武陵山地区的淡水软体动物

1988—1989年在我国西南武陵山地区对乌江、清江、澧水及沅江四大水系进行了资源考察。共采集到标本53种,隶属2纲12科27属,其中腹足纲41种,瓣鳃纲12种,内有7个新种(另外发表)。淡水软体动物的区系组成以东洋界种类占优势,有29种,占总数的54.8％;种类组成以沅江水系最多,有44种,其中22种仅采于沅江。田螺属(Viviparus Montfort,1810)的种类首次在东洋界境内被发现。文章对淡水软体动物的资源作了评价,并对寄生虫媒介贝类进行了叙述。

FRESHWATER MOLLUSCS IN WULING MOUNTAIN AREAS, CHINA

In 1988-1989 the investigation on freshwa er molluscs was hold in Wujing, Qingjiang, Li-shui and Yuanjiang, the four river systems in Willing mountain areas southwest China. Among 53 species collected are 41 belonging to gastropoda and 12 belonging to Lamellibranchia. Seven species are found new (in press). Zoogeographically the species of oriental region occupies a dominant position in the area, is 54.8% (29 species) of the total. Yuanjiang river system is found the richest in freshwater molluscs, having 44 species in which 22 are collected nowhere else. The species of Viviparus Montfort, 1810, are firstly reported in oriental region. The paper also makes the evaluation on economic molluscs and the discussion on molluscs that can serve as intermediate host of parasites of animal as well as man.