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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 Benthoctopus levis ： ウィキペディア英語版 Benthoctopus levis ''Benthoctopus levis'' is a species of octopus in the Octopodidae family.〔Jacob van der Land (2009). (Benthoctopus levis (Hoyle, 1885) ). The World Register of Marine Species. Accessed on 22 August 2010.〕 It was first described by William Evans Hoyle in 1885 in an article in the ''Annals and Magazine of Natural History'' detailing the new species of octopus found on the HMS ''Challenger'' as part of the ''Challenger'' expedition; the type specimen was retrieved from the Southern Ocean.〔 The species is found in subantarctic waters in the Southern Ocean, particularly surrounding Heard Island and Kerguelen Island, but specimens comparable to ''B. levis'' have also been found at the Antarctic Peninsula. It is known to inhabit shallow depths of between . It is predatory, living and feeding in the benthic zone,〔 where it feeds heavily on brittle stars. In a study in which the stomach contents of 70 specimens were examined, around 50 were shown to have fed only on brittle stars. A study on the reproductive strategies of coleoid cephalopods concluded that while "a simultaneous terminal spawning strategy is most likely" for ''B. levis'', "the egg-length frequency graphs and multivariate analysis also suggest a greater variation in egg-lengths which could lead to spawning over an extended period". The study collected five female ''B. levis'' specimens from the Southern Ocean. They weighed from and the mantle length was from .〔 ''B. levis'' is similar in appearance to another species in the same genus, ''Benthoctopus rigbyae''. ''B. rigbyae'' was first described in 2009 based on specimens found in Antarctic trawling surveys near the Antarctic Peninsula, and, while similar in appearance, differs from ''B. levis'' in its arm length, the depth of its interdigital webbing and specific details of its hectocotylus.〔 Further, the species is found in slightly deeper waters, having been recorded at depths of between .〔 ==References== 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「Benthoctopus levis」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.