AnAge entry for Eumetopias jubatus

Classification (HAGRID: 02666)

Taxonomy
Kingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Otariidae
                    Genus: Eumetopias
Species
Eumetopias jubatus
Common name
Northern sea lion
Synonyms
Phoca jubata, Otaria stellerii, Arctocephalus monteriensis

Lifespan, ageing, and relevant traits

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

The total gestation time of approximately 1 year includes a 3-4 months period of delayed implantation [0443]. In the wild, females have been estimated to live up to 30 years [0001]. Males live less due to fights with other males. Record longevity in captivity, however, belongs to one wild born male who was about 32.8 years of age when he died in captivity [0671].

Life history traits (averages)

Female sexual maturity
1,780 days
Male sexual maturity
2,420 days
Gestation
274 days
Weaning
279 days
Litter size
1 (viviparous)
Litters per year
1
Inter-litter interval
365 days
Weight at birth
19,000 g
Weight at weaning
106,610 g
Adult weight
415,000 g
Postnatal growth rate
Maximum longevity residual
92%

Metabolism

No information on metabolism is available.

References

External Resources

Integrated Taxonomic Information System
ITIS 180625
Animal Diversity Web
ADW account
Encyclopaedia of Life
Search EOL
NCBI Taxonomy
Taxonomy ID 34886
Entrez
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Ageing Literature
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Internet
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