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AnAge entry for Lontra canadensis

Classification (HAGRID: 02527)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Mustelidae
                    Genus: Lontra
SpeciesLontra canadensis
Common nameNorthern river otter
SynonymsLutra canadensis

Lifespan, ageing, and relevant traits

Maximum longevity27 years (captivity)
Sourceref. 671
Sample sizemedium
Data qualityacceptable
Observations

There is a delayed implantation and thus the total gestation time varies from 290 to 380 days. The actual embryonic development takes about 60-63 days [0443]. One wild born female was as old as 27 when she died in captivity [0671].

Life history traits (averages)

Female sexual maturity730 days
Male sexual maturity730 days
Gestation62 days
Weaning122 days
Litter size2.5 (viviparous)
Litters per year0.9
Inter-litter interval365 days
Weight at birth140 g
Weight at weaning1,510 g
Adult weight9,000 g
Postnatal growth rate
Maximum longevity residual137 %

Metabolism

No information on metabolism available.

References
[0671] Richard Weigl (2005), Longevity of Mammals in Captivity; from the Living Collections of the World
[0443] Ronald Nowak (2003), Walker's Marine Mammals of the World
[0610] Ernest (2003), Life history characteristics of placental non-volant mammals
[0434] Ronald Nowak (1999), Walker's Mammals of the World
[0538] Don Wilson and Sue Ruff (1999), The Smithsonian Book of North American Mammals
[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

External resources

Integrated Taxonomic Information SystemITIS 180549
Animal Diversity WebADW account
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