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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 Alosa kessleri ： ウィキペディア英語版 Alosa kessleri ''Alosa kessleri'', also referred to as the Caspian anadromous shad, the blackback, or the black-spined herring, is a species of clupeid fish. It is one of the several species of shad endemic to the Caspian Sea basin. This is an anadromous species which ascends from the Caspian to the Volga river up to the Volgograd to spawn. Before the construction of th Volgograd dam it migrated up to the Kama and Oka tributaries. Few fish enter the Terek and Ural Rivers.〔 While the migration upstream is broken, it seems the fish have found new breeding grounds south of the dam, and the population is now abundant.〔Freyhof J, Kottelat M (2008) (''Alosa kessleri'' ) The IUCN Red List of Threatened Species v 2014.3〕 The species may be threatened by commercial and illegal fishing in the Caspian Sea and at the mouth of the Volga during the migration, though.〔 == See also == * ''Alosa volgensis'' 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「Alosa kessleri」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.