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AnAge entry for Onychomys torridus

Classification (HAGRID: 03364)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Muridae
                    Genus: Onychomys
SpeciesOnychomys torridus
Common nameSouthern grasshopper mouse

Lifespan, ageing, and relevant traits

Maximum longevity4.6 years (captivity)
Sourceref. 671
Sample sizesmall
Data qualityacceptable
Observations

Females seldom breed for more than 2 years. Sexual maturity is reached as early as 6 weeks after birth [0434]. As juveniles, females have on average 3.8 litters per year with a total of 9.8 young. As adults, the litter number decreases to 1.6 litters per year for a total of 4 young per year.

Life history traits (averages)

Female sexual maturity41 days
Male sexual maturity41 days
Gestation30 days
Weaning20 days
Litter size3.7 (viviparous)
Litters per year2.7
Inter-litter interval30 days
Weight at birth2.6 g
Weight at weaning9.2 g
Adult weight22 g
Postnatal growth rate0.018 days-1 (from Gompertz function)
Maximum longevity residual58 %

Metabolism

Typical body temperature309ºK or 36.0ºC or 96.8ºF
Basal metabolic rate0.1650 W
Body mass19.1 g
Metabolic rate per body mass0.008639 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
[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
[0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves

External resources

Integrated Taxonomic Information SystemITIS 180383
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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