{"created":"2024-06-10T08:51:57.163736+00:00","id":2007365,"links":{},"metadata":{"_buckets":{"deposit":"e2526460-b303-4142-8847-a42074ae40a8"},"_deposit":{"created_by":10,"id":"2007365","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2007365"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02007365","sets":["12:14:1716950799012"]},"author_link":[],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1990-03","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"tnf_k_52_1","bibliographicNumberOfPages":"7","bibliographicPageEnd":"7","bibliographicPageStart":"1","bibliographicVolumeNumber":"52","bibliographic_titles":[{"bibliographic_title":"東北区水産研究所研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of Tohoku National Fisheries Researh Institute","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Biological characteristics of anadromous masu salmon collected in the Kitakami River System and nearby rivers were investigated based on body size, gonad weight, egg size and scale patterns. The study was supplemented with additional information from fishermen and anglers. Upstream migration occurs during the period from February to July and occasionally in September, peaking between March and June. This fairly long upstream migration season is the same as in other rivers on Honshu. The fork length of masu salmon caught in the rivers was 53.9± 3.8 cm and age was estimated at two years old (including more than one year of freshwater life) based on scale readings. Spawning starts in September and continue until November. 62 out of 63 individuals were female and the estimated fecundity per female was 3895±915. The fork lengths during the downstream migration (mainly march to April) and first annulus formation (October) were estimated at 13.9±2.0 cm and 11.8±1.6 cm, respectively, based on scale patterns and the relation between scale radius and fork length.","subitem_description_language":"en","subitem_description_type":"Abstract"},{"subitem_description":"1984年から1988年の間に北上川水系および近辺の河川(吉田川,小泉川,大川)で漁獲された標本の測定結果,鱗相の観察結果,聞き取り調査の結果を総合し溯上したサクラマスの生物学的特性を整理した.溯上時期は2~7月および9月で盛期は3~6月であり,本州の他の地方と同様長期にわたっている,溯上直後における尾叉長は53.9±3.8cm,体重は2160±503gであり,北海道産のものより大型である。溯上魚の性別は調査した63尾中,雄1尾·雌62尾であった.産卵期は9~11月と考えられる.卵巣重量は6月の溯上直後の個体で50.39±19.12g,産卵期の11月の個体で398±107gであった.孕卵数は3895±915個であり,これはサクラマスの孕卵数としては最大級の値である.鱗相から推定される形質では年齢が32(N=11),降海時期の尾叉長が13.9±2.0cm,年齢表示形成時期(10月)の尾叉長が11.8±1.6cmであった.","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東北海区水産研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"Tohoku National Fisheries Researh Institute","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":"tnf_k_52_1","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_language":"ja","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/2010460869","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":"AN00167637","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0049-402X","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":"木曾, 克裕","creatorNameLang":"ja"}],"familyNames":[{"familyName":"木曾","familyNameLang":"ja"}],"givenNames":[{"givenName":"克裕","givenNameLang":"ja"}]},{"creatorNames":[{"creatorName":"笠原, 恵介","creatorNameLang":"ja"}],"familyNames":[{"familyName":"笠原","familyNameLang":"ja"}],"givenNames":[{"givenName":"恵介","givenNameLang":"ja"}]}]},"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":"北上川水系およびその付近の河川に溯上するサクラマスの生物学的特徴","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"北上川水系およびその付近の河川に溯上するサクラマスの生物学的特徴","subitem_title_language":"ja"}]},"item_type_id":"10002","owner":"10","path":["1716950799012"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-06-10"},"publish_date":"2024-06-10","publish_status":"0","recid":"2007365","relation_version_is_last":true,"title":["北上川水系およびその付近の河川に溯上するサクラマスの生物学的特徴"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-02-04T00:33:06.924883+00:00"}