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Aporrhaidae
Aporrhaidae, common name pelican's foot snails, is a taxonomic family of sea snails. The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005〔Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. ISBN 3-925919-72-4. ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278〕 categorizes Aporrhaidae as marine gastropod mollusks in the clade Littorinimorpha. Aporrhaidae are commercially important, especially in traditional fisheries.〔http://www.sportesport.it/shellsGA18.htm〕 ==Description== Aporrhaidae have a large lip with finger-like extensions, and a small operculum. They do not have movable eyes. Instead, their eyes are fixed at the base of each tentacle.〔http://shells.tricity.wsu.edu/ArcherdShellCollection/Gastropoda/Aporrhaidae.html〕 The mollusk has one narrow foot, which renders its motion interrupted as the foot must raise the shell a tiny bit in each single movement, simultaneously pushing it forward. The motion must be repeated again and again for the mollusk to travel.〔http://www.treknature.com/gallery/photo154498.htm〕
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「Aporrhaidae」の詳細全文を読む
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