|Scientific Name:||Callospermophilus saturatus (Rhoads, 1895)|
|Scientific Name Synonyms:||
|English Name:||Cascade Golden-mantled Ground Squirrel|
|English Name Synonyms:||
Cascade Mantled Ground Squirrel
|Classification / Taxonomy|
|Scientific Name - Concept Reference:||Wilson, D. E., and D. M. Reeder (editors). 1993. Mammal species of the world: a taxonomic and geographic reference. Second edition. Smithsonian Institution Press, Washington, DC. xviii + 1206 pp. Available online at: http://www.nmnh.si.edu/msw/.|
|Taxonomy Comments:||March 2012 - name changed from Spermophilus saturatus to Callospermophilus saturatus to align with NatureServe (DDW).|
|Species Group:||Vertebrate Animal|
|Conservation Status / Legal Designation|
|Global Status:||G5 (Apr 2016)|
|Provincial Status:||S4 (Feb 2015)|
|Provincial FRPA list:|
|Provincial Wildlife Act:|
|COSEWIC Status:||Not at Risk (May 1992)|
|General Status Canada:||4 - Secure (2005)|
|Ecology & Life History|
|Global Reproduction Comments:||Copulation occurs in late April-early May. Gestation lasts 28 days. Litter size is 1-5 (average 4); one litter/year (Trombulak 1988). Females may breed as yearlings, males usually not until second year. Juveniles emerge from natal burrows in July-early August (Trombulak 1987).|
|Global Ecology Comments:||May live in colonies, but population densities typically are low (3/ha in forest, 5-12/ha in adjacent meadow in Washington). Populations may be highest in parks where human refuse is available as food. Relatively mobile; large % of residents may be immigrants (Trombulak 1987). Sedentary in British Columbia. EUTAMIAS AMOENUS occurs sympatrically.|
| Migration Characteristics:|
(Global / Provincial)
Within Borders Migrant:
(Type / Subtype / Dependence)
Alpine/Tundra / Krummholtz / Unknown
Forest / Conifer Forest - Dry / Unknown
Forest / Conifer Forest - Mesic (average) / Unknown
Forest / Conifer Forest - Moist/wet / Unknown
Riparian / Riparian Forest / Unknown
Rock/Sparsely Vegetated Rock / Cliff / Unknown
Rock/Sparsely Vegetated Rock / Rock/Sparsely Vegetated Rock / Unknown
Rock/Sparsely Vegetated Rock / Talus / Unknown
|Global Habitat Comments:||Talus slides and clearings; krummholz; closed coniferous forest, pine woodland, and adjacent open meadows and sagebrush steppe Trombulak, in Wilson and Ruff 1999). In underground burrow when inactive (Trombulak 1988). Young are born in underground burrows.|
Frugivore: Adult, Immature
Granivore: Adult, Immature
Herbivore: Adult, Immature
|Global Food Habits Comments:||Eats fungi (especially in fall), green vegetation, seeds, small fruits, carrion. In one study (Trombulak 1987), diet primarily VICIA leaves and fungi. Generally forages on ground, may climb into bushes and conifers.|
Diurnal: Adult, Immature
Hibernates/aestivates: Adult, Immature
|Global Phenology Comments:||Emergence from hibernation varies among years from mid-April to mid-May; yearlings emerge 1-2 weeks later than adults. Adults and yearlings end activity mid-August to late September; juveniles active into November and early December (Trombulak 1988).|
| Provincial Phenology:
(1st half of month/
2nd half of month)
|Length(cm)/width(cm)/Weight(g):||/ / 300|
|Elevation (m) (min / max):||
|Global Range Comment:||Cascade Mountains from southern British Columbia (west to the Fraser River, north to the Nicola River, east to the Okkanagan River) south to Columbia River in Washington (Trombulak 1988; Leung and Cheng, 1992 COSEWIC report).|
|Authors / Contributors|
|Global Information Author:||Hammerson, G.|
|Last Updated:||Jan 24, 1995|
|Provincial Information Author:|
|References and Related Literature|
Banfield, A. W. F. 1974. The mammals of Canada. University of Toronto Press, Toronto, Canada. 438 pp.
Dalquest. W. W. 1948. Mammals of Washington. University of Kansas Museum Natural History Publ. 2:1-444.
Ingles, L. G. 1965. Mammals of the Pacific States. Stanford University Press, Stanford, California.
Leung, M. C.-Y., and K. M. Cheng. 1994. Genetic variability of the Cascade mantled ground squirrel (SPERMOPHILUS SATURATUS) in British Columbia. Can. J. Zool. 72:371-374.
Murie, J. O., and G. R. Michener, editors. 1984. The biology of ground-dwelling squirrels: annual cycles, behavioral ecology and sociality. Univ. Nebraska Press, Lincoln. xvi + 459 pp.
Stevens, V., and S. Lofts. 1988. Species Notes for Mammals. Vol. 1 in A.P. Harcombe, tech. ed. Wildlife Habitat Handbooks for the Southern Interior Ecoprovince. B.C. Minist. Environ., Lands and Parks, Wildl. Branch. Tech. Rep. R-15. 174pp.
Trombulak, S. C. 1988. SPERMOPHILUS SATURATUS. Am. Soc. Mamm., Mammalian Species 322:1-4.
Trombulak, S.C. 1987. Life history of the Cascade golden- mantled ground squirrel (SPERMOPHILUS SATURATUS). J. Mamm. 68:544-554.
Wilson, D. E., and S. Ruff. 1999. The Smithsonian book of North American mammals. Smithsonian Institution Press, Washington, D.C. 750 pp.
Please visit the website Conservation Status Ranks for definitions of the data fields used in this summary report.
B.C. Conservation Data Centre. 1995. Species Summary: Callospermophilus saturatus. B.C. Minist. of Environment. Available: http://a100.gov.bc.ca/pub/eswp/ (accessed Apr 22, 2019).