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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 Paracatenula ： ウィキペディア英語版 Paracatenula ''Paracatenula'' is a genus of millimeter sized free-living marine gutless catenulid flatworms.〔 ''Paracatenula'' is found worldwide in warm temperate to tropical subtidal sediments. They are part of the interstitial meiofauna of sandy sediments. Adult ''Paracatenula'' lack a mouth and a gut and are associated with intracellular symbiotic alphaproteobacteria of the genus ''Cand''. Riegeria.〔〔 The symbionts are housed in bacteriocytes in a specialized organ, the trophosome (Greek. τροφος ''trophos'' ‘food’). The bacteria can make up half of the worms' biomass.〔〔 The benefitial symbiosis with carbon dioxide fixing and sulfur-oxidizing endosymbionts allows the marine flatworm to live in nutrient poor environments. ==Diversity== Five species of ''Paracatenula'' have been described - ''P. erato'', ''P. kalliope'', ''P. polyhymnia'', ''P. urania'' and ''P. galateia'', named after muses and nymphs of the Greek mythology. 〔〔 Several more species have been morphologically and molecularly identified, but are not formally described.〔 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「Paracatenula」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.