Analysis of fly ecological surveillance results and insecticide resistance of Musca domestica in Huai'an in 2023
ZHOU Xiaoqing
LYU Mengmeng
CHEN Xipeng
ZHU Haiyang
WANG Xin
CAI Rong
Abstract：Objective To investigate the ecological characteristics of fly and the insecticide resistance of Musca domestica in Huai'an,so as to provide scientific evidence for the control of fly and the prevention of related infectious diseases.Methods Ecological surveillance of fly was conducted using the cage trapping method,and the insecticide resistance of M.domestica was measured using topical application method.Data were organized and analyzed using Excel 2019 and SPSS 20.0 software.The Kruskal-Wallis H test was employed to analyze fly densities in different habitats.Welch's analysis was used to compare fly densities in months.Spearman correlation analysis was applied to assess the correlation between M.domestica density and total fly density.Probit regression analysis was utilized to calculate LD50,95％confidence intervals,and resistance ratio of M.domestica.Results In 2023,the total fly density in Huai'an was 4.69 flies per cage.M.domestica was the dominant species,accounting for 45.24％.The highest fly density was observed in farmers' markets,at 7.13 flies per cage,with no significant differences in fly density among different habitats(H=4.382,P=0.223).Fly density exhibited a unimodal seasonal fluctuation pattern,peaking at 10.98 flies per cage in July.Significant variations in total fly density were observed in different months(F=13.641,P＜0.01).M.domestica density and total fly density showed similar trends and were significantly correlated(r=0.936,P＜0.01).The resistance ratios of M.domestica to dichlorvos,beta-cypermethrin,deltamethrin and dinotefuran were 3.25,378.71,46.02,and 293.58,respectively.Conclusion Huai'an exhibited a high diversity of fly species,with the peak density period in July.The farmers' market served as a key place for fly management.The dominant specie M.domestic had developed resistance to beta-cypermethrin,deltamethrin,and dinotefuran.Therefore,the single application of these insecticides should be minimized,and combinations of low-resistance insecticides should be prioritized.
Keywords：Musca domesticadensityseasonal fluctuationinsecticide resistance
Publication Date：2026-02-20
Online Publishing Date：2026-04-02(First online date of this platform, not the publication date of the document)
Pages：4( 115-118 )