AnAge entry for Onychomys torridus

Classification (HAGRID: 02911)

Taxonomy: Kingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Cricetidae
                    Genus: Onychomys
Species: Onychomys torridus
Common name: Southern grasshopper mouse
Synonyms: Onychomys longicaudus, Onychomys macrotis, Onychomys pulcher, Onychomys ramona, Onychomys torridus clarus, Onychomys torridus perpallidus, Onychomys torridus tularensis, Onychomys torridus yakiensis, Onychomys torridus ramona

Maximum longevity: 4.6 years (captivity)
Source: ref. 671
Sample size: Small
Data quality: Acceptable
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.

[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