Analysis on fly control and intestinal infectious diseases in Songjiang District of Shanghai
Objective To understand the control status of flies and intestinal infectious diseases in Songjiang District,and to provide theoretical basis for controlling fly density,insecticide resistance and reducing the spread of intestinal infectious diseases.Methods Flies captured with cage traps were identified and calculated for density.The insecticide resistance of Musca domestica to commonly used insecticides was tested with topical application.The infestation of flies was investigated by visual inspection.The reported incidence of intestinal infectious diseases was sorted out according to different years and months.Results The fly species captured in Songjiang District from 2016 to 2021 were mostly Isophora palustris(30.62％),Lucilia sericata(15.78％)and Musca domestica(11.92％).There was no significant difference in fly density among habitats(F=1.82,P＞0.05),but there was significant difference in fly density in different months(F=13.36,P＜0.05).Musca domestica developed high resistance to beta-cypermethrin and deltamethrin,low resistance to dichlorvos.The fly infestation was mainly in construction demolition sites,farmers'markets and restaurants.There were statistical differences in the reported incidence of intestinal infectious diseases classed in B and C in different years(x2=5 631,P＜0.05)and different months(x2=3 554.11,P＜0.05).Conclusion Flies were well controlled in Songjiang District,but the high resistance to pyrethroid insecticides was of concerning.During the peak of intestinal infectious diseases,fly density in key areas should be controlled by combining physical and chemical methods to reduce the probability of intestinal infectious diseases borne by flies.
NETL
NSTL
万方数据
