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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 Cumberland Sound beluga ： ウィキペディア英語版 Cumberland Sound beluga The Cumberland Sound belugas are a distinct population of belugas residing in the Cumberland Sound region of the Labrador Sea off the coast of Nunavut, Canada Individuals of this population reside in the sound year-round, congregating in its extreme north exclusively at Clearwater Fjord during the summer for calving. The Cumberland Sound beluga population is considered fairly isolated and genetically distinct from other beluga populations, with a notable number of haplotypes and microsatellite loci not found elsewhere.〔 ==Biology== Adult females and males in the population reach mean lengths of 362 cm (11.9 ft) and 428 cm (14.0 ft) respectively and weigh from 800 to 1000 kg (1750 - 2200 Ibs). The peak breeding season appears to occur in May with calves being born in late July or early August after a gestation period of about 14.5 months. Life expectancy is about 16 years, but Belugas in their late 20s have been recorded; the oldest female and male sampled from the catch in Cumberland Sound to date are 26 and 24 years respectively. Research suggests a low reproductive rate, typical of the K-selected species.〔(【引用サイトリンク】title=Species at Risk Public Registry - Species Profile: Beluga Whale Cumberland Sound population )〕 Belugas occupy mostly the western side of the Cumberland Sound in spring and early autumn. In summer, they are found mainly in Clearwater Fiord and adjacent bays where they are reported to feed on a large diversity of fish and invertebrate species including squid, tube worms, caplin, Greenland cod and Atlantic cod. In late autumn and early winter, belugas move to the centre of the Sound, diving to depths of 300 m or more to feed on deep-water species such as Greenland halibut. Local hunters also report that belugas at the floe-edge in spring prey mainly on Arctic cod and turbot under the ice. In winter, belugas move to the eastern side of the Sound near the mouth, following open water.〔〔 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「Cumberland Sound beluga」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.