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AnAge entry for Metachirus nudicaudatus


Classification (HAGRID: 02827)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Didelphimorphia
                Family: Didelphidae
                    Genus: Metachirus
SpeciesMetachirus nudicaudatus
Common nameBrown four-eyed opossum

Lifespan, ageing, and relevant traits

Maximum longevity3 years (captivity)
Sourceref. 671
Sample sizesmall
Data qualityacceptable
Observations

These animals are short-lived in captivity with a record longevity of 3 years [0671]. Without more detailed studies, however, their maximum longevity could be underestimated, and some anecdotal reports suggest they may live up to 4 years.

Life history traits (averages)

Female sexual maturity
Male sexual maturity
Gestation
Weaning
Litter size5 (viviparous)
Litters per year
Inter-litter interval365 days
Weight at birth
Weight at weaning
Adult weight440 g
Postnatal growth rate
Maximum longevity residual24 %

Metabolism

Typical body temperature308ºK or 35.0ºC or 95.0ºF
Basal metabolic rate1.1440 W
Body mass336.0 g
Metabolic rate per body mass0.003405 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

External resources

Integrated Taxonomic Information SystemITIS 552563
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

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Ageing literature

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ImagesGoogle Image search
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