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AnAge entry for Proechimys semispinosus

Classification (HAGRID: 03222)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Rodentia
                Family: Echimyidae
                    Genus: Proechimys
SpeciesProechimys semispinosus
Common nameSpiny rat

Lifespan, ageing, and relevant traits

Maximum longevity5.8 years (captivity)
Sourceref. 671
Sample sizesmall
Data qualityacceptable
Observations

It has been reported that 2 year old animals are common [0434].

Life history traits (averages)

Female sexual maturity146 days
Male sexual maturity146 days
Gestation64 days
Weaning21 days
Litter size2.4 (viviparous)
Litters per year4.68
Inter-litter interval
Weight at birth23 g
Weight at weaning
Adult weight500 g
Postnatal growth rate0.0131 days-1 (from Gompertz function)
Maximum longevity residual45 %

Metabolism

Typical body temperature311ºK or 37.9ºC or 100.2ºF
Basal metabolic rate1.7500 W
Body mass498.0 g
Metabolic rate per body mass0.003514 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 584853
Animal Diversity WebADW account (if available)
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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