AnAge entry for Phoca vitulina
Classification (HAGRID: 02234)
- Taxonomy
-
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia (Taxon entry)
Order: Carnivora
Family: Phocidae
Genus: Phoca
- Species
- Phoca vitulina
- Common name
- Harbor seal
Lifespan, ageing, and relevant traits
- Maximum longevity
- 47.6 years (captivity)
- Source
- ref. 671
- Sample size
- Medium
- Data quality
- Acceptable
- Observations
In the wild, these animals are believed to live up to 40 years [0542]. One wild born specimen was about 47.6 years of age when it died in captivity [0671].
Life history traits (averages)
- Female sexual maturity
- 1,095 days
- Male sexual maturity
- 1,460 days
- Gestation
- 253 days
- Weaning
- 30 days
- Litter size
- 1 (viviparous)
- Litters per year
- 1
- Inter-litter interval
- 365 days
- Weight at birth
- 11,000 g
- Weight at weaning
- 23,945 g
- Adult weight
- 115,000 g
- Postnatal growth rate
- 0.0013 days-1 (from Gompertz function)
- Maximum longevity residual
- 163%
Metabolism
- Typical body temperature
- 310ºK or 36.7ºC or 98.1ºF
- Basal metabolic rate
- 73.2900 W
- Body mass
- 27400.0 g
- Metabolic rate per body mass
- 0.002675 W/g
References
- [1032] McNab (2008), An analysis of the factors that influence the level and scaling of mammalian BMR (PubMed)
- [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
- [0443] Ronald Nowak (2003), Walker's Marine Mammals of the World
- [0441] William Burt et al. (1998), A Field Guide to Mammals
- [0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
- [0542] Bernhard Grzimek (1990), Grzimek's Encyclopedia of Mammals
- [0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves
External Resources
- Integrated Taxonomic Information System
- ITIS 180649
- Animal Diversity Web
- ADW account
- Encyclopaedia of Life
- Search EOL
- NCBI Taxonomy
- Taxonomy ID 9720
- Entrez
- Search all databases
- Ageing Literature
- Search Google Scholar or Search PubMed
- Images
- Google Image search
- Internet
- Search Google