喜马拉雅山南坡小型兽类体外寄生蚤类群落的研究

１９９２－０５－０８、１９９３－０６－０７和１９９４－０６－０７分别在喜马拉雅山南坡，西藏亚东县、错那县和隆子县捕获小型兽类，采集蚤类标本，共获蚤１８０５只，经鉴定它们隶属于４科２２属４６种。以该地区小型兽类作为研究对象，计算其染蚤指数和蚤类群落相似性指数，并对宿主动物体外寄生蚤群落进行主成分分析。结果表明：宿主动物的生境对其体外寄生蚤群落相似性起决定作用，而宿主动物的分类地位亦有一定的影响。

THE FLEA COMMUNITIES ON THE SMALL MAMMALS IN THE SOUTHERN SLOPE OF THE XIMALAYA MOUNTAIN

The investigation results of the flea indices and similarity indices of flea communities on 8 species of small mammals in the southern part of the Ximalaya Mountain, near the southern border of Qinghai Tibet Plateau, during the period from 1992 to 1994.Altogether 1805 specimens were collected from the small mammals, and they were identified as 45 species and subspecies of fleas, belonging to 4 families, and 22 genera. After calculation of flea indices and similarity indices, PCA was used to analyse flea communities on 8 species of the animal hosts. The result revealed that similarities of flea communties were mainly affected by types of the habitats selected by the host mammals, and by the positions of the hosts in taxonomy,too.