{"created":"2024-02-15T02:19:45.728264+00:00","id":2000171,"links":{},"metadata":{"_buckets":{"deposit":"7d971dee-8492-442c-b849-91a3e118f923"},"_deposit":{"created_by":8,"id":"2000171","owner":"8","owners":[8],"pid":{"revision_id":0,"type":"depid","value":"2000171"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02000171","sets":["15"]},"author_link":["791","425","417"],"control_number":"2000171","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-05-16","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"8","bibliographicNumberOfPages":"12","bibliographicPageEnd":"1300","bibliographicPageStart":"1289","bibliographicVolumeNumber":"9","bibliographic_titles":[{"bibliographic_title":"Canadian Journal of Fisheries and Aquatic Sciences","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Natural mortality rates (M) are poorly quantified and commonly identified as a key source of uncertainty in fish stock assessments. Increasingly, stock assessments account for size- and age-dependence in M instead of using a constant M for all sizes and ages, as has traditionally been the default assumption. Empirical studies show that M is approximately inversely proportional to body length in fish populations, and this generalization has been used together with a von Bertalanffy growth curve to derive an age-dependent M. Here we extend this approach to the three commonly used growth functions of the Richards family (i.e., Logistic, von Bertalanffy, and Gompertz growth models). These models allow flexible production of various growth curves with a sigmoid shape and an upper asymptote, making them useful for displaying diverse growth curves for various long-lived fishes. The influences of growth parameters on predicted M were investigated, and the outcomes were compared among the three growth models. Age-dependent M for blue sharks (Prionace glauca) were estimated as an example.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Canadian Science Publishing","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1139/cjfas-2022-0257","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"ja","subitem_relation_name_text":"水産資源研究所　水産資源研究センター　広域性資源部"}],"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"23234001","subitem_relation_type_select":"Local"}}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"en","subitem_relation_name_text":"Canadian Journal of Fisheries and Aquatic 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