| Scientific name: Centroscymnus owstonii |
| Nome comum: Xara-preta-de-natura |
| Common name: Roughskin dogfish |
| Classification: CHORDATA > ELASMOBRANCHII > Squaliformes > Somniosidae |
| Description: A medium-sized deepwater shark, with a moderately long snout. and stocky body. Dorsal fins with inconspicuous spines buried in the fins or with the tips protruding slightly. Large, mostly smooth lateral trunk denticles. Pectoral fins moderately large, with broadly rounded free rear tips. No anal fin. Caudal fin with a strong subterminal notch. Uniformly dark brown or black in colour. |
Global Distribution: Wide ranging but patchy distribution in the Atlantic, Pacific and Indian Oceans. In the Eastern Atlantic it is known from the Azores, Madeira, Canary Islands, Senegal and South Africa.
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| BIOLOGICAL FEATURES |
| Size: Size at birth 27-30 cm (total length). Maximum length 121 cm (TL). |
| Age: |
| Weight length rel.: Bayesian estimated length-weight: a=0.00407 (0.00182 - 0.00914), b=3.17 (2.97 - 3.37). |
| Growth type: |
| von Bertallanfy growth parameters: |
| Reproduction: Ovoviviparous, with 16 - 28 young per litter. |
| Maturity: range 100 - 104 cm. |
| Behavioural ecology: |
| Population structure & migrations: |
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| ECOLOGICAL FEATURES |
| Depth range: FishBase: 100 - 1500 m |
| Habitat: Bathydemersal. Found on upper continental slopes, on or near the bottom. |
| Feeding habits: Feeds on fish and cephalopods. |
| Trophic level: FishBase: 4.5 |
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| FISHERIES |
| Commercial interest: Minor commercial species. By-catch of the longline black scabbardfish fishery in Madeira. |
| Conservation status: Least concern. |
| Nutritional information & food safety: Health warning: high in mercury. |
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| REFERENCES |
Ebert D.A., Stehmann M.F.W. (2013). Sharks, batoids, and chimaeras of the North Atlantic. FAO Species Catalogue for Fishery Purposes, No. 7. FAO, Rome, 523 pp.
Froese, R., Pauly D., editors (2011) .FishBase. World Wide Web electronic publication. www.fishbase.org, (07/2014). www.fishbase.org/summary/Centroscymnus-owstonii.html
IUCN (2014). The IUCN Red List of Threatened Species. Version 2014.1. www.iucnredlist.org |
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