AnAge entry for Philander opossum

Classification (HAGRID: 02832)
Taxonomy	Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry) Order: Didelphimorphia Family: Didelphidae Genus: Philander
Species	Philander opossum
Common name	Gray four-eyed opossum
Lifespan, ageing, and relevant traits
Maximum longevity	4.4 years (captivity)
Source	ref. 671
Sample size	small
Data quality	acceptable
Observations	In the wild these animals may live up to 2 years. In captivity one specimen was at least 4.4 years when it died [0671].
Life history traits (averages)
Female sexual maturity	450 days
Male sexual maturity
Gestation
Weaning	82 days
Litter size	5 (viviparous)
Litters per year
Inter-litter interval	106 days
Weight at birth	0.2 g
Weight at weaning	110 g
Adult weight	450 g
Postnatal growth rate
Maximum longevity residual	35 %
Metabolism
Typical body temperature	309ºK or 35.8ºC or 96.4ºF
Basal metabolic rate	1.8860 W
Body mass	751.0 g
Metabolic rate per body mass	0.002511 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 [0522] Fisher et al. (2001), The ecological basis of life history variation in marsupials [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
External resources
Integrated Taxonomic Information System	ITIS 552584
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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