文章摘要
李圣法.太湖敞水区鱼类种间关系现状[J].水产学报,1998,22(1):
太湖敞水区鱼类种间关系现状
PRESENT SITUATION OF INTERSPECIFIC RELATIONSHIP AMONG FISHES IN THE MAIN AREA OF TAIHU LAKE
投稿时间:2014-05-07  修订日期:2014-05-07
DOI:
中文关键词: 太湖 敞水区 鱼类 种间关系
英文关键词: Taihu Lake , Mainarea , Fish , Interspecific relationship
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作者单位地址
李圣法 中国水产科学研究院东海水产研究所 中国水产科学研究院东海水产研究所
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中文摘要:
      太湖敞水区鱼类群落组成,除人工放流的种类外,河湖洄游性鱼类已基本消失,以湖鲚、银鱼、虾类和小型鲤科鱼类种群占绝对优势。8种优势种种间协调系数显示,湖鲚、银鱼类、白虾、似、九州等相互关系较为密切,其中太湖新银鱼和寡齿新银鱼之间除产卵期有先后外,时空分布和食饵对象基本一致。从太湖敞水区鱼类食物关系来看,随着食物链中高层次的掠食性凶猛鱼类减少,有利于被食者种群的发展,但也伴随着它们种间竞争的加剧。 更多还原
英文摘要:
      The composit ion of fish communi ties showed that the migr ation fish species between river and lake was disappeared in the main area of Taihu Lake , except the stocked species .The main dominant species wer e lake anchovy (Coil ia ectenes), Icefishes and smaller Cypr inids .The coef ficient of associat ion be tween 8 dominant species showed that lake anchovy , Icefishes , Palaemon modestus , Toxabramis swinhonis , and Neosalanx ol igodont is have a similar temporal and spa tial dist ribut ions , and similar prey , but the y have diff erent reproduct ion per iod .Generally , loss or r eduction of a pr eda tor will lower the pr edation mor tali ty of its prey , causing an incr ease of prey densi ty and a concomitant incr ease in interspecific compet ition .
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