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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 Astrephomene ： ウィキペディア英語版 Astrephomene In taxonomy, ''Astrephomene'' is a genus of green algae, specifically of the Goniaceae.〔See the NCBI (webpage on Astrephomene ). Data extracted from the (【引用サイトリンク】 title=NCBI taxonomy resources )〕 The genus was first described in 1937 by Pocock and named by Pockock in 1953 (Stein 1958). == Description == ''Astrephomene gubernaculifera'' is a colonial, flagellated volvocine green algae. It consists of 16, 32, 64 or 128 cells, 2 to 7 of which are small and oriented such that their flagella form a rudder (Stein 1958). Each cell is surrounded by a gelatinous matrix and contains an eyespot, two flagella and 1-3 contractile vacuoles at the anterior end. ''Astrephomene gubernaculifera'' can reproduce sexually or asexually. During asexual reproduction, the anterior end of all cells of the daughter colony is outside after the first nuclear and cytoplasmic division; this type of asexual reproduction is unique among the colonial volvocine green algae (Pocock 1953). ''Astrephomene gubernaculifera'' has two mating types that reproduce to form zygotes. 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「Astrephomene」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.