Title: Status of Fishes Distribution and Species Diversity in Ertix River Basin in China
Abstract: The fish species resource was investigated in Ertix river basin in China from 2006 to 2008.The results showed that 36 fish species or subspecies belonging to 6 orders,12 families and 30 genera were collected in Ertix river basin in China.Among the total fishes,23 species or subspecies were native species and the others were introduced species.The distribution of fishes and fish species β diversity were make clearly in the main stream of Ertix river basin and 7 main tributary.The investigation indicated many reasons such as mortal activity,power dam,excessive catch,and so on lead to river fragmentation,separating of fishes migration,diminishing of spawning sites and change of hydrological characteristics.All of these would also caused obvious succession of catch composition,decreasing of fish populations,individual miniaturization of native fishes and exhaustion of fisheries resource.At present Acipenser baeri Brandt and A.ruthenus Linnaeus were facing with danger and Stencdus leucichthys nelma Pallas was facing with extinction.In order to protect fish species diversity and ecological environment in Ertix river basin in China,some applicable countermeasures were put forward.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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Cited By Count: 3
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