{"created":"2023-05-15T15:18:28.692399+00:00","id":4866,"links":{},"metadata":{"_buckets":{"deposit":"b70e697b-43da-40d0-b31a-9e203c184beb"},"_deposit":{"created_by":12,"id":"4866","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"4866"},"status":"published"},"_oai":{"id":"oai:obihiro.repo.nii.ac.jp:00004866","sets":["74:75:333"]},"author_link":["6696","6697","6796","208","6612","6794","6795","6797"],"control_number":"4866","item_5_alternative_title_1":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Pre-reproductive behavior in the small Japanese field mouse : The relationship between nest-building behavior and reproductive condition","subitem_alternative_title_language":"en"}]},"item_5_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2022","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"21","bibliographicPageStart":"8","bibliographicVolumeNumber":"43","bibliographic_titles":[{"bibliographic_title":"帯広畜産大学学術研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Research bulletin of Obihiro University","bibliographic_titleLang":"en"}]}]},"item_5_description_19":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_5_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"ある種の野生哺乳類では、出産や育仔のために巣を作る行動が見られるが、この様な繁殖巣を調べることにより、その種の繁殖状況などを間接的に把握することが可能であると考えられる。北海道に生息するヒメネズミ個体群は、4月から10月にかけて年1山型の繁殖パターンを示し、繁殖期には樹上での活動が活発となる。巣箱を用いた観察結果から、繁殖時のメスは巣箱内に巣材を短期間に多く運び込むことが示されており、巣箱内の巣材量が急増する時期は、繁殖期と同様に年1山型を示すことが予測される。そこで本研究では、“巣箱内の巣材量の変化（急増）”が“ヒメネズミの繁殖活動の指標”となり得るのかを明らかにするため、両者の関連性について検証を試みた。加えて、個体数および気温の変動と巣材量との関係についても検討を行なった。北海道富良野市に位置する東京大学北海道演習林内のトドマツ優占天然針広混交林に調査区（5.4ha）を設けて60～120個の巣箱を架設し、2012年～2019年、および2021年の非積雪期（5月～10月）に巣箱を利用する本種の観察を行なった結果、調査期間を通して計122個の巣箱で巣材の急増が確認された。この様な巣箱の数は年ごとに異なったが、より多くの巣材急増巣箱が確認された調査年において、その出現パターンは繁殖期と同様に年一山型を示した。また、巣材急増巣箱数と捕獲個体数から予測された当該年の繁殖個体数との間には正の関係が見られたが、夏季において巣材急増巣箱の出現数は気温と負の関係を示した。これらの結果から、夏季の高温下においては検討が必要であるが、巣材量の増加は本種の繁殖活動の指標となり得ることが示された。","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"Some wild mammal species build nests when breeding, and investigating such breeding nests in the field may help us indirectly understand their reproductive status. In Hokkaido, Japan, the small Japanese field mouse (Apodemus argenteus) has a unimodal reproductive period between April and October. During this period, females become active on trees, and are known to construct breeding nests. A previous study using artificial nest boxes has revealed that female A. argenteus would carry many nesting materials (leaves) into nest boxes in a short time frame. Therefore, we hypothesized that a substantial increase in nesting materials within nest boxes could be a sign of active breeding within population. To test this hypothesis, we investigated the relationship between the rate of increase in nesting materials and the reproductive period in an A. argenteus population. Additionally, we examined whether the rate of increase in nesting materials is related to the number of reproductive individuals and the ambient temperature. We conducted this study at the University of Tokyo Hokkaido Forest, the University of Tokyo, Furano, Japan. We observed 60–120 nest boxes installed on tree trunks from May to October from 2012 to 2019 and in 2021. During the study period, we made 122 observations of sudden increases in nesting materials. Although the number of nests varied from year to year, we observed a unimodal pattern of the increase in nests. Additionally, the number of nests was positively correlated with the number of reproductive individuals, but negatively correlated with the ambient temperature during summer. Therefore, the rate of increase in nesting materials could be indicative of the A. argenteus population’s reproductive condition, although summer ambient temperature should also be considered.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_5_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24556/00004841","subitem_identifier_reg_type":"JaLC"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"帯広畜産大学"}]},"item_5_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"帯広畜産大学"}]},"item_5_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11877585","subitem_source_identifier_type":"NCID"}]},"item_5_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13485261","subitem_source_identifier_type":"PISSN"}]},"item_5_subject_21":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"489","subitem_subject_scheme":"NDC"}]},"item_5_version_type_20":{"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":[{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"佐々木, 乃梨","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"田辺, 結葉","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"本馬, 維子","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"矢野, 呼春","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"村上, 菫","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"照内, 歩","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"菊池, 隼人","creatorNameLang":"ja"}],"familyNames":[{}],"givenNames":[{}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"Oshida, Tatsuo","creatorNameLang":"en"},{"creatorName":"押田, 龍夫","creatorNameLang":"ja"}],"familyNames":[{},{}],"givenNames":[{},{}],"nameIdentifiers":[{},{},{},{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2023-04-18"}],"displaytype":"detail","filename":"02_43_sasaki.pdf","filesize":[{"value":"1.4 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"fulltext","url":"https://obihiro.repo.nii.ac.jp/record/4866/files/02_43_sasaki.pdf"},"version_id":"c0d56191-7252-4740-8456-19c40ae3ca0e"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"営巣資源","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"繁殖期","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"トドマツ優占天然針広混交林","subitem_subject_language":"ja","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":"ヒメネズミApodemus argenteusの繁殖準備行動：営巣用巣材の搬入と繁殖活動との関係","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ヒメネズミApodemus argenteusの繁殖準備行動：営巣用巣材の搬入と繁殖活動との関係","subitem_title_language":"ja"}]},"item_type_id":"5","owner":"12","path":["333"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-04-18"},"publish_date":"2023-04-18","publish_status":"0","recid":"4866","relation_version_is_last":true,"title":["ヒメネズミApodemus argenteusの繁殖準備行動：営巣用巣材の搬入と繁殖活動との関係"],"weko_creator_id":"12","weko_shared_id":-1},"updated":"2024-03-11T00:31:35.008613+00:00"}