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''Stenella'' is a genus of aquatic mammals in Delphinidae, the family informally known as the oceanic dolphins. Currently, five species are recognised in this genus:〔 *Pantropical spotted dolphin, ''S. attenuata'' *Atlantic spotted dolphin, ''S. frontalis'' *Spinner dolphin, ''S. longirostris'' *Clymene dolphin, ''S. clymene'' *Striped dolphin, ''S. coeruleoalba'' The common name for species in this genus is the "spotted dolphins" or the "bridled dolphins".〔〔 They are found in temperate and tropical seas all around the world.〔〔 Individuals of several species begin their lives spotless and become steadily more covered in darker spots as they get older.〔〔 The genus name comes from the Greek ''stenos'' meaning narrow.〔〔 It was coined by John Gray in 1866 when he intended it as a subgenus of ''Steno''.〔 Modern taxonomists recognise two genera.〔〔 The clymene dolphin (''S. clymene'') is the only confirmed case of hybrid speciation in marine mammals, descending from the spinner dolphin (''S. longirostris'') and the striped dolphin (''S. coeruleoalba'').〔http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0083645〕 ==References== 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「Stenella」の詳細全文を読む スポンサード リンク
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