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AnAge entry for Tamiasciurus hudsonicus

Classification (HAGRID: 03518)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Sciuridae
                    Genus: Tamiasciurus
SpeciesTamiasciurus hudsonicus
Common nameRed squirrel

Lifespan, ageing, and relevant traits

Maximum longevity9.8 years (captivity)
Sourceref. 671
Sample sizetiny
Data qualityacceptable
Observations

One captive specimen lived 9.8 years [0671].

Life history traits (averages)

Female sexual maturity342 days
Male sexual maturity
Gestation37 days
Weaning63 days
Litter size4.2 (viviparous)
Litters per year1.7
Inter-litter interval
Weight at birth7 g
Weight at weaning83.8 g
Adult weight200 g
Postnatal growth rate0.0216 days-1 (from Gompertz function)
Maximum longevity residual89 %

Metabolism

Typical body temperature312ºK or 38.7ºC or 101.7ºF
Basal metabolic rate1.6150 W
Body mass219.6 g
Metabolic rate per body mass0.007354 W/g

References
[0777] Harper et al. (2007), Skin-derived fibroblasts from long-lived species are resistant to some, but not all, lethal stresses and to the mitochondrial inhibitor rotenone, PubMed
[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
[0420] White and Seymour (2003), Mammalian basal metabolic rate is proportional to body mass2/3, PubMed
[0610] Ernest (2003), Life history characteristics of placental non-volant mammals
[0434] Ronald Nowak (1999), Walker's Mammals of the World
[0676] Purvis and Harvey (1995), Mammal life-history evolution: a comparative test of Charnov’s model
[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
[0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves

External resources

Integrated Taxonomic Information SystemITIS 180166
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

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Ageing literature

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