Elasmobranchi (squali e razze) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale; distribuzione batimetrica 10 - 800 m (Ref. 106604). Temperate; 67°N - 27°N, 25°W - 37°E
Eastern Atlantic (Iceland, southern Norway, Skagerrak and Morocco) and the Mediterranean Sea.
Records as far south to Mauritania and Senegal could not be verified due to lacking descriptions and specimens; most are probably misidentifications of Leucoraja leucosticta.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 120 cm TL maschio/sesso non determinato; (Ref. 4426); 117.0 cm TL (female); common length : 70.0 cm TL maschio/sesso non determinato; (Ref. 4426)
Spine dorsali (totale) : 0; Spine anali: 0. Snout short, its tip somewhat pronounced; upper surface entirely spinulose, about 8 thorns generally in a complete row around inner margin of eye and a triangle of thorns on nape or shoulder region; underside with prickles only on snout, between gill-slits, along abdomen, and at anterior margins of disc; tail only slightly longer than body; upper surface reddish-brown to dark brown with 4-6 creamy spots on each wing, underside white (Ref. 3167).
Body shape (shape guide): other; Cross section: flattened.
Found in offshore shelf waters and on upper slope, mainly around the 100 m line (Ref. 3167). Depth range from 70-275 m (Ref. 03167), and from 463-676 m in eastern Ionian Sea (Ref. 56504). Feed on all kinds of bottom animals (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 8.3-9.2 cm long and 4.6-5.3 cm wide (Ref. 41303, 41251, 41311). Maximum length for female is 117 cm (Ref. 41333).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). With no definite egg laying period (Ref. 3167). 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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: scarso interesse commerciale
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 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=0.00275 (0.00170 - 0.00446), b=3.20 (3.06 - 3.34), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.5 ±0.37 se; based on food items. |
Resilienza (Fonte Biblio. 120179) |
Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Fec assumed to be <100). |
Vulnerabilità della pesca (Ref. 59153) |
High to very high vulnerability (67 of 100). 🛈 |
Vulnerabilità climatica (Ref. 125649) |
Moderate to high vulnerability (48 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Medium.
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Nutrienti (Ref. 124155) |
Calcium = 4.74 [0.63, 82.48] mg/100g; Iron = 0.236 [0.022, 2.817] mg/100g; Protein = 15.9 [13.8, 17.8] %; Omega3 = 0.712 [0.315, 1.677] g/100g; Selenium = 17.7 [3.6, 87.5] μg/100g; VitaminA = 4.71 [0.36, 55.36] μg/100g; Zinc = 0.34 [0.02, 3.76] mg/100g (wet weight); |