关键词: 板齿鼠种群, 季节变动, 年变动, 鼠疫

Abstract: Objective:To investigate the variation of the population density of Bandicota indica.Methods:On the basis of the field investigation in the flatland areas in Ruili city and Longchuan county from 1988 to 1996 and the related investigation material from other districts in Yunnan province,the variation of the population density of Bandicota indicawas analyzed in this paper.Results:The results revealed that Bandicota indica was comparatively concentrated in the flatland areas with 1 100m of altitude in Ruili and Longchuan,which reflexed a strong characteristics of limited areas and altitude.The seasonal fluctuation of the population density all showed a three peak type in the two flatland areas,the emerged time from January to April,June and from November to December in Ruili.But it's from January to April,August and from November to December in Longchuan.The annual variation of nine years(12 months per year) showed that the constituent of Bandicota indicain the small mammal community was relatively stable in the two areas.Conclusions:Bandicota indicamust be one of the plague host animals.