Resistance of Musca domestica to four insecticides and its control strategy in Sanmenxia city

Objective To investigate the resistance of housefly,Musca domestica,to four insecticides in Sanmenxia city so as to provide the science evidence for the reasonable use of insecticides.Methods The resistance of house fly was determined by the traditional topical dropping method.Results The resistances ratios(R/S)of housefly to deltamethrin,DDVP,permethrin and Beta-cypermethrin were 120.17,69.02,65.91,and 59.78,respectively.Conclusion Housefly had high resistance to four common insecticides,highest to deltamethrin.It suggested that the rotational and mixed use of insecticides could control effectively housefly.The emphasis of housefly control will be put on the environment improvement,and the integrated pest management strategy will be the best effective way to control housefly.