摘要
本文根据1973—1990年野外调查资料和文献记录,对甘肃省河西走廊鱼类区系及其演变进行了研究,共收集鱼类标本1000余号,经鉴定为31种,隶属于5目7科22属。土著鱼类仅11种,以鲤科裸鲤属和鳅科高原鳅属为主体,由于生态条件的变化和人工引进外水域的鱼类的增加,其区系组成发生了较大变化,同时,引进鱼类的种群数量在不断增长,而土著鱼类的种群数量日趋减少。
An investigation about fishes of the inland river of Hexi Corridorwas carried out from 1973-1990, with a collection of 31 species about1000 specimen. They were found to belong to 5 orders and 7 families and22 genera. The fauna mainly consists of Gymnocypris and Triplophysa.The fauna composition has greatly changed with the evolufion of ecologicalenvironment and the increase of the introduced fish. The number ofintroduced fish population is increasing but the number of aboriginal fishpopulation has gradually decreased.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1991年第4期141-144,共4页
Journal of Lanzhou University(Natural Sciences)
关键词
鱼类
区系
种群
内陆水域
河西走廊
fish
Hexi Corridor
fauna
population
inland river
