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AnAge entry for Microtus pennsylvanicus

Classification (HAGRID: 03338)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Muridae
                    Genus: Microtus
SpeciesMicrotus pennsylvanicus
Common nameMeadow vole
SynonymsMicrotus nesophilus

Lifespan, ageing, and relevant traits

Maximum longevityNot yet established
Observations

Little is known about the longevity of these animals, though they have been estimated to live up to 3.9 years [0511].

Life history traits (averages)

Female sexual maturity29 days
Male sexual maturity37 days
Gestation21 days
Weaning14 days
Litter size5.5 (viviparous)
Litters per year2.6
Inter-litter interval21 days
Weight at birth2.46 g
Weight at weaning11.52 g
Adult weight49 g
Postnatal growth rate0.0397 days-1 (from Gompertz function)

Metabolism

Typical body temperature312ºK or 38.5ºC or 101.3ºF
Basal metabolic rate0.4280 W
Body mass38.2 g
Metabolic rate per body mass0.011204 W/g

References
[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
[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
[0511] Ronald Nowak and John Paradiso (1983), Walker's Mammals of the World

External resources

Integrated Taxonomic Information SystemITIS 180297
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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