrin,beta-cypermethrin,chlorpyrifos and dichlorvos were >275.474 4,23.439 2,15.892 7,6.134 7,and 2.313 1,respectively.Conclusion The collected Musca domestica in Dalian presented obvious resistance to the five insecticides,and showed high resistance to propoxur,deltamethrin and beta-cypermethrin,middle resistance to chlorpyrifos,and low resistance to dichlorvos.更多还原