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AnAge entry for Lipotes vexillifer


Classification (HAGRID: 02654)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Cetacea (Taxon entry)
                Family: Iniidae
                    Genus: Lipotes
SpeciesLipotes vexillifer
Common nameYangzte river dolphin or baiji

Lifespan, ageing, and relevant traits

Maximum longevity24 years (captivity)
Sourceref. 671
Sample sizesmall
Data qualityquestionable
Observations

A highly endangered species, not much is known about the longevity of these animals. One captive specimen lived for 22.5 years [0671] and they can live up to 24 years in the wild [0443]. Nonetheless, their maximum longevity is likely underestimated.

Life history traits (averages)

Female sexual maturity2,920 days
Male sexual maturity
Gestation319 days
Weaning
Litter size1 (viviparous)
Litters per year0.5
Inter-litter interval
Weight at birth
Weight at weaning
Adult weight83,500 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
[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

External resources

Integrated Taxonomic Information SystemITIS 180409
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
Entrez

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Ageing literature

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