AnAge entry for Macropus rufus

Classification (HAGRID: 02862)
Taxonomy	Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry) Order: Diprotodontia Family: Macropodidae Genus: Macropus
Species	Macropus rufus
Common name	Red kangaroo
Lifespan, ageing, and relevant traits
Maximum longevity	25 years (captivity)
Source	ref. 671
Sample size	large
Data quality	high
Observations	In the wild, these animals have been estimated to live up to 27 years [0434], which is plausible but unverified. There are also anecdotal reports of animals living more than 30 years. These animals are common in zoos, however, and record longevity in captivity is only 25 years [0671].
Life history traits (averages)
Female sexual maturity	517 days
Male sexual maturity	806 days
Gestation	33 days
Weaning	360 days
Litter size	1 (viviparous)
Litters per year
Inter-litter interval	241 days
Weight at birth	0.784 g
Weight at weaning	5,000 g
Adult weight	55,000 g
Postnatal growth rate	0.0075 days^-1 (from Gompertz function)
Maximum longevity residual	96 %
Metabolism
Typical body temperature	309ºK or 35.9ºC or 96.6ºF
Basal metabolic rate	31.3530 W
Body mass	28500.0 g
Metabolic rate per body mass	0.001100 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 [0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves
External resources
Integrated Taxonomic Information System	ITIS 552740
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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