| 西江肇庆段鱼苗群落结构组成及其周年变化研究 |
| Structure and Annual Dynamics of the Ichthyoplankton Community in Xijiang River |
| 投稿时间：2009-08-11 修订日期：2009-11-08 |
| DOI： |
| 中文关键词:西江 鱼苗 群落 周年变化 |
| 英文关键词:Xijiang River ichthyoplankton Community Annual variation |
| 基金项目:科技部公益性项目（２００５ＤＩＢ３Ｊ０２３）；广东省自然科学基金项目（５００４１６３）资助。 |
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| 中文摘要: |
| ２００６年１～１２月，对西江肇庆段的鱼苗进行了周年采集，已鉴别的鱼苗４０种（属），隶属于７目、１４科；其主要优势种为鲴类（３３．９％）、广东鲂（２９．１％）、赤眼鳟（１１．６％）、鲮（９．１％）、（６．１％）、鳊（２．９％）；四大家鱼（青鱼、草鱼、鲢、鳙）的比例仅占４．０１％，鱼苗集中出现在４～９月，其它月份鱼苗种类及数量均很少。对比历史资料，西江鱼苗群落结构已有显著性改变，其中四大家鱼资源已严重衰退；应该加强西江四大家鱼产卵场的监测与保护，并在增殖放流中增加其鱼苗比例。分析了西江中２３种常见鱼苗的丰富度与水温、断面流量的相关关系，以期为生态保护和水文调节提供基础性数据。
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| 英文摘要: |
| Based on the survey in Zhaoqing in Xijiang River in 2006，community characteristics and annual variation of ichthyoplankton was studied. 40 species(genera) were identified，which belongs to 7 orders，14 families. The community was dominated by the Xenocypris argentea(33.9%)，Megalobrama hoffmanni(29.1%)，Squaliobarbus curriculus(11.6%)，Cirrhina molitorella ( 9.1%)，Hemiculter Leucisculus ( 6.1%)，Parahrami.s pekinensis ( 2.9 %);Four famous freshwater fishes(grass carp，black carp，silver carp and big head) accounting for on1y 4.01% in quantity. There are obviously change in community of ichthyoplankton，in comparison with historical records. The distributions of ichthyoplankton mainly assemble between May and September, and few were sample between other months. Then the annual variation of ichthyoplankton abundance with hydrographic rhythm was alsodiscussed.
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| 谭细畅,李跃飞,赖子尼,罗建仁,李新辉,林建志,周东华,高翔,苏少芳.2010.西江肇庆段鱼苗群落结构组成及其周年变化研究[J].水生态学杂志,31(5):27-31. |
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