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AnAge entry for Vulpes velox


Classification (HAGRID: 02448)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Canidae
                    Genus: Vulpes
SpeciesVulpes velox
Common nameSwift fox
SynonymsVulpes velox velox, Vulpes velox hebes

Lifespan, ageing, and relevant traits

Maximum longevity15.9 years (captivity)
Sourceref. 671
Sample sizemedium
Data qualityacceptable
Observations

Anecdotal reports suggest these animals may live up to 20 years [0610]. Record longevity in captivity, however, belongs to a wild born male that was around 15.9 years when he died in captivity [0671].

Life history traits (averages)

Female sexual maturity365 days
Male sexual maturity365 days
Gestation55 days
Weaning46 days
Litter size4.5 (viviparous)
Litters per year1
Inter-litter interval365 days
Weight at birth39.65 g
Weight at weaning
Adult weight2,400 g
Postnatal growth rate0.0315 days-1 (from Gompertz function)
Maximum longevity residual98 %

Metabolism

Typical body temperatureNot yet available
Basal metabolic rate4.9480 W
Body mass1769.0 g
Metabolic rate per body mass0.002797 W/g

References

[0817] Bielby et al. (2007), The fast-slow continuum in mammalian life history: an empirical reevaluation, 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
[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
[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
[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 180607
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

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Ageing literature

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