AnAge entry for Erignathus barbatus

Classification (HAGRID: 02672)

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 is available.

References

External Resources

Integrated Taxonomic Information System
ITIS 180655
Animal Diversity Web
ADW account
Encyclopaedia of Life
Search EOL
NCBI Taxonomy
Taxonomy ID 39304
Entrez
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Ageing Literature
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Internet
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