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| Classification (HAGRID: 02570) | |
| Taxonomy | Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry) Order: Carnivora Family: Phocidae Genus: Erignathus |
| Species | Erignathus barbatus |
| Common name | Bearded seal |
Lifespan, ageing, and relevant traits | |
| Maximum longevity | Not yet established |
| Observations | The total gestation time includes a 2 months period of delayed implantation [0443]. The actual embryonic development takes about 8.5 months. In the wild, these animals have been reported to live up to 31 years [0573]. Their longevity in captivity has not been studied in detail and hence their maximum longevity must be classified as unknown. |
Life history traits (averages) | |
| Female sexual maturity | 1,712 days |
| Male sexual maturity | 2,223 days |
| Gestation | 259 days |
| Weaning | 28 days |
| Litter size | 1 (viviparous) |
| Litters per year | 1 |
| Inter-litter interval | 608 days |
| Weight at birth | 35,000 g |
| Weight at weaning | 75,750 g |
| Adult weight | 373,000 g |
| Postnatal growth rate | |
Metabolism | |
| No information on metabolism available. | |
References |
|
[0443] Ronald Nowak (2003), Walker's Marine Mammals of the World | |
External resources | |
| Integrated Taxonomic Information System | ITIS 180655 |
| Animal Diversity Web | ADW account |
| Encyclopedia of Life | Search EOL |
| Genome Project | Search NCBI |
| Entrez | |
| Ageing literature | |
| Images | Google Image search |
| Internet | Search Google |
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