【摘要】 <正> 渤海是我国北方的一个内海,面积大约为97,000平方公里,水浅,平均深度仅26米。因受大陆气候影响较为剧烈,并接纳河川淡水的流入,故盐度低(28—31‰),水温的季节变化幅度大。沿海滩涂广阔,有很多可供贝类养殖的良好场所。搞清这一海区贝类的种类组成及分布规律等,可为研究我国的贝类区系区划以及开发、利用贝类资源提供必要的参考资料。作者多年来带领学生在这一海区进行海滨无脊椎动物实习,搜集了一些贝类标本,1984年5—7月又在整个渤海沿岸选择了大连、金州、交流岛、将军石、鲅鱼圈、营口、塔山、兴城、前所、北戴河、歧口、下营、黄山馆、龙口、蓬莱、长山岛等16个点进行了集中的调查。现仅将双壳类和腹足类报告如下。1 种类组成及分布更多还原

【Abstract】 167 species of mollusca of the Bohai sea are reported in the present paper.78 species of them are Bivalves(belonging to 27 families,52 genus),87 species are Gastropoda(belonging to 35 families,67 genus). The molluscan fauna of the Bohai may be divided into the following three groups,temperate species(77 species,about 45.8% of the total),warm—water species distributed from the South China Sea to the Bohai(87 species,about 52.4% of the tot al)and tropical species(3 species,about 1.8% of the total.So, warm-water species are the main part of this sea area,temperate species are the secodd. Among the mollusca of the Bohai,some are belong to larger families,such as Veneridae(12 species),Arcidae,Tellinidae,Sol- enidae,Naticidae(7 species each),Mytilidae,Ostridae,Potamid- idae(6 species each),Mactridae(5 species),Most species of these families are economic ones.更多还原