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AnAge entry for Ommatophoca rossii

Classification (HAGRID: 02580)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Phocidae
                    Genus: Ommatophoca
SpeciesOmmatophoca rossii
Common nameRoss seal

Lifespan, ageing, and relevant traits

Maximum longevityNot yet established
Observations

The period of pre-implantation usually takes 3.5 to 4.5 months, increasing the gestation time up to 1 year. In the wild, these animals are believed to live up to 21 years [0573]. Their longevity in captivity has not been studied in detail and hence maximum longevity remains unknown.

Life history traits (averages)

Female sexual maturity1,095 days
Male sexual maturity1,278 days
Gestation228 days
Weaning30 days
Litter size1 (viviparous)
Litters per year1
Inter-litter interval
Weight at birth20,000 g
Weight at weaning
Adult weight177,000 g
Postnatal growth rate

Metabolism

No information on metabolism available.

References
[0443] Ronald Nowak (2003), Walker's Marine Mammals of the World
[0434] Ronald Nowak (1999), Walker's Mammals of the World
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
[0680] Wootton (1987), The effects of body mass, phylogeny, habitat, and trophic level on mammalian age at first reproduction
[0573] David Macdonald (1985), The Encyclopedia of Mammals

External resources

Integrated Taxonomic Information SystemITIS 180665
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

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Ageing literature

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