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Characterization of salmon-foraging harbor seals (Phoca vitulina) in the Erimo region, Hokkaido, Japan, using finite mixture models
https://fra.repo.nii.ac.jp/records/2015901
https://fra.repo.nii.ac.jp/records/20159010a0c3364-156d-47f8-a0d7-f25db9cbef47
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
25232004.pdf (827 KB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2026-01-21 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Characterization of salmon-foraging harbor seals (Phoca vitulina) in the Erimo region, Hokkaido, Japan, using finite mixture models | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | bycatch; EM algorithm; fisheries interaction; fishery damage; salmon set net | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| アクセス権 | ||||||||||||||
| アクセス権 | open access | |||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||
| 著者 |
増渕, 隆仁
× 増渕, 隆仁
WEKO
1061
× Kobayashi, Mari
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | The increase in the population of harbor seals (Phoca vitulina) in the Erimo region of Hokkaido, Japan, has coincided with rising fishery conflicts, affecting salmon setnets in particular. While seal-related fishery damage has been reported, quantitative evidence of seal predation on salmon has been lacking. The present study employed a finite mixture model clustering method to analyze seal feeding patterns. This analysis revealed 13 distinct clusters, with one cluster specifically characterized by salmon predation. This cluster consisted primarily of larger individuals who obtained most of their daily energy requirements from salmon. In such an environment, seals may learn of setnet structures and fish aggregation characteristics, potentially increasing their dependence on these artificial structures. However, many seals in the population were not feeding on salmon, and the findings demonstrate that only a specific subset of the population, characterized by larger body size and older age, has developed specialized feeding strategies centered on salmon predation at setnets. This adaptation to setnet environments has significant implications for both fishery management and seal conservation in the region. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : The Journal of Wildlife Management 巻 90, 号 2, p. e70149, 発行日 2025-12-17 |
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| 出版者 | ||||||||||||||
| 出版者 | Wiley | |||||||||||||
| 言語 | en | |||||||||||||
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| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 1937-2817 | |||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 0022-541X | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | 10.1002/jwmg.70149 | |||||||||||||
| 言語 | en | |||||||||||||
| 関連名称 | wiley | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | Local | |||||||||||||
| 関連識別子 | 25232004 | |||||||||||||
| 言語 | ja | |||||||||||||
| 関連名称 | 水産資源研究所 水産資源研究センター 底魚資源部 （長崎） | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1002/jwmg.70149 | |||||||||||||
| 言語 | en | |||||||||||||
| 関連名称 | WILEY online: THE WILDLIFE SOCIETY | |||||||||||||
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| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
