AnAge entry for Cystophora cristata
Classification (HAGRID: 02220)
- Taxonomy
-
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia (Taxon entry)
Order: Carnivora
Family: Phocidae
Genus: Cystophora
- Species
- Cystophora cristata
- Common name
- Hooded seal
- Synonyms
- Phoca cristata, Cystophora borealis, Phoca mitrata
Lifespan, ageing, and relevant traits
- Maximum longevity
- Not yet established
- Observations
The total gestation time, of approximately 11.5 months, includes a 4 months period of delayed implantation [0443]. In the wild, these animals have been estimated to live more than 35 years [0573]. Little is known about their longevity in captivity, though.
Life history traits (averages)
- Female sexual maturity
- 1,095 days
- Male sexual maturity
- 1,826 days
- Gestation
- 240 days
- Weaning
- 7 days
- Litter size
- 1 (viviparous)
- Litters per year
- 1
- Inter-litter interval
- 365 days
- Weight at birth
- 18,000 g
- Weight at weaning
- 43,300 g
- Adult weight
- 405,000 g
- Postnatal growth rate
Metabolism
No information on metabolism is available.
References
- [0978] Jones et al. (2009), PanTHERIA: a species-level database of life history, ecology, and geography of extant and recently extinct mammals
- [0443] Ronald Nowak (2003), Walker's Marine Mammals of the World
- [0610] Ernest (2003), Life history characteristics of placental non-volant mammals
- [0434] Ronald Nowak (1999), Walker's Mammals of the World
- [0538] Don Wilson and Sue Ruff (1999), The Smithsonian Book of North American Mammals
- [0441] William Burt et al. (1998), A Field Guide to Mammals
- [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 System
- ITIS 180657
- Animal Diversity Web
- ADW account (if available)
- Encyclopaedia of Life
- Search EOL
- NCBI Taxonomy
- Taxonomy ID 39293
- Entrez
- Search all databases
- Ageing Literature
- Search Google Scholar or Search PubMed
- Images
- Google Image search
- Internet
- Search Google