中国淡水双壳类特有种的地理分布

通过查阅有关文献整理得出,中国淡水双壳类特有种计有58种,隶属于双壳纲(Bivalvia)2科17属,其中主要是蚌科(Unionidae)的种类(16属57种)。我国淡水双壳类特有种的组成和区系成分,以东洋界华中区的种类占绝对优势,仅有少数种类渗透到古北界;特有种在我国16个省有分布,但主要集中分布于江西、湖南、安徽、浙江、江苏五省。双壳类特有种的形成和保存可能与我国古地理环境及其生活的水域环境有关。

Geographical Distribution of Endemic Species of Chinese Freshwater Bivalves

After consulting relevant materials,58 endemic species of Chinese freshwater bivalves belonging to 17 genera in 2 families were systematically sorted out,most of which belong to the family Unionidae(57 species,16 genera).The endemic species of Chinese freshwater bivalves are dominated by species in central part of China,Oriental realm,with a few species in Palearctic realm.The endemic species spread over 16 provinces,mainly distributed in Jiangxi,Hunan,Anhui,Zhejiang and Jiangsu provinces.The formation and preservation of the endemic species might be attributed to China's ancient geographic environment and the environment of water area they live in.