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THE RINGED SEAL AND OTHER PINNIPEDS WANDERING OFF THE COAST OF CHINA

ZHOU Kaiya   

  1. Department of Biology, Nanjing Normal University
  • Online:2011-11-23 Published:2011-11-22

中国沿岸漫游的环海豹及其他鳍脚类

周开亚   

  1. 南京师范大学生物系

Abstract: The ringed seal, Phoca hispida ochotensis, an adult female of 43 kg in weight, and 1.105m in length, was caught on the beach of Ganyu County (34°50′ latitude, 119°10′E longitude), Jiangsu Province on June 6, 1982. The specimen has been well preserved by the Department of Biology, Nanjing Normal University.So far as known,it is the first capture of this species along the Chinese coasts, In addition to the ringed seal,other three species: Steller sea lion, northern fur seal and bearded seal-Eumetopias jubata, Callorhinus ursinus and Erignathus barbatus,were. also found along the Chinese coasts.And a few individuals of the larga seal,Phcoca largha,fiom the Pohai Sea population were caught on the beach of Jiangsu and the mouth of the Yangtze River.The steller sea lion caught on the beach of Lusi (about 32°N latitude), Qidong County, Jiangsu Province in April,1966 was a male of 583kg in weight and 2.85m in length.It set the record of this species being captured at the southermost in the western North Pacific. The only record of the northern fur seal caught along the Chinese coasts has been a female,43kg,1.22m, caught on the beach of Jimo County (about 36°N ]atitvde),Sh.andorg Province in September, 1971.Two bearded seals were caught respectively off Nin-gbo City (about 30°N latitude)and Pingyang County (about 27°N latitude) of Zhejiang Province.The Pingyang specimen collected in July, 1971, a male of 71 kg in weight and 1.76m in length is the bearded seal caught at the southermost along the coasts of Asian seas.The larga seals of the Pohai Sea population is a far south breeding group in the world.After the breeding in January-February, they start to disperse along the coast of Pohai Sea,March-May.During this period a few individuals were found on or off the shore of Jiangsu and Fujian Provinces. On March 5,1985, an adult male of 42kg in weight and 1.3m in length was found on the beach of Ganyu County,Jiangsu Province.The capture of a young male was recorded at Liuduo,Binhai County (about 34°N latitude), Jiangsu Province in April, 1966. Another young female was caught at the mouth of the Yangtze River in May 1955.The known record of the southermost capture was off the coast of Pingtan County(about 25°N latitude),Fujian Province.Besides, a male larga seal ascending the Tumenjiang River was caught, in April 1965,30 km away from the Japan Sea.

Key words: Ringed seal, Phoca hispida ochotensis Pallas, Pinnipeds, Chinese coastal waters

摘要: 鳍脚类主要分布在寒冷水域。我国海域的水温相对较高,已发现的鳍脚类种类和数量都很少,除黄海和渤海的斑海豹外,其他都是离开了正常分布区的漫游个体。对斑海豹Phoca largha已有过几篇报道(汪克贤,1955;李秀朋,1965;李荣光,1980;王者茂,1984)。对另3种鳍脚类只有零星记录(王者茂,1973;诸葛阳,1982;黄圮,1984)。本文首次报道漫游到中国近海的环海豹 Phoca hispida ochotensis Pallas,同时对中国沿岸斑海豹及另3种鳍脚类的漫游个体作简要介绍。

关键词: 环海豹, 鳍脚类, 中国沿岸