1994/02/18 by R. D. Cameron · 8 citations
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · Environmental Science · #Reproductive Physiology in Livestock #Genetic and phenotypic traits in livestock #Wildlife Ecology and Conservation
paper · doi:10.2307/1382230
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.