越南沿海的双壳纲软体动物

报道了越南沿海的双壳纲软体动物 32 0种 ,隶属 3亚纲、6目、2 6总科、4 1科、1 4 8属。从种类的组成中 ,帘蛤科有 5 7种 ,蚶科 32种 ,樱蛤科 2 9种 ,贻贝科 2 5种 ,鸟蛤科 1 6种 ,牡蛎科 1 4种 ,蛤蜊科 1 3种 ,珍珠贝科和扇贝科各 1 2种 ,紫云蛤科 1 1种 ,竹蛏科 1 0种 ,其他各科的种类均在 7种以内。按种的性质而论 ,越南沿海主要是由热带种和亚热带种类组成 ,还有与珊瑚礁紧密联系的热带种。就越南沿海双壳纲软体动物分类区系而论 ,应属印度—西太平洋区的印尼—马来亚区。

Studies on the Bivalvia (Mollusca) of the Vietnam Coast

This paper is a systematic report of the Bivalvia (Mollusca) of fhe Vietnam coast, including a total of 320 species belonging to 3 subclass,6 orders,26 superfamilies, 41 families and 148 genera are recorded. In terms of species composition, Veneridae has 57 species; Arcidae 32 species; Tellinidae 29 species; Mytilidae 25 species; Cardiidae 16 species; Ostreidae 14 species; Mactridae 13 species; Pteriidae 12 species; Pectinidae 12 species; Psammobiidae 11 species; Solenidae 10 species. Each family of the rest subclass contains less than 7 species respectively. According to the characteristics of the Bivalvia, the Bivalvia of the Vietnam coast is mainly composed of tropical and subtropical species. Some of these have intimate relationship to coral reefs. Considering classification of Bivalvia fauna of Vietnam coast, the fauna should belong to the Indo-Malayan subregion under the Indo-west Pacific region.