Elasmobranquios (tiburones y rayas) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
marino demersal; rango de profundidad ? - 100 m (Ref. 4426). Temperate; 55°N - 24°N, 16°W - 1°W
Northeast Atlantic, from the British Isles southwards to Gibraltar and north-western Africa (Western Sahara and Mauritania).
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 74.0, range 73 - ? cm
Max length : 87.0 cm TL macho / no sexado; (Ref. 6014); peso máximo publicado: 4.5 kg (Ref. 4699)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Espinas 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).
Body shape (shape guide): other; Cross section: flattened.
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).
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).
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)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: escaso valor comercial; pesca deportiva: si
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00479 (0.00302 - 0.00758), b=3.30 (3.17 - 3.43), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Nivel trófico (Referencia 69278) |
3.9 ±0.2 se; based on diet studies. |
Resiliencia (Referencia 120179) |
Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec= 54-61). |
Vulnerabilidad pesquera (Ref. 59153) |
Moderate to high vulnerability (53 of 100). 🛈 |
Vulnerabilidad climática (Ref. 125649) |
Very high vulnerability (88 of 100). 🛈 |
Categoría de precios (Ref. 80766) |
Medium.
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Nutrientes (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. |