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dc.contributor.author | Zamma, Koichiro | en |
dc.contributor.alternative | 座馬, 耕一郎 | ja |
dc.date.accessioned | 2015-04-17T05:20:52Z | - |
dc.date.available | 2015-04-17T05:20:52Z | - |
dc.date.issued | 2013-07-02 | - |
dc.identifier.issn | 1610-7365 | - |
dc.identifier.uri | http://hdl.handle.net/2433/197324 | - |
dc.description.abstract | I examined the possible cause of night awakening among wild chimpanzees (Pan troglodytes) in Mahale Mountains National Park, Tanzania. Chimpanzee vocalizations and activity-related sounds (CVSs) were used to indicate awakening because I was unable to visually observe them. Over a 5-night observation period, CVSs (n = 128) were heard every night, and most (n = 91) were observed within 5 min of previous CVSs. Chimpanzees use CVSs as social communication to maintain spatial contact with other chimpanzees who occasionally travel at night. The first sound in a sequence of CVSs (CVS bout) was heard immediately following the vocalization or sound of another animal (n = 11), defecation or urination by a chimpanzee (n = 7), or unknown (n = 19). CVS bouts were longer when preceded by defecation or urination than when preceded by the vocalization or sound of other animals or an unknown factor. This suggests that the degree of wakefulness varies according to the possible cause of the disturbance. CVSs at night may be provoked by various factors, and awakening during the night is probably common among diurnal primates. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Springer Japan | en |
dc.rights | The final publication is available at Springer via http://dx.doi.org/10.1007/s10329-013-0367-1 | en |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.subject | Wild chimpanzee | en |
dc.subject | Night awakening | en |
dc.subject | Vocalization and activity-related sound | en |
dc.subject | Mahale Mountains | en |
dc.subject.mesh | Animals | en |
dc.subject.mesh | Circadian Rhythm | en |
dc.subject.mesh | Pan troglodytes/physiology | en |
dc.subject.mesh | Sleep | en |
dc.subject.mesh | Tanzania | en |
dc.subject.mesh | Vocalization, Animal | en |
dc.title | What makes wild chimpanzees wake up at night? | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Primates; journal of primatology | en |
dc.identifier.volume | 55 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 51 | - |
dc.identifier.epage | 57 | - |
dc.relation.doi | 10.1007/s10329-013-0367-1 | - |
dc.textversion | author | - |
dc.identifier.pmid | 23817693 | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
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