{"created":"2024-04-22T04:01:24.129213+00:00","id":2002171,"links":{},"metadata":{"_buckets":{"deposit":"1656ae2a-31cf-43ce-adf9-a31328be9e4f"},"_deposit":{"created_by":10,"id":"2002171","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2002171"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02002171","sets":["12:14:1716951513399"]},"author_link":[],"control_number":"2002171","item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001-03","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"29","bibliographicPageEnd":"111","bibliographicPageStart":"83","bibliographicVolumeNumber":"38","bibliographic_titles":[{"bibliographic_title":"遠洋水産研究所研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of National Research Institute of Far Seas Fisheries","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Japanese official statistics do not have a specific species category corresponding to Pacific bluefin tuna Thunnus orientalis, and only have two categories which include Pacific bluefin tuna together with other Thunnus species. The annual catch in weight and catch at age in number of bluefin tuna in the whole Pacific Ocean during 47 years from 1951 to 1997 were estimated in this study. Catch of bluefin tuna was extracted from the statistics based on the fishing methods and areas. The estimation also relied on detailed information on catch and landing of bluefin tuna in recent years obtained at various fish markets. Among total catch in the Pacific Ocean, Japanese catch was dominant (73% in total weight and 81% in total number) followed by catches by the USA and Mexico (25% in total weight and 19% in total number). Young fish of age 0-2 had occupied 93% of total catch in number since the 1950s to the 1990s. Average proportion of catch in weight by fishing method within the Japanese catch were 46% by purse seine, 14% by trolling, 14% by set net, 12% by longline, 8% by pole-and-line and 2% by driftnet. Catch in weight by purse seine has been the largest for all years observed and its proportion increased in the 1990s due to significant increase of catches of young fish in the East China Sea. Catch proportion in number by purse seine was also the largest for fish older than age 2 in all years as well as for age 1 fish in the 1990s. Age 0 fish was mainly caught by trolling","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"遠洋水産研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"The National Research Institute of Far Seas Fisheries","subitem_publisher_language":"en"}]},"item_10002_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"enyo_k_38-83","subitem_relation_type_select":"Local"}}]},"item_10002_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"日本農学文献記事索引 （AgriKnowledge）"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://agriknowledge.affrc.go.jp/RN/2010622406","subitem_relation_type_select":"URI"}}]},"item_10002_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00025949","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0386-7285","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"伊藤, 智幸","creatorNameLang":"ja"},{"creatorName":"イトウ, トモユキ","creatorNameLang":"ja-Kana"},{"creatorName":"Itoh, Tomoyuki","creatorNameLang":"en"}],"familyNames":[{"familyName":"伊藤","familyNameLang":"ja"},{"familyName":"イトウ","familyNameLang":"ja-Kana"},{"familyName":"Itoh","familyNameLang":"en"}],"givenNames":[{"givenName":"智幸","givenNameLang":"ja"},{"givenName":"トモユキ","givenNameLang":"ja-Kana"},{"givenName":"Tomoyuki","givenNameLang":"en"}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Pacific bluefin tuna; Thunnus orientalis; catch at age; Japanese fishery","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"太平洋全体におけるクロマグロの漁獲量，年齢別漁獲尾数の推定","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"太平洋全体におけるクロマグロの漁獲量，年齢別漁獲尾数の推定","subitem_title_language":"ja"},{"subitem_title":"Estimation of Total Catch in Weight and Catch-at-Age in Number of Bluefin Tuna Thunnus orientalis in the Whole Pacific Ocean","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"10","path":["1716951513399"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-04-22"},"publish_date":"2024-04-22","publish_status":"0","recid":"2002171","relation_version_is_last":true,"title":["太平洋全体におけるクロマグロの漁獲量，年齢別漁獲尾数の推定"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-11-26T05:34:16.569163+00:00"}