西藏阿里地区啮齿动物及其体外寄生蚤生态调查

Ecological Investigation of the Rodents and Their External Parasitic Fleas in Ali Prefecture of Tibet

1991年至1995年4—8月,对西藏阿里地区的啮齿动物及体外寄生蚤进行调查,结果表明:该地常见啮齿动物1目4科4属5种,数量组成以白尾松田鼠最多(49.0％),其次为高原鼠兔(25.4％),高原兔(17.8％),体外寄生蚤4科8属11种,数量构成以冰武蚤宽指亚种(49.4％)、方指双蚤(36.3％)为优势种,高原兔带蚤最多,带蚤率67.6％,指数3.01。不同生境啮齿动物组成及体外带蚤率、带蚤指数亦不相同,草原灌丛生境中高原兔的带蚤率(85.7％)及指数(4.71)最高。

The rodents and their external parasitic fleas were investigated in Ali prefe-ture of Tibet from April to August in 1991 - 1995. It was demonstrated that the rodents consisted of 5 species belonging to 4 genera ,4 families and 1 order ,Microtus leucurus was suppe-rior in nembers(49. 0%),the second was Ochotona curzoniae(25. 4%)and the third was Lepus oiostolus (17. 8%). The parasitic fleas consisted of 11 species, belonging to 8 genera of 4 familis. Hoplopsyllus glacialis profugus and Amphipsylla quadratedigita were dominated species. The rate and index of the fleas parasited Lepus oiostolus were the highest (67. 60% ,3. 01). The species and quantity of the rodents and their parasitic fleas were different in distinct habitats. The rate and index of the fleas parasited Lepus oiostolus were the highest in grass-landsbush habitat.