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AnAge entry for Spermophilus franklinii

Classification (HAGRID: 03497)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Sciuridae
                    Genus: Spermophilus
SpeciesSpermophilus franklinii
Common nameFranklin's ground squirrel

Lifespan, ageing, and relevant traits

Maximum longevity7.2 years (captivity)
Sourceref. 671
Sample sizesmall
Data qualityacceptable
Observations

One specimen lived 7.2 years in captivity [0671].

Life history traits (averages)

Female sexual maturity327 days
Male sexual maturity327 days
Gestation28 days
Weaning42 days
Litter size7.5 (viviparous)
Litters per year1
Inter-litter interval
Weight at birth
Weight at weaning
Adult weight459 g
Postnatal growth rate
Maximum longevity residual57 %

Metabolism

Typical body temperatureNot yet available
Basal metabolic rate2.1900 W
Body mass607.0 g
Metabolic rate per body mass0.003608 W/g

References
[0671] Richard Weigl (2005), Longevity of Mammals in Captivity; from the Living Collections of the World
[0036] Savage et al. (2004), The predominance of quarter-power scaling in biology
[0610] Ernest (2003), Life history characteristics of placental non-volant mammals
[0434] Ronald Nowak (1999), Walker's Mammals of the World
[0538] Don Wilson and Sue Ruff (1999), The Smithsonian Book of North American Mammals
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
[0542] Bernhard Grzimek (1990), Grzimek's Encyclopedia of Mammals
[0680] Wootton (1987), The effects of body mass, phylogeny, habitat, and trophic level on mammalian age at first reproduction

External resources

Integrated Taxonomic Information SystemITIS 180153
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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