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dc.contributor.authorvan der Merwe, I.
dc.contributor.authorOosthuizen, M.K.
dc.contributor.authorChimimba, C.T.
dc.contributor.authorBennett, N.C.
dc.date.accessioned2011-11-24T06:28:21Z
dc.date.available2011-11-24T06:28:21Z
dc.date.issued2011
dc.identifier.citationvan der Merwe, I.; Oosthuizen, M.K.; Chimimba, C.T. and Bennett, N.C. (2011) Circadian rhythms of locomotor activity in the reddish-grey musk shrew (Eulipotyphla: Soricidae) from South Africa. Journal of Zoology 284, 124–132en
dc.identifier.issn0952-8369en
dc.identifier.urihttp://hdl.handle.net/123456789/964
dc.description.abstractThe circadian rhythm of locomotor activity in a southern African shrew, the reddish-grey musk shrew Crocidura cyanea was investigated. Thirteen individuals were subjected to three successive light cycles, each cycle lasting approximately 2 weeks: an LD cycle (12 h light/12 h dark), a DD cycle (constant darkness) and a DL cycle (an inverse of the LD cycle). All of the animals exhibited entrainment of their activity to the LD and DL lighting regimes. Locomotor activity of C. cyanea occurred predominantly during the dark phases of the LD cycle and the DL cycle. Under LD, the mean active phase (α) of C. cyanea was 10.8±0.3 h and the total percentage of activity was 78.9% during the dark phase. When subjected to constant darkness, the mean active phase increased to 13.2±01.8 h and all animals expressed free-running rhythms of locomotor activity (mean± 1 SD=23.0±0.55 h; range=22.4–23.7 h). On the reverse LD cycle, the mean active phase was lowest (09.3±0.16 h) and the total percentage of activity was 71.5% during the dark phase of the cycle. The reddish-grey musk shrew possesses a strong circadian rhythm of locomotor activity that predominantly occurs during the dark phase and consequently the musk shrew may essentially be considered a nocturnal mammal.en
dc.format.extent410925 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherThe Zoological Society of Londonen
dc.subjectlocomotor activityen
dc.subjectCircadian rhythmen
dc.subjectSoricidaeen
dc.subjectfree-runen
dc.subjectCrocidura cyaneaen
dc.titleCircadian rhythms of locomotor activity in the reddish-grey musk shrew (Eulipotyphla: Soricidae) from South Africaen
dc.typeJournalArticlesen
dc.cibjournalJournal of Zoologyen
dc.cibprojectNAen


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