{"created":"2024-06-18T03:49:12.416176+00:00","id":2007625,"links":{},"metadata":{"_buckets":{"deposit":"3a1f341d-8438-4509-911c-1d5824820e83"},"_deposit":{"created_by":10,"id":"2007625","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2007625"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02007625","sets":["12:14:1716955633551"]},"author_link":[],"control_number":"2007625","item_10002_biblio_info_7":{"attribute_name":"bibliographic_information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1991-11","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"8","bibliographicPageEnd":"40","bibliographicPageStart":"33","bibliographicVolumeNumber":"20","bibliographic_titles":[{"bibliographic_title":"養殖研究所研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of National Research Institute of Aquaculture","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"It is well known that adductor muscle of bivalves shows a sort of periodical expansion and contraction. In this study, open and close shell-movement of the mussel, Mytilus edulis L. was measured by strain-gauge method under natural conditions for investigating the characteristics of the movement and in what manner that relates to the environmental factors. Four individuals of the mussel, 5-6 cm in shell length, obtained from floating buoy on which they have attached, were separately put into the pocket-net used for pearl oyster culture and hung down at about 4 m depth from the floating pier. Measurement of each shell-movement was lasted for about a month. The pattern of the shell-movement which was characterized by fluctuation of shell-opening degree and shell-closure in short time was not so different among the mussels tested. It shows daily periodical change which rises at night and lowers at daytime. However, occasional occurrence of shell-closure and irregurality of the daily periodical pattern suggest that some other periodical environmental factors related to tidal change might act on the mussel.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"養殖研究所","subitem_publisher_language":"ja"}]},"item_10002_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"nria_k_20_33","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/2010501932","subitem_relation_type_select":"URI"}}]},"item_10002_source_id_11":{"attribute_name":"item_10002_source_id_11","attribute_value_mlt":[{"subitem_source_identifier":"AN00245945","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_9":{"attribute_name":"item_10002_source_id_9","attribute_value_mlt":[{"subitem_source_identifier":"0389-5858","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":"藤井, 武人","creatorNameLang":"ja"}],"familyNames":[{"familyName":"藤井","familyNameLang":"ja"}],"givenNames":[{"givenName":"武人","givenNameLang":"ja"}]},{"creatorNames":[{"creatorName":"杜多, 哲","creatorNameLang":"ja"}],"familyNames":[{"familyName":"杜多","familyNameLang":"ja"}],"givenNames":[{"givenName":"哲","givenNameLang":"ja"}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"biological rhythm; bivalve; mussel; shell-movement","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":"item_resource_type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"自然環境下におけるムラサキイガイの貝殻開閉運動","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"自然環境下におけるムラサキイガイの貝殻開閉運動","subitem_title_language":"ja"},{"subitem_title":"Open and Close Shell-Movement of the Mussel, Mytilus edulis L. under Natural Conditions","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"10","path":["1716955633551"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-06-18"},"publish_date":"2024-06-18","publish_status":"0","recid":"2007625","relation_version_is_last":true,"title":["自然環境下におけるムラサキイガイの貝殻開閉運動"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-04-03T05:17:58.159249+00:00"}