Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Écologie

marin démersal; profondeur ? - 100 m (Ref. 4426). Temperate; 55°N - 24°N, 16°W - 1°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: southwestern England and Ireland to Rio de Oro in Western Sahara; absent from the North Sea and the Mediterranean.

Length at first maturity / Taille / Poids / Âge

Maturity: L_m 74.0, range 73 - ? cm
Max length : 87.0 cm TL mâle / non sexé; (Ref. 6014); poids max. publié: 4.5 kg (Ref. 4699)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Épines anales: 0. Eyes conspicuously small; dorsal fins close-set, no thorns between; upper surface predominantly spinulose, underside almost smooth in young, but head and centre of disc prickly in larger specimens; orbital thorns separate, a regular row of about 50 thorns from nape to first dorsal fin; upper surface greyish, olive to light brown with light blotches and long bands, underside white (Ref. 3167).

Found on sandy bottoms, from inshore waters to about 100 m in tidal areas (Ref. 3167). Feed on fishes (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 6.6-10.0 cm long and 4.1-6.3 cm wide (Ref. 41250). About 54-61 eggs are laid by an individual in a year (Ref. 41250).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

Référence principale Upload your references | Références | Coordinateur : McEachran, John | Collaborateurs

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Quasi-menacé (NT) ; Date assessed: 13 February 2006

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: intérêt commercial mineur; pêche sportive: oui

FAO - pêcheries: landings; Publication: search | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 123201): 10.4 - 15.4, mean 12 °C (based on 138 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00468 (0.00297 - 0.00738), b=3.30 (3.17 - 3.43), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.9 ±0.2 se; based on diet studies.

Résilience (Ref. 120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec= 54-61).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (55 of 100).

Climate Vulnerability (Ref. 125649): Very high vulnerability (88 of 100).

Catégorie de prix (Ref. 80766): Medium.

Nutrients (Ref. 124155): Calcium = 6.33 [0.91, 111.73] mg/100g; Iron = 0.25 [0.02, 2.91] mg/100g; Protein = 17 [14, 19] %; Omega3 = 0.847 [0.342, 2.086] g/100g; Selenium = 10.4 [2.2, 54.2] μg/100g; VitaminA = 6.1 [0.5, 70.5] μg/100g; Zinc = 0.354 [0.024, 3.858] mg/100g (wet weight); based on nutrient studies.

Raja microocellata Montagu, 1818