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Journal Article
Reproductive Pauses by Female Caribou
Raymond D. Cameron
Journal of Mammalogy
Vol. 75, No. 1 (Feb., 1994), pp. 10-13
Published
by: American Society of Mammalogists
DOI: 10.2307/1382230
https://www.jstor.org/stable/1382230
Page Count: 4
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Topics: Caribous, Parturition, Herds, Pregnancy, Fecundity, Reindeer, Birth, Sheep, Body condition
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Abstract
Parturition status of 53 radiocollared, female caribou (Rangifer tarandus granti) of the central Arctic herd was determined through repeated observations by fixed-wing aircraft during 2-5 periods of parturition. The overall frequency of reproductive pauses for females that were initially parturient, or previously confirmed to be parturient, was 24% (ca. once every 4 years). Most pauses preceded (78%) and followed (87%) parturition events. Periodic infertility, as a response to nutritional stress, may enhance long-term reproductive performance in caribou and other ungulates.
Journal of Mammalogy © 1994 American Society of Mammalogists