AnAge entry for Pagophilus groenlandicus
Classification (HAGRID: 02232)
- Taxonomy
-
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia (Taxon entry)
Order: Carnivora
Family: Phocidae
Genus: Pagophilus
- Species
- Pagophilus groenlandicus
- Common name
- Harp seal
- Synonyms
- Phoca groenlandica, Pagophilus groenlandicus oceanicus, Pagophilus groenlandicus groenlandicus, Phoca albicauda, Phoca albini, Phoca leucopla, Phoca semilunaris, Phoca oceanica
Lifespan, ageing, and relevant traits
- Maximum longevity
- Not yet established
- Observations
In the wild, these animals are believed to live for more than 30 years [0443]. Their longevity in captivity has not been studied in detail, but one specimen was still alive at about 16.3 years of age [0671]. Gestation does not include the 4-month delayed implantation period.
Life history traits (averages)
- Female sexual maturity
- 1,637 days
- Male sexual maturity
- 1,826 days
- Gestation
- 228 days
- Weaning
- 12 days
- Litter size
- 1.25 (viviparous)
- Litters per year
- Inter-litter interval
- 365 days
- Weight at birth
- 8,700 g
- Weight at weaning
- 34,580 g
- Adult weight
- 180,000 g
- Postnatal growth rate
- 0.0012 days-1 (from Gompertz function)
Metabolism
- Typical body temperature
- 309ºK or 36.3ºC or 97.3ºF
- Basal metabolic rate
- Not yet available
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
- [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 622022
- Animal Diversity Web
- ADW account
- Encyclopaedia of Life
- Search EOL
- NCBI Taxonomy
- Entrez
- Search all databases
- Ageing Literature
- Search Google Scholar or Search PubMed
- Images
- Google Image search
- Internet
- Search Google