{"created":"2023-06-19T08:13:57.224020+00:00","id":218,"links":{},"metadata":{"_buckets":{"deposit":"8e65cd2a-d809-4cc1-88db-e6851647d226"},"_deposit":{"created_by":3,"id":"218","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"218"},"status":"published"},"_oai":{"id":"oai:tust.repo.nii.ac.jp:00000218","sets":["7:56"]},"author_link":["742","743"],"control_number":"218","item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2015-03-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"15","bibliographicPageStart":"11","bibliographicVolumeNumber":"11","bibliographic_titles":[{"bibliographic_title":"帝京科学大学紀要"},{"bibliographic_title":"Bulletin of Teikyo University of Science","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Crayfish have “gastroliths” in which calcium is deposited transiently during the molt cycle from the cuticle. In red swamp\ncrayfish, amorphous calcium carbonate is embedded in an organic matrix composed mainly of chitin. Thus the seasonality\nof molting will strongly affect the number and possession rate of gastroliths in crayfish. In this study, we captured 405 wild\nred swamp crayfish in May-November 2014 at a small pond and stream in Tsuzuki central park, Yokohama using a net for\ncapturing crab or a fishing line with dried squid, and analyzed the seasonality of number of gastroliths in their stomach,\ndegree of calcification of the gastrolith in relation with the molting cycle. Among 405 crayfish, only 48 individuals had one or\ntwo gastroliths, in a biforked stomach. Gastroliths were found only in May-July and October-November, and large gastroliths\nwere found from the individuals just before and after the molt. We also found one or two chitin matrix from the stomach of\nall the individuals who didn’t have gastroliths. Red swamp crayfish are important food item of fish-eating birds such as great\ncormorant, and their gastroliths and chitin matrix are found in the birds’ pellets. Here we propose a formula to estimate the\nintake of crayfish by birds using the number of gastroliths and chitin matrix found in birds’ pellets.","subitem_description_type":"Abstract"}]},"item_10002_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.18881/00000211","subitem_identifier_reg_type":"JaLC"}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"18800580","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"三橋, 萌樹"},{"creatorName":"ミツハシ, モエギ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"742","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"下岡, ゆき子"},{"creatorName":"シモオカ, ユキコ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"743","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2015-03-31"}],"displaytype":"detail","filename":"v11p11-15.pdf","filesize":[{"value":"2.2 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"v11p11-15.pdf","url":"https://tust.repo.nii.ac.jp/record/218/files/v11p11-15.pdf"},"version_id":"b3fe3527-631a-44ea-8486-d1546eefcb6e"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"red swamp crayfish","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"gastrolith","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"chitin matrix","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"mol","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"pellet","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cormorant","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":"野生アメリカザリガニの胃石およびキチン質基質の所持とその季節性","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"野生アメリカザリガニの胃石およびキチン質基質の所持とその季節性","subitem_title_language":"ja"},{"subitem_title":"Seasonality of gastrolith and chitin matrix possession of wild red swamp crayfish.","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"3","path":["56"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2015-03-31"},"publish_date":"2015-03-31","publish_status":"0","recid":"218","relation_version_is_last":true,"title":["野生アメリカザリガニの胃石およびキチン質基質の所持とその季節性"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-08-28T00:52:28.732365+00:00"}