{"created":"2023-06-19T07:30:53.397871+00:00","id":953,"links":{},"metadata":{"_buckets":{"deposit":"678e5c9c-44b9-49c5-8248-00c80a99e69c"},"_deposit":{"created_by":3,"id":"953","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"953"},"status":"published"},"_oai":{"id":"oai:nodai.repo.nii.ac.jp:00000953","sets":["47:48:199:202"]},"author_link":["4635","4632","4634","4633"],"item_1_biblio_info_12":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2022-12-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"115","bibliographicPageStart":"111","bibliographicVolumeNumber":"67","bibliographic_titles":[{}]}]},"item_1_description_10":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"高次捕食者であるアザラシ類は沿岸生態系において生態学的に重要な位置を占めていると考えられるが，その影響評価に必要な食性については，採餌行動を直接観察できないことから間接的な手法の他，胃内容分析による調査が行われている。このうち，胃内容分析は死亡する直前の1日間程度の採餌生物と採餌量を直接特定することができるものの，胃内の消化状況によって種の同定や採餌量の推定が過小評価になる恐れが指摘されている。本研究では，個体数管理上の殺処分が予定されているゼニガタアザラシ1個体に対して8日間連続で1日1個体のマダコ科頭足類を給餌した後に安楽死させ，胃中に残った顎板を解析することにより消化の影響を検討した。その結果，顎板は上顎，下顎ともに胃内に7日間程度保持された後，腸内へ消化されると推定された。顎板は消化により摩耗が進行するが，捕食されたマダコ科頭足類の重量を推定するのに必要な額板重量の再現には，下顎のLower-Hood Length（LHL）を使用することが最も精度が高いことが示唆された。","subitem_description_type":"Other"}]},"item_1_description_11":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"Seals are considered ecologically important because they are the top predator in coastal ecosystems.  However, the dietary habits necessary for assessing their impact have been investigated using indirect methods because foraging behavior cannot be directly observed.  Of these, stomach content analysis can directly identify the foraging organisms and the amount of food consumed during the day or so immediately prior to death.  On the other hand, it has been pointed out that the digestion in the stomach may lead to underestimation of species identification and foraging volume estimation.  In this study, we euthanized a harbor seal, which was scheduled to be killed for population control purposes, after feeding it one octopus per day for eight consecutive days and examined the effect of digestion by analyzing the remaining lower beaks in the stomach.  As a result, it was estimated that both the upper and lower jaw plates were retained in the stomach for about 7 days, and then migrated to the intestine.  The Lower-Hood Length (LHL) of the lower beak was suggested to be the most accurate method for reproducing the weight of the forehead plate, which is necessary for estimating the weight of a predated octopus.","subitem_description_type":"Other"}]},"item_1_description_13":{"attribute_name":"レポート・講演番号","attribute_value_mlt":[{"subitem_description":"E","subitem_description_type":"Other"}]},"item_1_description_15":{"attribute_name":"表示順","attribute_value_mlt":[{"subitem_description":"4","subitem_description_type":"Other"}]},"item_1_description_2":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P","subitem_description_type":"Other"}]},"item_1_description_8":{"attribute_name":"記事種別(日)","attribute_value_mlt":[{"subitem_description":"ノート","subitem_description_type":"Other"}]},"item_1_description_9":{"attribute_name":"記事種別(英)","attribute_value_mlt":[{"subitem_description":"Note","subitem_description_type":"Other"}]},"item_1_source_id_1":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00164184","subitem_source_identifier_type":"NCID"}]},"item_1_text_6":{"attribute_name":"著者所属(日)","attribute_value_mlt":[{"subitem_text_value":"東京農業大学大学院生物産業学研究科（第一著者のみ：水産研究・教育機構）"},{"subitem_text_value":"北の海の動物センター"}]},"item_1_text_7":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Department of Bioindustry, Graduate school of Tokyo University of Agriculture"},{"subitem_text_language":"en","subitem_text_value":"NPO Marin Wildlife Center of Japan"}]},"item_1_title_3":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_title":"キュウジカ　ニ　オケル　ゼニガタアザラシ　イナイ　マダコカ　トウソクルイ　ノ　ガクバンザンリュウヒョウカ"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"増渕, 隆仁"},{"creatorName":"マスブチ, タカヒト","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4632","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小林, 万里"},{"creatorName":"コバヤシ, マリ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4633","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Masubuchi, Takahito","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4634","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kobayashi, Mari","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4635","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":"2022-12-15"}],"displaytype":"detail","filename":"67_111.pdf","filesize":[{"value":"523.8 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"67_111","url":"https://nodai.repo.nii.ac.jp/record/953/files/67_111.pdf"},"version_id":"d4573436-6f44-4a79-8b41-1827e40f1096"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ゼニガタアザラシ","subitem_subject_scheme":"Other"},{"subitem_subject":"マダコ科頭足類","subitem_subject_scheme":"Other"},{"subitem_subject":"顎板","subitem_subject_scheme":"Other"},{"subitem_subject":"胃内容物","subitem_subject_scheme":"Other"},{"subitem_subject":"消化","subitem_subject_scheme":"Other"},{"subitem_subject":"harbor seal","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Enteroctopus spp","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"beak","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"stomach","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"digestion","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"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":"給餌下におけるゼニガタアザラシ胃内マダコ科頭足類の顎板残留評価","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"給餌下におけるゼニガタアザラシ胃内マダコ科頭足類の顎板残留評価"},{"subitem_title":"Assessment of octopus beak digestion by a harbor seal (Phoca vitulina) under feeding experiment","subitem_title_language":"en"}]},"item_type_id":"1","owner":"3","path":["202"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-12-15"},"publish_date":"2022-12-15","publish_status":"0","recid":"953","relation_version_is_last":true,"title":["給餌下におけるゼニガタアザラシ胃内マダコ科頭足類の顎板残留評価"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-19T07:38:16.105139+00:00"}