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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 Anostraca ： ウィキペディア英語版 Anostraca Anostraca is one of the four orders of crustaceans in the class Branchiopoda; its members are also known as fairy shrimp. They are usually long (exceptionally up to ). Most species have 20 body segments, bearing 11 pairs of leaf-like ''phyllopodia'' (swimming legs), and the body lacks a carapace. They live in vernal pools and hypersaline lakes across the world, including pools in deserts, in ice-covered mountain lakes and in Antarctica. They swim "upside-down" and feed by filtering organic particles from the water or by scraping algae from surfaces. They are an important food for many birds and fish, and are cultured and harvested for use as fish food. There are 300 species spread across 8 families. ==Description== The body of a fairy shrimp is elongated and divided into segments.〔 The whole animal is typically long, but one species, ''Branchinecta gigas'' does not reach sexual maturity until it reaches long, and can grow to long.〔 The exoskeleton is thin and flexible,〔 and lacks any sign of a carapace. The body can be divided into three distinct parts (tagmata) – head, thorax and abdomen.〔 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「Anostraca」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.