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AnAge entry for Castor canadensis

Classification (HAGRID: 03190)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Castoridae
                    Genus: Castor
SpeciesCastor canadensis
Common nameAmerican beaver

Lifespan, ageing, and relevant traits

Maximum longevity23.4 years (captivity)
Sourceref. 671
Sample sizesmall
Data qualityacceptable
Observations

It has been suggested that beavers may live as much as 50 years [0434], which is doubtful. One captive specimen was still alive after 23.4 years [0671].

Life history traits (averages)

Female sexual maturity639 days
Male sexual maturity639 days
Gestation128 days
Weaning60 days
Litter size3.5 (viviparous)
Litters per year1
Inter-litter interval365 days
Weight at birth430 g
Weight at weaning
Adult weight20,250 g
Postnatal growth rate
Maximum longevity residual105 %

Metabolism

No information on metabolism available.

References
[0776] Seluanov et al. (2007), Telomerase activity coevolves with body mass not lifespan, PubMed
[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
[0434] Ronald Nowak (1999), Walker's Mammals of the World
[0441] William Burt et al. (1998), A Field Guide to Mammals
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
[0511] Ronald Nowak and John Paradiso (1983), Walker's Mammals of the World

External resources

Integrated Taxonomic Information SystemITIS 180212
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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