{"created":"2023-06-19T12:47:07.305705+00:00","id":7253,"links":{},"metadata":{"_buckets":{"deposit":"7be38dce-9a10-45ed-afe7-e05e4162fdad"},"_deposit":{"created_by":3,"id":"7253","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"7253"},"status":"published"},"_oai":{"id":"oai:tokyo-metro-u.repo.nii.ac.jp:00007253","sets":["465:475:478:479:1642"]},"author_link":["23554","23558","23555","23561","23556","23563","23562","23557","23559","23560"],"item_16_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Bonin flying fox of Minami-Iwo-To Island, the Volcano Islands in 2017"}]},"item_16_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"44","bibliographicPageEnd":"208","bibliographicPageStart":"167","bibliographic_titles":[{"bibliographic_title":"小笠原研究 = Ogasawara research"}]}]},"item_16_creator_3":{"attribute_name":"著者別名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Suzuki, Hajime"}],"nameIdentifiers":[{"nameIdentifier":"23559","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Horikoshi, Kazuo"}],"nameIdentifiers":[{"nameIdentifier":"23560","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Horikoshi, Sora"}],"nameIdentifiers":[{"nameIdentifier":"23561","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ameda, Yosuke"}],"nameIdentifiers":[{"nameIdentifier":"23562","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Murata, Yusuke"}],"nameIdentifiers":[{"nameIdentifier":"23563","nameIdentifierScheme":"WEKO"}]}]},"item_16_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"南硫黄島のオオコウモリの生息状況を明らかにするとともに、生態晴報、遺伝時報を得る目的で、2017年6月13日～28日の期間に現地で調査を行った。その結果、過去に生息分布が確認されていたオガサワラオオコウモリ Pteropus pselaphon が確認され、個体数においても特に大きな変動はないものと考えられた。1982年調査では「昼行性」、2007年調査では「昼間及び夜間にも活発に活動する」とされた日周行動は、「夜間活発に活動し、昼間は特に午後から活発に活動する」ことが観察された。1982年、2007年調査において、他地域より明るいとされた本種の体毛色は、本調査でも観察された。体毛色は明るい赤さび色(鉄さび色)であった。同時に乳幼獣の体毛色が黒色であったことから、後天的に環境的な影響によって赤さび色に変色していることが明らかになり、他地域の個体群とは異なる昼間を含む活動時間による影響が考えられた。食性では、新たにススキの採食が山頂域の地表近くで確認された。また、南硫黄島特有の行動様式として、上昇気流及び高度差を利用した帆翔や、翼を畳んだ急降下のほか、はばたかない滑空飛行を多用する移動行動が観察された。さらに、UAVによる調査では、主要な餌植物であるタコノキにおいて島の斜面方位により開花状況に違いが認められ、オオコウモリが餌植物のフェノロジーの島内変異を利用している可能性が示唆された。捕獲調査で得られた個体は成獣♂2頭、同♀3頭、乳幼獣の♂1頭であった。授乳中の親子個体の確認により、6月下旬が同島のオオコウモリの育児期間であることが明らかになった。また、捕獲された成獣の歯では、全個体で著しい摩耗が確認された。人為的攪乱が最小限に抑えられた南硫黄島個体群の存続は、本種の保全上極めて重要である。今後これら本種の個体群推移についてモニタリングを続ける必要がある。","subitem_description_type":"Abstract"},{"subitem_description":"The Bonin flying fox (Pteropus pselaphon) is the only mammal endemic to the Ogasawara Islands. A field survey was conducted in June 2017 to clarify the current status of this species on Minami-Iwo-To Island. This survey estimated the flying fox population at more than 100 individuals, similar to the population size estimated by previous surveys in 1982 and 2007. Our survey revealed that June is a birthing and parenting period. We observed unique flying behaviors, such as flying using an ascending airstream and steep, falcon-like descents. Based on observations using an unmanned aerial vehicle (UAV), it was suggested that Bonin flying foxes on Minami-Iwo-To Island use phonological variations in the timing of maturity of fruits of Pandanus boninensis, its major food resource.","subitem_description_type":"Abstract"}]},"item_16_description_40":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"postprint","subitem_description_type":"Other"}]},"item_16_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"首都大学東京小笠原研究委員会"}]},"item_16_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00032332","subitem_source_identifier_type":"NCID"}]},"item_16_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03868176","subitem_source_identifier_type":"ISSN"}]},"item_16_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"鈴木, 創"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"堀越, 和夫"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"堀越, 宙"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"飴田, 洋祐"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"村田, 悠介"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-03-13"}],"displaytype":"detail","filename":"20001-044-008.pdf","filesize":[{"value":"5.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"20001-044-008.pdf","url":"https://tokyo-metro-u.repo.nii.ac.jp/record/7253/files/20001-044-008.pdf"},"version_id":"0572d794-be49-40f1-ba2a-b42575292827"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"オガサワラオオコウモリ","subitem_subject_scheme":"Other"},{"subitem_subject":"固有種","subitem_subject_scheme":"Other"},{"subitem_subject":"体毛色","subitem_subject_scheme":"Other"},{"subitem_subject":"飛行形態","subitem_subject_scheme":"Other"},{"subitem_subject":"繁殖期","subitem_subject_scheme":"Other"},{"subitem_subject":"Bonin flying-fox","subitem_subject_scheme":"Other"},{"subitem_subject":"Flight form","subitem_subject_scheme":"Other"},{"subitem_subject":"Ogasawara Islands","subitem_subject_scheme":"Other"},{"subitem_subject":"Volcano Islands","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":"南硫黄島のオガサワラオオコウモリ","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"南硫黄島のオガサワラオオコウモリ"}]},"item_type_id":"16","owner":"3","path":["1642"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-15"},"publish_date":"2019-03-15","publish_status":"0","recid":"7253","relation_version_is_last":true,"title":["南硫黄島のオガサワラオオコウモリ"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-19T16:19:34.078828+00:00"}