AnAge entry for Neophocaena phocaenoides

Classification (HAGRID: 02659)
Taxonomy	Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry) Order: Cetacea (Taxon entry) Family: Phocoenidae Genus: Neophocaena
Species	Neophocaena phocaenoides
Common name	Finless porpoise
Lifespan, ageing, and relevant traits
Maximum longevity	33 years (captivity)
Source	ref. 671
Sample size	small
Data quality	acceptable
Observations	Normally, these animals do not live more than 20 years. In Chinese waters, however, they reach sexual maturity at later ages (4-10 years) and also live longer [0443]. One captive specimen lived for 28.8 years [0671].
Life history traits (averages)
Female sexual maturity	2,190 days
Male sexual maturity	1,460 days
Gestation	320 days
Weaning	320 days
Litter size	1 (viviparous)
Litters per year	0.5
Inter-litter interval
Weight at birth	7,000 g
Weight at weaning	24,500 g
Adult weight	32,500 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 [0562] Jefferson et al. (2002), Growth and reproduction of the finless porpoise in southern China [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
External resources
Integrated Taxonomic Information System	ITIS 180478
Animal Diversity Web	ADW account
Encyclopedia of Life	Search EOL
Genome Project	Search NCBI
Entrez	Search all databases Entrez Taxonomy search
Ageing literature	Search Google Scholar Search PubMed Search Scirus
Images	Google Image search
Internet	Search Google

AnAge database at the Human Ageing Genomic Resources.

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