Masu salmon redds constructed in a straight-line river channel: a case study in the Akka River, Iwate Prefecture, Japan
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- Kawashima Takuya
- 岩手県内水面水産技術センター
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- Ohno Nobukazu
- 岩手県水産技術センター
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- Yatsuya Miwa
- 国立研究開発法人水産研究・教育機構水産資源研究所さけます部門
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- Sasaki Kei
- 国立研究開発法人水産研究・教育機構水産技術研究所環境・応用部門
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- Hasegawa Koh
- 国立研究開発法人水産研究・教育機構水産資源研究所さけます部門
Bibliographic Information
- Other Title
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- 直線的な河道に形成されるサクラマス産卵床: 岩手県安家川の事例
- チョクセンテキ ナ カドウ ニ ケイセイ サレル サクラマス サンランショウ : イワテケンアンカガワ ノ ジレイ
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Abstract
<p>The distribution patterns of masu salmon redds were surveyed in Akka River, Iwate Prefecture, Japan from 2015 to 2018. Contrary to previous studies on spawning habitat preference of salmonid species, our results show that masu salmon redds tended to be constructed at straight-line stream channel. For the masu salmon, current velocity and water depth at the straight section might be suitable for redd construction in Akka River. In order to enhance fisheries resources through natural reproduction and hatchery programs, understanding the relationship between stream morphology and spawning habitat preference of target species is required for each population.</p>
Journal
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- Japanese Journal of Ichthyology
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Japanese Journal of Ichthyology 69 (1), 109-113, 2022-04-25
The Ichthyological Society of Japan
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Details 詳細情報について
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- CRID
- 1390010488693563776
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- NII Article ID
- 130008161057
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- NII Book ID
- AN00063212
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- ISSN
- 18847374
- 00215090
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- NDL BIB ID
- 032182464
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed