粤西森林溪流淡水鱼类区系研究

Study on the freshwater fish fauna of forests streams in the west of Guangdong

调查发现 ,粤西森林溪流淡水鱼类有 5 3种 ,隶属 4目 1 3科 37属 .鲤形目占 6 6 .1 % ,鲇形目占1 3.2 % ,鲈形目占 1 8.9% ,合鳃目占 1 .9% .其中鲤科鱼类占总种类的 4 7.2 % ;可划分为热带平原、江河平原、上第三纪、北方平原、中印山区 5个区系复合体 .其区系组成具有 5个特点 ,与区域地质演变密切相关 .

The investigation on the freshwater fish fauna of forests streams in the west of Guangdong was presented.The results show that the species of the freshwater fish living in the streams of forests Count up to 53 and they belong to 4 orders,13 families and 37 genera.A systematic analysis about this fauna,such as the composition,the characteristics,the division and the evolution of this fawna was also conducted.