Current status and changing trend of resistance of Musca domestica to commonly used insecticides in Tonghua,Jilin Province,China
Objective To investigate the susceptibility of Musca domestica to commonly used insecticides and the trend of resistance development in Tonghua,Jilin Province,China,so as to provide evidence for formulating fly control measures.Methods Field populations of M.domestica were collected with insect nets from livestock farms in Ji'an City,Tonghua County,and Dongchang District of Tonghua City.The topical application method was adopted to determine resistance to six commonly used insecticides(deltamethrin,beta-cypermethrin,alpha-cypermethrin,permethrin,dichlorvos,and chlorpyrifos).The data on M.domestica resistance to these insecticides in Tonghua City since 2013 were collected,and description statistics were used for data analysis with SPSS 27.0 software.Results For field M.domestica populations in the three counties(cities or districts)of Tonghua,the median lethal dose(LD50)values ranged from 0.020 7-0.041 4 μg/♀ for deltamethrin,0.028 0-0.035 3 μg/♀ for beta-cypermethrin,0.027 8-0.122 1 μg/♀ for alpha-cypermethrin,0.080 9-0.233 3 μg/♀ for permethrin,0.014 4-0.080 2 μg/♀ for dichlorvos,and 0.032 2-0.065 2 μg/♀for chlorpyrifos.Compared with sensitive strains in literature,the resistance ratios of M.domestica in Tonghua City were 34.50-69.00 for deltamethrin,40.00-50.43 for beta-cypermethrin,6.04-26.54 for alpha-cypermethrin,8.89-25.64 for permethrin,2.82-15.73 for dichlorvos,and 0.75-1.52 for chlorpyrifos.The resistance levels in Dongchang District to deltamethrin,beta-cypermethrin,and dichlorvos peaked in 2013-2014,decreased in 2020,and rebounds in 2023.Conclusions M.domestica populations in Tonghua City exhibited varying levels of resistance to pyrethroid insecticides,which were highly resistant to deltamethrin and beta-cypermethrin,lowly to moderately resistant to dichlorvos,and susceptible to chlorpyrifos.Comprehensive control measures should be adopted,focusing on environmental control,and appropriately adopting physical and biological control measures,to delay the development of insecticide resistance.
万方数据
维普
