Seasonal and Latitudinal Variations in Circadian Rhythms of Red-Backed Vole | Zendy

Lucius L. Stebbins | Zendy

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Seasonal and Latitudinal Variations in Circadian Rhythms of Red-Backed Vole

Author(s) -

Lucius L. Stebbins

Publication year - 1972

Publication title -

arctic

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 59

eISSN - 1923-1245

pISSN - 0004-0843

DOI - 10.14430/arctic2963

Subject(s) - nocturnal , noon , circadian rhythm , morning , evening , dusk , spring (device) , rhythm , biology , rutilus , ecology , environmental science , zoology , atmospheric sciences , geology , fishery , fish <actinopterygii> , medicine , endocrinology , mechanical engineering , botany , physics , astronomy , engineering

Circadian rhythms of two allopatric species, Clethrionomys gapperi and C. rutilus were studied near their common border at Heart Lake, Northwest Territories, Canada, in winter and spring of 1965-1966. Circadian rhythms of C. gapperi were also studied at Edmonton, Alberta, in the winter and spring of 1964- 1965. Activity was measured by recording passages through a door in cages exposed to normal meteorological conditions of the forest floor. Daily peaks of activity of each species were of longer duration and higher amplitude in spring than in winter. C. rutilus was polyphasic in winter, nocturnal in spring. C. gapperi at Heart Lake was nocturnal in winter but had peaks of activity persisting from dusk each evening to noon of the following day. C. gapperi at Edmonton was diurnal in all seasons.

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