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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Apophallation ： ウィキペディア英語版 Apophallation Apophallation is the biting off of the penis, known in terrestrial slugs, which are hermaphroditic gastropod mollusks. It has been reported in some species of banana slugs ''Ariolimax'' and in the distantly related ''Deroceras laeve''. In the mating of banana slugs, the penis is inserted into the body of the partner. The penis may become trapped, perhaps because of the action of a special muscle, in which case the penis is gnawed off by either the partner or the owner. No replacement penis grows, but the apophallated slug can mate as a female.〔 It has been proposed that preventing the partner from mating as a male might be adaptive in increasing its allocation of resources to the production of eggs.〔 One paper reports that individuals of ''Deroceras laeve'' sometimes after mating bite off their own penis, which is then eaten by the partner. In this genus, sperm is swapped from penis to penis, so the amputee would not be able to mate successfully even in the female role. == 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「Apophallation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.