{"_buckets": {"deposit": "2e5bba16-f1fe-453e-8893-a77ee0f47cb1"}, "_deposit": {"id": "40633", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "40633"}, "status": "published"}, "_oai": {"id": "oai:repository.dl.itc.u-tokyo.ac.jp:00040633"}, "item_4_biblio_info_7": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2013-12", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageEnd": "25", "bibliographicPageStart": "19", "bibliographicVolumeNumber": "36", "bibliographic_titles": [{"bibliographic_title": "Coastal marine science"}]}]}, "item_4_description_5": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Anguillid eels are declining worldwide, so monitoring of their annual recruitment is important, but labor-intensive. Efficient ways to assess the abundance of their new recruits (0-age) each year would therefore be useful. Three discriminant analysis methods were evaluated for their ability to identify 0-age eels based on the total length (TL) of eels that included various age classes from 0-age to \u22652-age. Japanese eels were sampled every month from 2007 to 2009 in the Imagawa River, an inlet river of Hamana Lake in Japan, and the ages of 223 eels (50 to 250 mm TL) were determined using otolith annuli analyses. All three discriminant analyses could predict 0-age eels more accurately than 1-age and \u22652-age eels based on TL and catch date data. Canonical discriminant analysis appeared to be best for predicting 0-age eels, with all eels determined by otolith analysis as 0-age being correctly predicted (100%) in the leave-one-out cross validation method, although 2.4% of 1-age eels were wrongly predicted as 0-age. Studies of the recruitment patterns, habitat use, or ecology of 0-age recruits in a river system would be possible without additional aging efforts after a discriminant analysis function was created for a river system.", "subitem_description_type": "Abstract"}]}, "item_4_identifier_registration": {"attribute_name": "ID\u767b\u9332", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.15083/00040624", "subitem_identifier_reg_type": "JaLC"}]}, "item_4_publisher_20": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo"}]}, "item_4_source_id_10": {"attribute_name": "\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID", "attribute_value_mlt": [{"subitem_source_identifier": "AA11957899", "subitem_source_identifier_type": "NCID"}]}, "item_4_source_id_8": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "13493000", "subitem_source_identifier_type": "ISSN"}]}, "item_4_text_21": {"attribute_name": "\u51fa\u7248\u8005\u5225\u540d", "attribute_value_mlt": [{"subitem_text_value": "\u6771\u4eac\u5927\u5b66\u5927\u6c17\u6d77\u6d0b\u7814\u7a76\u6240\u56fd\u969b\u6cbf\u5cb8\u6d77\u6d0b\u7814\u7a76\u30bb\u30f3\u30bf\u30fc"}]}, "item_4_text_34": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"subitem_text_value": "Departmental Bulletin Paper"}]}, "item_4_text_4": {"attribute_name": "\u8457\u8005\u6240\u5c5e", "attribute_value_mlt": [{"subitem_text_value": "Atmosphere and Ocean Research Institute, The University of Tokyo"}, {"subitem_text_value": "Fisheries Laboratory, Graduate School of Agricultural and Life Sciences, The University of Tokyo"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Fukuda, Nobuto"}], "nameIdentifiers": [{"nameIdentifier": "93327", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Aoyama, Jun"}], "nameIdentifiers": [{"nameIdentifier": "93328", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Miller, Michael J."}], "nameIdentifiers": [{"nameIdentifier": "93329", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Suzuki, Yuzuru"}], "nameIdentifiers": [{"nameIdentifier": "93330", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Tsukamoto, Katsumi"}], "nameIdentifiers": [{"nameIdentifier": "93331", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2017-06-14"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "CMS360103.pdf", "filesize": [{"value": "649.0 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 649000.0, "url": {"label": "CMS360103.pdf", "url": "https://repository.dl.itc.u-tokyo.ac.jp/record/40633/files/CMS360103.pdf"}, "version_id": "4009679f-04f7-4e8d-8cea-51f4884b9594"}]}, "item_keyword": {"attribute_name": "\u30ad\u30fc\u30ef\u30fc\u30c9", "attribute_value_mlt": [{"subitem_subject": "Anguilla japonica", "subitem_subject_scheme": "Other"}, {"subitem_subject": "age", "subitem_subject_scheme": "Other"}, {"subitem_subject": "discriminant analysis", "subitem_subject_scheme": "Other"}, {"subitem_subject": "elvers", "subitem_subject_scheme": "Other"}, {"subitem_subject": "growth", "subitem_subject_scheme": "Other"}, {"subitem_subject": "otolith", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Discriminant analysis of age to enable rapid estimation of 0-age Japanese eels Anguilla japonica", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "Discriminant analysis of age to enable rapid estimation of 0-age Japanese eels Anguilla japonica"}]}, "item_type_id": "4", "owner": "1", "path": ["9/504/7165/7178/7179", "40/6494/7162/7176/7177"], "permalink_uri": "https://doi.org/10.15083/00040624", "pubdate": {"attribute_name": "\u516c\u958b\u65e5", "attribute_value": "2014-09-03"}, "publish_date": "2014-09-03", "publish_status": "0", "recid": "40633", "relation": {}, "relation_version_is_last": true, "title": ["Discriminant analysis of age to enable rapid estimation of 0-age Japanese eels Anguilla japonica"], "weko_shared_id": null}