黄东海多毛类动物种类组成与优势种分析

摘要

[Objective]Verifying the composition condition of Polychaeta in the Yellow Sea and East China Sea.[Methods]Two samples were collected in every station using 0.1 m2 Gray-O’Hara.The specimens were identified accurately andY=(ni/N)fi was used to get the domi-nant species,whose spatial distribution was analyzed.[Results]In total 32 families and 90 spe-cies of Polychaeta are identified.The dominant species are Notomastus latericeus Sars,1857 and Ninoe palmata Moore,1903,and their spatial distribution does not show obvious regularity.[Conclusion]The species abundance of Polychaeta is rich in the Yellow Sea and East China Sea and the dominant species are changing over time,while the classification needs more attention.%【目的】探明黄东海区域多毛类Polychaeta物种组成状况。【方法】用0．1 m2 Gray-O’Hara箱式采泥器重复采样2次，对获得的多毛类样品进行准确的分类鉴定，采用优势度计算公式：Y＝（ni／N ）fi 统计得出优势种并分析其空间分布状况。【结果】本次调查黄东海共鉴定出多毛类32个科90种，优势种为背蚓虫Notomastus latericeus Sars，1857和掌鳃索沙蚕Ninoe palmata Moore，1903，其分布没有表现出明显的规律性。【结论】黄东海多毛类种类丰富，优势种随时间变化而改变，而分类学研究应引起重视。