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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 Largetooth cookiecutter shark ： ウィキペディア英語版 Largetooth cookiecutter shark The largetooth cookiecutter shark (''Isistius plutodus'') is a rare species of dogfish shark in the family Dalatiidae, reported from depths of at scattered locations in the Atlantic and Pacific Oceans. As its common name suggests, it is similar in appearance to the cookiecutter shark (''I. brasiliensis'') but has much larger lower teeth. Most individuals also lack the dark "collar" of ''I. brasiliensis''. This species reaches a maximum known length of . The largetooth cookiecutter shark feeds by gouging out chunks of flesh from larger animals, including bony fishes, sharks, and marine mammals, and is able to take larger bites than ''I. brasiliensis''. Little is known of its life history; it is thought to be a weaker swimmer than ''I. brasiliensis'', and is presumably aplacental viviparous like the rest of its family. This shark is an infrequent bycatch of commercial trawl and longline fisheries, but is not thought to be much threatened by these activities. ==Taxonomy== The largetooth cookiecutter shark was originally described by Jack Garrick and Stewart Springer, in a 1964 issue of the scientific journal ''Copeia''. Their description was based on a long adult female caught in a midwater trawl in the Gulf of Mexico, some south of Dauphin Island, Alabama. The specific epithet ''plutodus'' is derived from the Greek ''ploutos'' ("wealth" or "abundance") and ''odous'' ("tooth").〔 This species may also be referred to as the bigtooth or longtooth cookiecutter shark, or the Gulf dogfish.〔 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「Largetooth cookiecutter shark」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.