A study of the population distribution and density changes of mouse-like rodents in the Chongqing section of the Three Gorges Reservoir Area,China

HE Ya-ming, MAO De-qiang, JI Heng-qing, LI Hong, ZHANG Chun-hua, XU Jie, LYU Xiao-yan

doi:10.11853/j.issn.1003.8280.2020.05.016

Chinese Journal of Vector Biology and Control >

2020 , Vol. 31 >Issue 5: 580 - 586

DOI: https://doi.org/10.11853/j.issn.1003.8280.2020.05.016

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A study of the population distribution and density changes of mouse-like rodents in the Chongqing section of the Three Gorges Reservoir Area,China

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Chongqing Center for Disease Control and Prevention, Chongqing 400042, China

Received date: 2020-04-02

Online published: 2020-10-20

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Abstract

Objective To investigate the population distribution and density changes of mouse-like rodents in the Chongqing section of the Three Gorges Reservoir Area, China, and analyze the ecological influence of the Three Gorges Project on rodents, for an understanding of the potential spreading risk of rodent-borne diseases. Methods The surveillance data of mouse-like rodents in the Chongqing section of the Three Gorges Reservoir Area from 2005 to 2018 were collected for descriptive and linear regression analyses by Excel 2010 and SPSS 25.0 softwares, respectively. Results Thirteen species of mouse-like rodents were found in the Chongqing section of the Three Gorges Reservoir Area, with a total density of 1.68%. In residential areas, the density was 2.01%, and the dominant species were Rattus tanezumi,R. norvegicus, and Mus musculus. In cropland, the density was 1.37%, and the dominant species were Insectivora, R. tanezumi, and R. norvegicus. The density of mouse-like rodents in cropland showed a decreasing trend along the flow of the Yangtze river. The total density tended to increase with years, and reached its peak in March throughout the year. The density of R. tanezumi increased significantly with years, especially in residential areas. Conclusion The population distribution and density of mouse-like rodents have changed significantly after the completion of the Three Gorges Reservoir, and there is a risk of occurrence and spread of rodent-borne diseases. Surveillance and control of mouse-like rodents should be strengthened.

Key words： Three Gorges Reservoir Area; Mouse-like rodent; Population; Density

Cite this article

HE Ya-ming, MAO De-qiang, JI Heng-qing, LI Hong, ZHANG Chun-hua, XU Jie, LYU Xiao-yan . A study of the population distribution and density changes of mouse-like rodents in the Chongqing section of the Three Gorges Reservoir Area,China[J]. Chinese Journal of Vector Biology and Control, 2020 , 31(5) : 580 -586 . DOI: 10.11853/j.issn.1003.8280.2020.05.016

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