AnAge entry for Pusa sibirica

Classification (HAGRID: 01890)

Taxonomy
Kingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Phocidae
                    Genus: Pusa
Species
Pusa sibirica
Common name
Baikal seal
Synonyms
Phoca sibirica, Phoca vitulina sibirica

Lifespan, ageing, and relevant traits

Maximum longevity
56 years (captivity)
Source
ref. 671
Sample size
Small
Data quality
Acceptable
Observations

Including a period of delayed implantation, the total gestation lasts just over 9 months [0443]. Females breed until they are about 30 years old. One wild specimen was estimated to be 56 years old based on teeth annuli [0672]. Little is known about their longevity in captivity, but one specimen was still alive at 23.1 years of age [0671]

Life history traits (averages)

Female sexual maturity
2,129 days
Male sexual maturity
2,557 days
Gestation
273 days
Weaning
68 days
Litter size
1.02 (viviparous)
Litters per year
1
Inter-litter interval
365 days
Weight at birth
3,000 g
Weight at weaning
66,900 g
Adult weight
90,000 g
Postnatal growth rate
Maximum longevity residual
200%

Metabolism

No information on metabolism is available.

References

External Resources

Integrated Taxonomic Information System
ITIS 622020
Animal Diversity Web
ADW account
Encyclopaedia of Life
Search EOL
NCBI Taxonomy
Taxonomy ID 9719
Entrez
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Ageing Literature
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Internet
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