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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 Difflugia ： ウィキペディア英語版 Difflugia ''Difflugia'' is the largest genus of Arcellinida, one of several groups of Tubulinea within the eukaryote supergroup Amoebozoa. Arcellinida species produce shells or tests from mineral particles or biogeonic elements (e.g. diatom frustules) and are thus commonly referred to as testate amoebae or shelled amoebae. ''Difflugia'' are particularly common in marshes and other freshwater habitats. The particles used to build the shell are collected by the amoeba directly from the environment, or from their prey. During cell division they pass into the daughter cell, where they are assembled in shape and joined by a sheet-like organic cement.〔Ralf Meisterfeld: ''Arcellinida'', In: John J. Lee, Gordon F. Leedale, Phyllis Bradbury (Hrsg.): The Illustrated Guide to the Protozoa, 2nd Edition. Vol. 2, Society of Protozoologists, Lawrence, Kansas 2000, ISBN 1-891276-23-9, pp. 827-860〕 The test has a single terminal opening (the pseudostome). The shape of the shell ranges from spherical to elongated, sometimes with ornamentation such as horns or a collar, sometimes both, as in ''Difflugia corona'' ). ''Difflugia'' use pseudopods to move around and capture their prey as do other amoeboid protists. Most species of Difflugia are heterotrophs, feeding on organic matter or various prey organisms. Some species however contain endo-symbiotic algae and are therefore mixotrophic, i.e. combining autotrophy and heterotrophy,.〔Ralf Meisterfeld: ''Arcellinida'', In: John J. Lee, Gordon F. Leedale, Phyllis Bradbury (Hrsg.): Illustrated Guide to the Protozoa, 2nd Edition. Vol. 2, Society of Protozoologists, Lawrence, Kansas 2000, ISBN 1-891276-23-9, pp. 827-860〕 Molecular phylogenetic studies suggest that the genus ''Difflugia'' is not monophyletic. The definition of the genus is problematic and future research will most likely result in major taxonomic revision of this group. ==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「Difflugia」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.