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''Polycheira'' is a genus of holothurians (sea cucumbers) found in tropical Indo-Pacific. A curious pattern of reproduction has been found in ''Polycheira rufescens'', where specimens change their sex from male to female and from female to male in a reproductive season 〔Arakaki,S. et al.,Sex change and spatial distribution pattern in an intertidal holothurian Polycheira rufescens in the reproductive season. Res. Popul. Ecol. 1999, vol. 41, No 3〕 ==Systematics== ''Polycheira'' appear to be closely related to the genus ''Chiridota'' (both belong to the subfamily Chiridotinae).〔Kerr,A.M. Phylogeny of the Apodan Holothurians (Echinodermata) inferred from morphology. Zoological Journal of the Linnean Society (2001), 133〕 The type species of the genus is ''Polycheira rufescens'' (Brandt, 1835). Species include:〔(MarineSpecies.org - Polycheira )〕 *''Polycheira fusca'' *''Polycheira rufescens'' (=''Chirodota rufescens'') *''Polycheira vitiensis'' 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「Polycheira」の詳細全文を読む スポンサード リンク
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