AnAge entry for Squalus acanthias

Classification (HAGRID: 02225)
Taxonomy	Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes (Taxon entry) Order: Squaliformes Family: Squalidae Genus: Squalus
Species	Squalus acanthias
Common name	Spur dogfish
Synonyms	Acanthias suckleyi, Spinax suckleyi, Squalus suckleyi, Squalus fernandinus, Koinga kirki
Lifespan, ageing, and relevant traits
Maximum longevity	75 years (wild)
Source	ref. 822
Sample size	medium
Data quality	acceptable
Observations	These animals take about 20 years to reach sexual maturity and are extremely long-lived [0523]. Although their exact longevity is unknown, some estimates indicate these animals can live up to 50-75 years [0022].
Life history traits (averages)
Female sexual maturity	7,668 days
Male sexual maturity	3,163 days
Litter size	8 (viviparous)
Interbirth interval	730 days
Adult weight	5,005 g
Metabolism
No information on metabolism available.
References
[0822] Garcia et al. (2008), The importance of habitat and life history to extinction risk in sharks, skates, rays and chimaeras, PubMed [0022] Cailliet et al. (2001), Age determination and validation studies of marine fishes: do deep- dwellers live longer?, PubMed [0523] Das (1994), Age determination and longevity in fishes, PubMed [0369] Siezen (1989), Eye lens aging in the spiny dogfish (Squalus acanthias) I. Age determination from lens weight, PubMed [0370] Doyle (1968), Ageing changes in cartilage from Squalus acanthias L, PubMed [0454] FishBase
External resources
Integrated Taxonomic Information System	ITIS 160617
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

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