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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Narrow-ridged finless porpoise ： ウィキペディア英語版 Narrow-ridged finless porpoise The narrow-ridged finless porpoise, or Yangtze finless porpoise, is a newly accepted species, by the International Union for Conservation of Nature (IUCN), of porpoise endemic to the western Yangtze river in China. After the extinction of the Yangtze river dolphin and the rapid decreasing of population, the Chinese government has given this species the utmost conservation status of ''National First Grade Key Protected Wild Animal'' to ensure its survival. Global conservation agencies and charities, such as the World Wildlife Fund and IUCN, have been collaborating with the Chinese government to ensure the survival of the species. ==Distribution== The Narrow-ridged finless porpoise is found exclusively in the western Yangtze river. It is the only known exclusively freshwater species of porpoise. However, due to development of the river, they are restricted to the main river channel and its two largest appended lakes, Poyang and Dongting Lake. There are two species of finless porpoise, and both inhabit the coastal areas off mainland China, the Penghu Islands, and coastal Vietnam, including Halong Bay. The Matsu Islands are thought to be their northern limit, and the local population in this area is physically smaller than the Indo-pacific finless porpoise. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Narrow-ridged finless porpoise」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.