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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 Cercopagis pengoi ： ウィキペディア英語版 Cercopagis pengoi ''Cercopagis pengoi'', or the fishhook waterflea, is a species of planktonic cladoceran crustacean that is native in the brackish fringes of the Black Sea and the Caspian Sea.〔(【引用サイトリンク】date=November 28, 2006 )〕 In recent decades it has spread as an invasive species to some freshwater waterways and reservoirs of Eastern Europe and to the brackish Baltic Sea. Further it was introduced in ballast water to the Great Lakes of North America and a number of adjacent lakes, and has become a pest classified among the 100 worst invasive species of the world.〔 ''Cercopagis pengoi'' is a predatory cladoceran and thus a competitor to other planktivorous invertebrates and smaller fishes. On the other hand, it has provided a new food source for planktivorous fishes. It is also a nuisance to fisheries as it tends to clog nets and fishing gear.〔Birnbaum, C. (2006): (''Cercopagis pengoi'' ). NOBANIS – Invasive Alien Species Fact Sheet.〕 ==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「Cercopagis pengoi」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.