DISTRIBUTION, ECOLOGY AND RESOURCE CONSERVATION OF THE SPOTTED SEAL IN THE HUANGHAI AND BOHAI SEAS

The Phoca largha is found in the coastal waters of China from the Huanghai Sea and Bohai Sea to the northern part of East China Sea. Its breeding ground is situated in ice packs in the Liaodong Gulf., from about 40°10′ to 40°45′ N, from 121 °15′ to 122°E. At the breeding season, male and female seals in pairs form many family groups. The pup is born with white lanugo fur on ice packs in Liaodong Gulf during a period from January to the middle of February, and usually carried by its mother on her back to run away. However, from February to March, it could be caught around some islands in Bohai Strait. In recent years, these species resources have been reduced rapidly. It must be strengthened to protect the seals from extinction.     

西太平洋斑海豹在黄渤海的分布、生态和资源保护

西太平洋斑海豹主要分布于黄渤海,并达东海北部,其繁殖场在辽东湾40°10'—45'N,121°15'—122°E间的浮冰区,生殖期雌雄成对组成许多“家庭群”,在辽东湾浮冰上产仔,产仔期1—2月中旬,仔兽体被白色绒毛,逃跑时母兽往往背驮仔兽,但2—3月间,在渤海海峡的一些岛屿上也捕获过具有白色胎毛的幼兽。近年来,斑海豹资源已急剧减少,其主要原因为过多的猎捕幼兽,因此必须加强保护。     

中国海洋哺乳动物区系

本文对中国海洋哺乳动物区系进行了初步分析。已知鲸目中须鲸亚目有8种,齿鲸亚目包括淡水产的白鱀豚有23种,鳍脚目有5种,海牛目有1种,总计37种。中国海洋哺乳动物在各个目然海区按种类论,渤海最贫乏,仅有8种,南海最多有26种。大陆沿岸有30种,台湾省有26种。有些种类热带性较强,明显的代表着南部海区海洋哺乳动物的区系特征,一些来自寒海区的冷温种,代表着北部海区海洋哺乳动物的区系特征。     

黄海小鳁鲸生殖习性的研究

自1955年开始,作者对黄海北部捕获的小鳁鲸(Balaenoptera acutorostrata)的生物学特性做了一些调查,通过对陆地鲸体解剖所得胎儿的测定,以及在黄海中部的探捕,结合长期的海上实际观察,对黄海小鳁鲸的生殖习性进行了分析研究,现将结果报道如下。