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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 Quagga catshark ： ウィキペディア英語版 Quagga catshark The quagga catshark (''Halaelurus quagga'') is a species of catshark, belonging to the family Scyliorhinidae. A small, slim-bodied shark reaching in length, it has a distinctive color pattern of narrow, dark brown vertical bars, which resemble those of the quagga. Its head is short and flattened, with a pointed snout tip that is not upturned. Little is known of the quagga catshark's natural history, as it is known only from nine specimens caught off southwestern India and eastern Somalia. Inhabiting the offshore waters of continental shelf at depths of or more, it is a bottom-dwelling predator of shrimps. It exhibits an oviparous mode of reproduction, with a record of a female containing eight eggs that were enclosed in brown capsules bearing long tendrils at the corners. The International Union for Conservation of Nature (IUCN) presently lacks sufficient data to assess the conservation status of this species. It is not economically valued but is taken as bycatch. ==Taxonomy== The first specimen of the quagga catshark was a long adult male collected by the paddle steamer RIMS ''Investigator'' from a depth of off the Malabar Coast of India. It was described by British naturalist Alfred William Alcock in ''A Descriptive Catalogue of the Indian Deep-sea Fishes in the Indian Museum'', published in 1899. He assigned the new species to the genus ''Scyllium'' (a synonym of ''Scyliorhinus'') and named it after the quagga (''Equus quagga quagga'') because of their similar color patterns. Later authors moved this species to the genus ''Halaelurus''.〔〔 Only nine quagga catshark specimens have been recorded. In addition to Alcock's type specimen, four males were trawled from off the eastern Somalian coast by the research ship RV ''Anton Bruun'' in 1964.〔 Four more individuals, two male and two female, were found amongst the contents of commercial fishing trawls conducted off Quilon, India in 2010.〔 A male specimen reported from the Gulf of Aden in 1939 was later re-identified as a speckled catshark (''H. boesemani'').〔 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「Quagga catshark」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.