An analysis of the rodents surveillance results in Yantai,Shandong Province from 2020 to 2022
Objective To investigate the species composition,density,seasonal fluctuation of rodents in Yantai,and to provide a scientific basis for guiding the prevention and control of rodents and rodent-borne diseases.Methods From 2020 to 2022,three habitat rodent surveillance sites were set up in 13 districts(counties)in Yantai,including urban residential areas,key industries and rural residential areas,and the trap-at-night method was used in the middle of each odd month.The species composition,density and seasonal fluctuation characteristics of rodents were analyzed from 2020 to 2022.The data were processed and analyzed using Excel 2021 and SPSS 26.0,and the Chi-square test was used to compare the rates.Results A total of 183 rodents were captured from 2020 to 2022,and the overall rodent density was 0.17%.The rodent density showed a decreasing trend in the three years,and there was a significant difference in rodent density in different years(χ2=7.106,P=0.029).The rodent densities in the habitats of urban residential areas,key industries and rural residential areas were 0.08%,0.08%and 0.33%,respectively,and there were significant differences in rodent densities in different habitats(χ2=80.943,P＜0.001).The proportions of Rattus norvegicus,Mus musculus,Niviventer confucianus,Apodemus agrarius and R.tanezumiaccounted for 69.95%,19.13%,4.91%,3.28%and 1.09%,respectively.There was no statistically significant differences in the composition ratio of rodent species in different habitats(χ2=10.712,P=0.219).There were significant differences in the composition ratio of rodent species in different years(χ2=29.229,P＜0.001).The seasonal fluctuation of Rattus norvegicus density was unimodal in season,with the peak density in July,and the that of Mus musculus was bimodal in May and September.Conclusion Rattus norvegicus was the dominant rodent species surveillance in Yantai,Shandong Province from 2020 to 2022.Rural residential areas were key areas for rodent prevention and control.In order to achieve the purpose of controlling rodent density and preventing rodent-borne diseases in rural residential areas,it was recommended to adopt comprehensive control measures according to the characteristics of rodent density and seasonal fluctuation.
NETL
NSTL
万方数据
维普
