AnAge entry for Lontra canadensis
Classification (HAGRID: 02178)
- Taxonomy
-
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia (Taxon entry)
Order: Carnivora
Family: Mustelidae
Genus: Lontra
- Species
- Lontra canadensis
- Common name
- Northern river otter
- Synonyms
- Lutra canadensis
Lifespan, ageing, and relevant traits
- Maximum longevity
- 27 years (captivity)
- Source
- ref. 671
- Sample size
- Medium
- Data quality
- Acceptable
- 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 maturity
- 730 days
- Male sexual maturity
- 730 days
- Gestation
- 62 days
- Weaning
- 122 days
- Litter size
- 2.5 (viviparous)
- Litters per year
- 0.9
- Inter-litter interval
- 365 days
- Weight at birth
- 140 g
- Weight at weaning
- 1,510 g
- Adult weight
- 9,000 g
- Postnatal growth rate
- Maximum longevity residual
- 137%
Metabolism
- Typical body temperature
- 312ºK or 38.4ºC or 101.1ºF
- Basal metabolic rate
- Not yet available
References
- [1073] Jan Reed-Smith (2008), North American River Otter: Husbandry Notebook
- [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 System
- ITIS 180549
- Animal Diversity Web
- ADW account
- Encyclopaedia of Life
- Search EOL
- NCBI Taxonomy
- Taxonomy ID 76717
- Entrez
- Search all databases
- Ageing Literature
- Search Google Scholar or Search PubMed
- Images
- Google Image search
- Internet
- Search Google