富山湾の湾奥部で成育したアユ稚魚の河川への回遊遡上
書誌事項
- タイトル別名
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- Migration behaviors of sea-run ayu Plecoglossus altivelis (Pisces) in Toyama Bay, Japan.
- トヤマワン ノ ワンオウブ デ セイイク シタ アユ チギョ ノ カセン エ ノ カイユウ ソジョウ
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説明
Juveniles of Ayu Plecoglossus altivelis were distributed from the surf zones to the offshore shallow waters in Toyama Bay, but the range of their occurrence was restricted within ca. 3 km from the coast. Upstream running of the juvenile into the Shou and Jinzu Rivers started in April when the river water temperature reached 10°C, and lasted until late May. The size distributions of the sea-run juveniles were similar between the Shou and Jinzu Rivers. The body size of the early run in early April was larger than that of the late run. This is probably due to accumulation of larger individuals in the estuaries waiting until the riverwater temperature reaches ≥ 10°C. Comparison of condition factors between river-and sea-collected specimens of the same size range revealed that juveniles, especially specimens over 6 cm SL, could grow better in the river than in the sea.
収録刊行物
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- 日本水産学会誌
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日本水産学会誌 68 (4), 554-563, 2002
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390282681389305344
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- NII論文ID
- 110003160606
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- NII書誌ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
- http://id.crossref.org/issn/00215392
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- NDL書誌ID
- 6232386
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
