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Keratella cochlearis : ウィキペディア英語版 | Keratella cochlearis
''Keratella cochlearis'' is a rotifer.〔H. Streble, D. Krauter: ''Das Leben im Wassertropfen. Mikroflora und Mikrofauna des Süßwassers''. Kosmos Verlag, Stuttgart 2006.〕 The planktonic animal occurs worldwide in freshwater and marine habitats. ==Description== ''Keratella cochlearis'' has an oval lorica, a shell-like protective outer cuticle. At the anterior end are three pairs of spines. The central pair curve towards the ventral surface, the next pair diverge slightly and the outer pair converge. There is also a central funnel-shaped mouth and on either side of this are rings of cilia which twirl and help waft food particles into the mouth. They are also used for locomotion. There are two forms of this rotifer; some individuals have a long spine at the posterior end and others do not. Neither form has a foot.〔(【引用サイトリンク】title=''Keratella cochlearis'' (Gosse 1851) )〕
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「Keratella cochlearis」の詳細全文を読む
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