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三峡库区蓄水后小江鱼类资源现状

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2010年3-12月对小江的鱼类资源进行了调查.7个采样点共采集鱼类标本1701尾,隶属于6目9科47属56种,其中小江汉丰湖坝上水域采集鱼类28种,坝下水域采集鱼类42种.鲤形目和鲇形目分别占种总数的69.5%和12.5%.宽鳍(鲻)(Zaco platypus)、黑尾(鳖)(Hemiculer tchangi)、鲇(Silurus asotus)、鲫(Carassius auratus)、鲤(Cyprinus carpio)、蒙古鲌(Culter mongolicus mongolicus)、翘嘴鲌(Culter i1lishaeformis)、瓦氏黄颡鱼(Pelteobagrus vachelli)及光泽黄颡鱼(Pelteobagrus nitidus)等为小江的主要经济鱼类.调查表明:小江渔获物种类数以春季最高;坝上水域渔获物种类组成季节性变化幅度大于坝下水域;坝下水域鱼类丰富度高于坝上水域,但与库区其它支流相比,小江渔获物丰富度较低.
The current situation of fishery resources in the Xiaojiang River of the Three gorge reservoir
The fishery resources in Xiaojiang River were investigated from March to December 2010. The results showed that 1701 fish specimens which belonged to 6 orders, 9 families, 47 genus and 56 species were obtained. Of which 28 and 42 species were collected from upstream and downstream of the Hanfeng Lake, respectively. Accordingly, Cypriniformes and Siluriformes accounted for 69. 5% and 12. 5% of the total species, respectively. In addition, the data indicated that Zacco platypus, Hemiculer tchangi, Silurus asotus, Carassius auratus, Cyprinus carpio, Culler mongolicus mongolicus, Culter Uishaefonrds, Pelteobagrus vachelli and Pelteobagnu nitidus were the dominant economic fishes in the Xiaojiang River. In summary, the species number of fish captures possessed the highest index in spring, and the fish composition in the upstream of the Hanfeng Lake showed greater seasonal changes than that in the downstream, while displayed a contrary result in the aspect of fish richness. Moreover, the richness of fish captures in Xiaojiang River was lower than that in other tributaries of the Three Gorges Reservoir.

Three gorge reservoirXiaojiang riverfishery resources

三峡库区 小江 鱼类资源

公益性行业(农业)科研专项经费中央高校基本科研业务费专项资金项目

200903048-08XDJK2009C196

2011

淡水渔业
中国水产学会 中国水产科学研究院长江水产研究所 中国水产科学研究院淡水渔业研究中心

淡水渔业

CSTPCDCSCD北大核心
影响因子:0.776
ISSN:1000-6907
年,卷(期):2011.41(6)
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