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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 Pennella balaenopterae ： ウィキペディア英語版 Pennella balaenopterae ''Pennella balaenopterae'' is a large ectoparasitic copepod specialising in parasitising marine mammals. It is the largest member of the genus ''Pennella'', the other species of which are parasites of larger marine fish. ==Description== ''P. balaenopterae'' is one of the largest species of copepods within the family Pennellidae, reaching up to in length. The adult females are characterised by a loss of external segmentation and absorption of swimming legs. ''Pennella'' species are recognised by the branched outgrowths on the posterior part of their abdomens. The mandibles form a sucking tube for the mouth through which the species feed and adults also have a pair of segmented sensory antennae. Five pairs of thoracic legs are found in the species, which are more modified in females than males. After attaching to the host the parasite undergoes diphasic growth. The first phase of this type of growth occurs in the copepod's anterior body portion. During the second phase of growth, the posterior portion which is where the reproductive organs are, begins to grow extremely rapidly, and is soon larger than the anterior portion.〔 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「Pennella balaenopterae」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.