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The Diphyidae are a family of siphonophores. These are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other. The front one includes a somatocyst (extension of the gastrovascular system), while the hind one does not. The somatocyst often contains an oil droplet for buoyancy control. A nectosac (central cavity with muscular walls) in each nectophore allows the organism to swim efficiently.〔 ==Genera== The World Register of Marine Species includes the following genera in the family:〔 * * ''Chelophyes'' Totton, 1932 * * ''Dimophyes'' Moser, 1925 * * ''Diphyes'' Cuvier, 1817 * * ''Epibulia'' Eschscholtz, 1829 * * ''Eudoxia'' Eschscholtz, 1825 * * ''Eudoxoides'' Huxley, 1859 * * ''Gilia'' Pugh & Pages, 1995 * * ''Lensia'' Totton, 1932 * * ''Muggiaea'' Busch, 1851 * * ''Sulculeolaria'' Blainville, 1830 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「Diphyidae」の詳細全文を読む スポンサード リンク
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