关键词: 鼠类, 寄生蚤, 种间协调

Abstract: The pattern of interspecific association among fleas on 4 dominant species of rats was studied,the preliminary survey was made in 1986 and 1987 at the suburbs of Duyun,Guizhou Province.The coefficient of association was used in the paper, the result showed that:1.Neopsylla specialis specialis and Leptopsylla segnis on Apodemus chevrieri presented positive association(V=0.74,P<0.01):2.N.s.specialis and Ctenophthalmus eothenomus on Apodemus agrarius presented positive association(V=0.68,P<0.01):3.There was apparently negative association between N.s.specialis and C.eothenomus on Mus pahari(V=0.47,P<0.05 ):4.C.eothenomus and C.breviprojiciens on Eothenomys miletus presented positive association(V=0.40,P<0.05):so did N.s.specialis and C.eothenomus,N.s.specialis and C.breviprojiciens on E. miletus(V=0.6s,P<0.01:V=0.42,P<0.01).