Reproduction in yearling female Columbian ground squirrels (Spermophilus columbianus)
- 31 May 1981
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Zoology
- Vol. 59 (6), 1032-1035
- https://doi.org/10.1139/z81-143
Abstract
In 1980, 4 of 13 yearling female Columbian ground squirrels in a colony in southwestern Alberta raised litters. Mean litter size was not significantly smaller than that of adult females. Breeding and nonbreeding yearling females had similar growth rates as juveniles in 1979, but the former had a lower weight gain in 1980 before their young were weaned. Breeding yearling females were more aggressive and played less than nonbreeders. A combination of apparently good habitat quality in the study area and favourable weather conditions during summer of 1979 and in May of 1980 may have produced early sexual development of these females.This publication has 7 references indexed in Scilit:
- Litter Size in Columbian Ground Squirrels (Spermophilus columbianus)Journal of Mammalogy, 1980
- Spatial relationships and social organization of adult Richardson's ground squirrelsCanadian Journal of Zoology, 1979
- Effects of a spring snowstorm on behavior, reproduction, and survival of Belding's ground squirrelsCanadian Journal of Zoology, 1978
- Territoriality and dominance in male Columbian ground squirrels (Spermophilus columbianus)Canadian Journal of Zoology, 1978
- Behavioral Limitation of Round-Tailed Ground Squirrel DensityEcology, 1977
- Social system of round-tailed ground squirrelsAnimal Behaviour, 1977
- Socioecology of Marmots: Female Reproductive StrategiesEcology, 1976