Analysis of rodent monitoring results in Shenyang City from 2018 to 2022

WANG Dingran; WU Xu; ZHOU Bo; ZHU Yang; JIA He; YU Guanhua; WU Sixuan

doi:10.19821/j.1671-2781.2023.06.011

Abstract：Objective To master the dynamic changes of rodent density,population distribution and seasonal fluctuations in different years and different habitat types in Shenyang,and to provide a scientific basis for rodent control.Methods The trap(sticky)night method was used for monitoring.Three monitoring environment types were set up:residential areas,catering industry and rural natural villages,and two monitoring sites were set up for each type of monitoring environment.Results From 2018 to 2022,a total of 17 476 effective traps were collected,and 47 rodents were captured,with an overall rodent density of 0.27%.The rodent density was controlled below 1.00%during the five-year period.The rodent density in different habitats of Shenyang was rural natural villages(0.34%)＞catering industry(0.28%)＞residential areas(0.19%),with a statistically significant difference in different habitats(χ2=18.668,P＜0.001).The peak of rodent density in Shenyang occurred in July in summer,and the lowest in winter.A total of 47 rodents were captured,including Rattus norvegicus,Apodemus agrarius,Mus musculus and M.musculus orientalis.Among them,R.norvegicus was the dominant species in Shenyang,with 32 rodents captured in the past five years,accounting for 68.09%of the total number of rodents.Conclusion The annual rodent control plan should be formulated according to the ecological learning ability of the dominant rodent population,the habitat characteristics of rodents and the seasonal fluctuation of rodents in Shenyang.Targeted comprehensive control measures should be carried out.In summer,the prevention and control work should focus on R.norvegicus in urban residential areas and catering industry,which includes removing the suitable habitat of R.norvegicus,cutting off its food source,and using rat poison and rat traps at designated spots;in rural villages,the prevention and control work should be carried out according to the survival habits and characteristics of A.niger and R.norvegicus,which includes cutting off the food source of rodents in rural villages,improving the efficiency of household garbage treatment in rural villages,and carrying out rodent control work regularly,so as to effectively control the density of rodents and reduce the occurrence of rodent-borne diseases.