Total Activity Rhythms of Three Soricine Species in Hokkaido

Ohdachi, Satoshi

Journal of the Mammalogical Society of Japan, 1994, 19(2), 89-99

Permalink : https://hdl.handle.net/2115/44440

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アクセス権	open access
URI	https://hdl.handle.net/2115/44440
タイトル	Total Activity Rhythms of Three Soricine Species in Hokkaido
著者	e-Rad_Researcher 60292041 著者名 Ohdachi, Satoshi
言語	英語
キーワード	Sorex
	Total activity
	Daily rhythm
	Infrared sensor system
	Nocturnal
発行日	1994-12
出版者	Mammalogical Society of Japan
収録物名	Journal of the Mammalogical Society of Japan
巻(号)	19(2)
ページ	89-99
抄録	Daily activity rhythms of three sympatric soricine shrews in Hokkaido were investigated. Nineteen Sorex unguiculatus, 13 S. caecutiens, and 11 S. gracillimus were captured, and their total activities were studied using an infrared sensor system under two different laboratory regimes (16L8D, 20℃ and 10L14D, 5-15℃). All the three shrew species were more active during periods of darkness than during light periods; however, during the light periods most of S. gracillimus and some of S. unguiculatus and S. caecutiens exhibited short intermittent activity. Activity during periods of darkness was polymodal for all the three species under the 10L14D, 5 -15℃ regime, but was bimodal in S. unguiculatus under the 16L8D, 20℃ regime. The actogram pattern of S. caecutiens proved to be intermediate between S. unguiculatus and S. gracillimus. Interspecific differences in activity pattern seem to be related to body size in the genus Sorex.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	0914-1855