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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 Australian swellshark ： ウィキペディア英語版 Australian swellshark :''Not to be confused with the draughtsboard shark, ''Cephaloscyllium isabellum'', of New Zealand.'' The Australian swellshark or draughtboard shark (''Cephaloscyllium laticeps'') is a species of catshark, and part of the family Scyliorhinidae, endemic to southern Australia. This bottom-dwelling species can be found on the continental shelf down to a depth of . Usually measuring long, it is a stout-bodied, broad-headed shark with a short tail and a first dorsal fin much larger than the second. It can be identified by its variegated dorsal coloration of brown or gray patches and numerous spots. Australian swellsharks are sedentary and mainly nocturnal, with most individuals remaining within the same local area throughout the year. It feeds on small crustaceans, cephalopods, and fishes. When threatened, it responds by rapidly taking in water or air to inflate its body, hence the name "swellshark". This shark is oviparous and females lay pairs of distinctively ridged egg capsules at 20–30 day intervals. The eggs hatch after 11–12 months. Harmless and of little commercial interest, many Australian swellsharks are caught incidentally in gillnets and bottom trawls but usually survive to be released because of their extreme hardiness. As a result, the International Union for Conservation of Nature (IUCN) has assessed this species as of Least Concern. ==Taxonomy== The first scientific description of the Australian swellshark, as ''Scyllium laticeps'', was published in 1853 by French zoologist Auguste Duméril, in the scientific journal ''Revue et Magasin de Zoologie''. The type specimen was a long male caught off Tasmania.〔 The specific epithet ''laticeps'' is derived from the Latin ''latus'', meaning "broad", with the suffix ''ceps'', meaning "head".〔Bester, C. (Biological Profiles: Australian Swellshark ). Florida Museum of Natural History Ichthyology Department. Retrieved on 7 September 2009.〕 Other common names for this species include flopguts (a reference to its ability to inflate),〔 Isabell's swell shark, nutcracker shark, rock shark, sleepy Joe, and spotted swellshark. This species is almost identical to the draughtsboard shark (''C. isabellum'') of New Zealand; the two species differ in coloration and the form of their egg cases (ridged in ''C. laticeps'' versus smooth in ''C. isabellum'').〔 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「Australian swellshark」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.