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Age and growth estimated by Bayesian methods for largescale blackfish Girella punctata in the southwestern Sea of Japan
https://fra.repo.nii.ac.jp/records/2015900
https://fra.repo.nii.ac.jp/records/20159003e0e2175-3c58-42db-9835-4de2b0806325
| 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 | Age and growth estimated by Bayesian methods for largescale blackfish Girella punctata in the southwestern Sea of Japan | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Growth curve; Back-calculation; Otolith aging; Bayesian hierarchical model; Size-selective mortality; Girellidae | |||||||||||||
| 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
× Kawano, Mitsuhisa
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | This study presents a comprehensive re-evaluation of growth patterns in largescale blackfish (Girella punctata) using otolith cross-sections and compares conventional and Bayesian analytical approaches. Previous growth studies relied on scale-based age determination, which underestimates maximum age and shows poor model fitting for older individuals. We analyzed 425 specimens collected between 2021 and 2022 from the southwestern Sea of Japan. Using otolith cross-sections, we documented individuals up to 23 years old—nearly three times the maximum age reported in previous scale-based studies. Age determination confirmed annual ring formation in May through marginal increment analysis. We implemented von Bertalanffy and Richards growth models using JAGS, and conducted back-calculation analyses using Bayesian hierarchical methods. The Richards model provided better fit than the von Bertalanffy model, estimating higher L∞ values, though both conventional approaches demonstrated poor fitting for individuals exceeding 400 mm FL. Back-calculation analyses revealed that excluding younger age classes improved growth estimates, with significant changes observed when restricting data to ages ≥ 5 for females and ≥ 3 for males, suggesting timing-specific shifts in energy allocation between somatic growth and reproduction. Size-selective mortality and fishing-induced selection likely bias our understanding of "natural" growth patterns, as faster-growing individuals showed differential survival. A methodological concern is that linear otolith measurements may underestimate growth in older specimens due to curvilinear growth trajectories. While the Bayesian hierarchical approach provided insights into individual growth variation and encompassed larger individuals, results primarily reflect faster-growing survivors rather than average population growth. Our findings demonstrate the importance of combining improved age determination methods with appropriate statistical approaches, while highlighting the need for targeted sampling of larger individuals and consideration of gear selectivity for robust stock assessment of this commercially important species. | |||||||||||||
| 言語 | en | |||||||||||||
| 内容記述 | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | Complimentary access | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : Regional Studies in Marine Science 巻 93, p. 104639, 発行日 2026-01 |
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| 出版者 | ||||||||||||||
| 出版者 | Elsevier | |||||||||||||
| 言語 | en | |||||||||||||
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| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 2352-4855 | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | 10.1016/j.rsma.2025.104639 | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | Local | |||||||||||||
| 関連識別子 | 25232003 | |||||||||||||
| 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/10.1016/j.rsma.2025.104639 | |||||||||||||
| 著者版フラグ | ||||||||||||||
| 出版タイプ | NA | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_be7fb7dd8ff6fe43 | |||||||||||||
