中国南沙群岛的双壳纲贝类

Bivalvia (Mollusca) of Nansha Islands, China

报道了中国南沙群岛的双壳纲贝类 14 1种 ,分隶于 5亚纲 8目 36科 77属。从种类的组成中 ,帘蛤科有 18种 ,蚶科 15种 ,扇贝科 11种 ,鸟蛤科 10种 ,锉蛤科 8种 ,贻贝科、海菊蛤科和樱蛤科各 7种 ,砗磲科 6种 ,其他各科的种类均在 5种以内。按种的性质而论 ,大多数属于和珊瑚礁有密切联系的热带种或亚热带种 ,区系性质为印度—西太平洋区的印尼—马来亚区。

This paper deals with Bivalvia (Mollusca) collected on the Nansha Islands from March to June 1999 by Zhanjiang Ocean University. 141 species belonging to 5 subclass 8 orders 36 families 77 genera are identified. In terms of species compostion,Veneridae has 18 species;Arcidae 15 species;Pectinidae 11 species; Cardiidae 10 species;Limidae 8 species;Mytilidae 7 species;Spondylidae 7 species;Tellinidae 7 species.Each family of the rest subclass contains less than 5 species respectively.According to the resemblance of the components, the species from Nansha Islands belong to the tropical Indo-Malayan subregion, and most of the species live on coral reefs.