AnAge entry for Ochotona princeps

Classification (HAGRID: 02936)
Taxonomy	Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry) Order: Lagomorpha Family: Ochotonidae Genus: Ochotona
Species	Ochotona princeps
Common name	North American pika
Lifespan, ageing, and relevant traits
Maximum longevity	7 years (captivity)
Source	ref. 671
Sample size	small
Data quality	acceptable
Observations	It has been estimated that these animals live up to 7 years in the wild [0573]. One wild born captive specimen was about 7 years old when it died in captivity [0671].
Life history traits (averages)
Female sexual maturity	347 days
Male sexual maturity
Gestation	30 days
Weaning	28 days
Litter size	3 (viviparous)
Litters per year	2.2
Inter-litter interval	30 days
Weight at birth	9 g
Weight at weaning	81.1 g
Adult weight	100 g
Postnatal growth rate	0.0376 days^-1 (from Gompertz function)
Maximum longevity residual	70 %
Metabolism
Typical body temperature	313ºK or 40.1ºC or 104.2ºF
Basal metabolic rate	0.9320 W
Body mass	109.0 g
Metabolic rate per body mass	0.008550 W/g
References
[0489] Forsyth et al. (2005), Lagomorphs (rabbits, pikas and hares) do not use telomere-directed replicative aging in vitro, PubMed [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 [0676] Purvis and Harvey (1995), Mammal life-history evolution: a comparative test of Charnov’s model [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 [0573] David Macdonald (1985), The Encyclopedia of Mammals [0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves
External resources
Integrated Taxonomic Information System	ITIS 180109
Animal Diversity Web	ADW account
Encyclopedia of Life	Search EOL
Genome Project	Search NCBI
Entrez	Search all databases Entrez Taxonomy search
Ageing literature	Search Google Scholar Search PubMed Search Scirus
Images	Google Image search
Internet	Search Google

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