{"created":"2024-04-23T01:57:06.443884+00:00","id":2002536,"links":{},"metadata":{"_buckets":{"deposit":"a4d04b43-c2a9-4c92-854d-eaa7cd86f696"},"_deposit":{"created_by":10,"id":"2002536","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2002536"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02002536","sets":["12:14:1716951426151"]},"author_link":["2695","2059","1992","499"],"control_number":"2002536","item_10002_alternative_title_1":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"(3) ヒラメ0才魚の摂餌日周性","subitem_alternative_title_language":"ja"},{"subitem_alternative_title":"(3) Diurnal Feeding Periodicity of 0-Group Flounder","subitem_alternative_title_language":"en"}]},"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1982-12","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"14","bibliographicPageEnd":"80","bibliographicPageStart":"67","bibliographicVolumeNumber":"33","bibliographic_titles":[{"bibliographic_title":"日本海区水産研究所研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of the Japan Sea Regional Fisheries Research Laboratory","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The relationship between the abundance of the food organisms and the growth of the 0-group sinistral flounder, Paralichthys olivaceus, is one of the most important problems related to the propagation by release of the seedlings. As a first step to elucidate the relationships between growth and food intake in the nursery ground, the diurnal feeding periodicity of 0-group fish was investigated. The specimens were collected from two successive sampling series of 24 hours in the shallow waters at Igarashihama, Niigata City in September, 1981. Because of the restricted food spectrum, the stomach contents could be divided into two categories, i. e. crustaceans, mainly mysids with two or three species of shrimps, and juvenile fishes of three or four species. Then the contents were classified into three digestive degrees and each weight was determined. The method applied here is useful for estimating the times of the feeding peaks. The stomach content weight as percent body weight was high during the day and decreased gradually in the night. No feeding in the night was demonstrated, but avtive feeding seemed to occur during the twilight hours. These results indicate that P. olivaceus is a typical \"day-feeder\" and one of the main factors influencing the feeding activity is the light intensity. A peak of feeding activity was found during the first few hours after sunrise and then one or two peaks were observed in the afternoon. Close relationships between the feeding peaks and the diurnal activity of the food organisms were assumed, therefore the existence of available food organisms together with the fish's appetite may participate in the formation of feeding peaks.","subitem_description_language":"en","subitem_description_type":"Abstract"},{"subitem_description":"ヒラメ0才魚の摂餌日周性を明らかにすることを目的に3時間毎の24時間連続採集を行い,採集魚の胃内容物をその重量と消化状態に重点をおいて分析した.得られた結果は以下のとおりである.1. 主な餌料生物はアミ類,アキアミ,稚ェビ類(コエビ族),カタクチイワシ稚魚,ニベ科魚類稚魚であり,食性は比較的単純(狭食性)であつた.2. 摂餌個体の出現率,胃内容重量体重比は昼間高く,夜間減少した.したがつて,ヒラメ0才魚は昼型の摂餌活動を行うといえる.3. 日没約3時間後および日の出約40分後の胃内容重量体重比および消化度から,いわゆる薄明時にも活発な摂餌活動が行われるものと推察された.4. 消化度別の胃内容重量の経時変化から,摂餌活動のピークは日の出から約3時間内に1回,正午から日没へかけて1ないし2回存在すると言える.5. 摂餌活動のピーク形成には餌料生物の分布量,活動日周性等が強く関与するものと推定された.","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本海区水産研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"Japan Sea Regional Fisheries Research Laboratory","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":"js_k_33_67_80","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/2010263724","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":"AN00186380","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0021-4620","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata 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olivaceus","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"10","path":["1716951426151"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-04-23"},"publish_date":"2024-04-23","publish_status":"0","recid":"2002536","relation_version_is_last":true,"title":["ヒラメ増殖上の諸問題に関する基礎的研究"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-04-02T04:07:50.279815+00:00"}