AnAge entry for Leptonychotes weddellii

Classification (HAGRID: 02676)

Taxonomy
Kingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Phocidae
                    Genus: Leptonychotes
Species
Leptonychotes weddellii
Common name
Weddell seal

Lifespan, ageing, and relevant traits

Maximum longevity
Not yet established
Observations

The total gestation time probably includes a period of delayed implantation [0443]. In the wild, females have been estimated to live up to 25 years [0542]. Their longevity in captivity has not been studied in detail. Muscular ageing has been observed in wild animals [0905].

Life history traits (averages)

Female sexual maturity
1,365 days
Male sexual maturity
1,642 days
Gestation
304 days
Weaning
40 days
Litter size
1 (viviparous)
Litters per year
Inter-litter interval
548 days
Weight at birth
29,000 g
Weight at weaning
115,900 g
Adult weight
425,000 g
Postnatal growth rate

Metabolism

No information on metabolism is available.

References

External Resources

Integrated Taxonomic Information System
ITIS 180669
Animal Diversity Web
ADW account
Encyclopaedia of Life
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NCBI Taxonomy
Taxonomy ID 9713
Entrez
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Ageing Literature
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