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Effects of hypoxia on principal prey and growth of flathead flounder Hippoglossoides dubius in Funka Bay, Japan

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タイトル: Effects of hypoxia on principal prey and growth of flathead flounder Hippoglossoides dubius in Funka Bay, Japan
著者: Kimura, Masafumi 著作を一覧する
Takahashi, Toyomi 著作を一覧する
Takatsu, Tetsuya 著作を一覧する
Nakatani, Toshikuni 著作を一覧する
Maeda, Tatsuaki 著作を一覧する
キーワード: condition factor
feeding
flathead flounder
Funka Bay
growth
Hippoglossoides dubius
hypoxia
ophiuroids
発行日: 2004年
出版者: Japanese Society of Scientific Fisheries
誌名: Fisheries Science
巻: 70
号: 4
開始ページ: 537
終了ページ: 545
出版社 DOI: 10.1111/j.1444-2906.2004.00838.x
抄録: Effects of hypoxia on the principal prey and growth of flathead flounder Hippoglossoides dubius were studied in Funka Bay. Of the three dominant year-classes that occurred in recent years, the 1995 year-class was small in total length at age ≥ 3 and low in condition factor at age ≥ 2. Ophiuroids (almost Ophiura sarsi), which were the dominant prey in the 1980s, were of little importance and instead, crustaceans such as mysids, natant decapods and pelagic amphipods, bivalves and fish were important prey items for H. dubius in 2000-2001. In addition, the feeding intensity of H. dubius in 2000-2001 was lower than that in the 1980s. These facts are closely related to a reduction of prey abundance, particularly ophiuroids. It seems that the hypoxia that occurred in the central part of the bay during the summer and autumn of 1995-1997 caused the poor food supply and low growth rate at ages 2-4 of the 1995 year-class.
Rights: ©2004 公益社団法人日本水産学会 The Japanese Society of Fisheries Science
資料タイプ: article
URI: http://hdl.handle.net/2115/38563
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 高橋 豊美

 

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