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Pomacea canaliculata : ウィキペディア英語版 | Pomacea canaliculata
''Pomacea canaliculata'', common name the channeled applesnail, is a species of large freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails. South American in origin, this species is considered to be in the top 100 of the "World's Worst Invasive Alien Species".〔(''100 of the World's Worst Invasive Alien Species''. Global Invasive Species Database http://www.issg.org/database, accessed 27 October 2008. )〕 == Shell description ==
The shells of these applesnails are globular in shape. Normal coloration typically includes bands of brown, black, and yellowish-tan; color patterns are extremely variable. Albino and gold color variations exist.〔Howells, R. Personal communication. Texas Parks and Wildlife Department. In: United States Geological Survey. 2008. ''Pomacea canaliculata''. USGS Nonindigenous Aquatic Species Database, Gainesville, FL. Revision Date: 2/4/2008〕〔 The size of the shell is up to 150 mm in length.〔
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「Pomacea canaliculata」の詳細全文を読む
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