摘要
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(Zacco platypus)、黑尾(Hemiculer tchangi)、鲇(Silurus asotus)、鲫(Carassius aura-tus)、鲤(Cyprinus carpio)、蒙古鲌(Culter mongolicus mongolicus)、翘嘴鲌(Culter ilishaeformis)、瓦氏黄颡鱼(Pel-teobagrus 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 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,Culter mongolicus mongolicus,Culter ilishaeformis,Pelteobagrus vachelli and Pelteobagrus 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.
出处
《淡水渔业》
CSCD
北大核心
2011年第6期37-42,共6页
Freshwater Fisheries
基金
公益性行业(农业)科研专项经费(200903048-08)
中央高校基本科研业务费专项资金项目(XDJK2009C196)
关键词
三峡库区
小江
鱼类资源
Three gorge reservoir
Xiaojiang river
fishery resources
