AnAge Home Help Human Ageing Genomic Resources Citation

AnAge entry for Hydrurga leptonyx

Classification (HAGRID: 02573)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Carnivora
                Family: Phocidae
                    Genus: Hydrurga
SpeciesHydrurga leptonyx
Common nameLeopard seal

Lifespan, ageing, and relevant traits

Maximum longevityNot yet established
Observations

The 2 months delayed implantation increases the pregnancy period to 11 months [0443]. In the wild, females have been estimated to live for more than 26 years [0542]. Little is known about their longevity in captivity. One wild born animal was about 17.3 years when it died in captivity [0671]. Further studies are needed.

Life history traits (averages)

Female sexual maturity1,095 days
Male sexual maturity1,461 days
Gestation274 days
Weaning30 days
Litter size1 (viviparous)
Litters per year
Inter-litter interval
Weight at birth30,000 g
Weight at weaning
Adult weight367,750 g
Postnatal growth rate

Metabolism

No information on metabolism available.

References
[0671] Richard Weigl (2005), Longevity of Mammals in Captivity; from the Living Collections of the World
[0443] Ronald Nowak (2003), Walker's Marine Mammals of the World
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
[0542] Bernhard Grzimek (1990), Grzimek's Encyclopedia of Mammals

External resources

Integrated Taxonomic Information SystemITIS 180667
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

Search all databases

Entrez Taxonomy search

Ageing literature

Search Google Scholar

Search PubMed

Search Scirus

ImagesGoogle Image search
InternetSearch Google

AnAge database at the Human Ageing Genomic Resources.

If you find any missing or incorrect data, please contact us.