Resistance of Musca domestica L. to commonly used insecticides measured in Hongkou District of Shanghai

ObjectiveTo study the resistance of Musca domestica L. to insecticides in Hongkou District of Shanghai in 2016 and 2018.

MethodsWHO recommended topical application method was used to determine the resistance levels of Musca domestica to insecticides in Hongkou District.The experimental data were statistically analyzed by DPS software.

ResultsMusca domestica were found to have developed high resistance to β-cypermethrin, deltamethrin and low resistance to dichlorvos, the resistance ratios being 28.78, 121.06 and 4.30 folds respectively in 2016.Musca domestica had high resistance to β-cypermethrin, middle resistance to permethrin and low resistance to dichlorvos, the resistance ratios being 39.82, 12.71 and 4.04 folds respectively in 2018.

ConclusionIn Hongkou District, it us suggested that β-cypermethrin, deltamethrin and permethrin should be suspended or used less, and insecticides should be rationally used, which might reduce the amount of insecticides used and delay the occurrence of drug resistance.Environmental management or physical control measures should be strengthened in these areas.