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AnAge entry for Gulo gulo

Classification (HAGRID: 02523)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Mustelidae
                    Genus: Gulo
SpeciesGulo gulo
Common nameWolverine

Lifespan, ageing, and relevant traits

Maximum longevity19.5 years (captivity)
Sourceref. 671
Sample sizemedium
Data qualityacceptable
Observations

These animals feature delayed implantation [0434]. Depending on how long the implantation takes to occur, the total gestation time can take from 120 to 272 days, even though the active developmental time is about 35 days [0455].

Life history traits (averages)

Female sexual maturity710 days
Male sexual maturity776 days
Gestation35 days
Weaning87 days
Litter size3 (viviparous)
Litters per year0.5
Inter-litter interval639 days
Weight at birth95 g
Weight at weaning
Adult weight16,333 g
Postnatal growth rate0.0182 days-1 (from Gompertz function)
Maximum longevity residual90 %

Metabolism

Typical body temperature310ºK or 37.0ºC or 98.6ºF
Basal metabolic rate31.7650 W
Body mass12700.0 g
Metabolic rate per body mass0.002501 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
[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
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
[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 180551
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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