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AnAge entry for Orcaella brevirostris

Classification (HAGRID: 02642)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Cetacea (Taxon entry)
                Family: Delphinidae
                    Genus: Orcaella
SpeciesOrcaella brevirostris
Common nameIrrawaddy dolphin

Lifespan, ageing, and relevant traits

Maximum longevity30 years (wild)
Sourceref. 624
Sample sizemedium
Data qualityacceptable
Observations

One study in the wild estimated age for 18 individuals with the oldest estimated to be around 30 years [0624].

Life history traits (averages)

Female sexual maturity1,826 days
Male sexual maturity1,826 days
Gestation426 days
Weaning471 days
Litter size1 (viviparous)
Litters per year
Inter-litter interval
Weight at birth12,300 g
Weight at weaning45,000 g
Adult weight190,000 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
[0624] Stacey and Arnold (1999), Orcaella brevirostris
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data

External resources

Integrated Taxonomic Information SystemITIS 180471
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

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Ageing literature

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