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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 Catostylidae ： ウィキペディア英語版 Catostylidae Catostylidae is a family of small jellyfish. Members of this family are characterized by their thick, sausage-like oral arms.〔(Wild Fact Sheets )〕 ==Description== Members of the Catostylidae family are small marine jellyfish with domed bells. The eight short oral arms are broad and three-sided. There is a network of branching canals linked with the primary ring canal, but these are not joined to the gastrovascular cavity except through the sixteen or thirty two radial canals. Some of these radial canals do not extend to the edge of the bell. There are eight sense organs, known as rhopalia, which have canals extending to the margin of the bell.〔(Catostylidae )〕 These jellyfish swim in jerks by contracting their circular and radial muscles, which decreases the volume of water enclosed under the bell, before relaxing them again and repeating the sequence. They have no control over the direction of locomotion and drift with the currents and tides.〔(Catostylidae )〕 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「Catostylidae」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.