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lemon shark
The lemon shark (''Negaprion brevirostris'') is a stocky and powerful shark. A member of the family Carcharhinidae, lemon sharks can grow to in length.〔(Lemon Shark ) - SharkSurvivor.com〕 They are often found in shallow subtropical waters and are known to inhabit and return to specific nursery sites for breeding.〔 Often feeding at night, these sharks use electroreceptors to find their main source of prey, fish.〔 Lemon sharks use the many benefits of group living such as enhanced communication, courtship, predatory behavior, and protection.〔 This species of shark is viviparous, and the females are polyandrous and have a biennial reproductive cycle.〔 Lemon sharks are not thought to be a large threat to humans.〔
==Taxonomy==
The lemon shark was first named and described in 1868 by Felipe Poey.〔(【引用サイトリンク】url=http://www.flmnh.ufl.edu/fish/Gallery/Descript/Lemonshark/Lemonshark.html )〕 He originally named it ''Hypoprion brevirostris'', but later renamed it ''Negaprion brevirostris.'' 〔 The lemon shark has also appeared in literature as ''Negaprion fronto'' and ''Carcharias fronto'' (Jordan and Gilbert, 1882), ''Carcharias brevirostris'' (Gunther, 1870), and ''Carcharhinus brevirostris'' (Henshall, 1891).〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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