Elasmobranchi (squali e razze) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Eponymy: Dr Henry Bryant Bigelow (1879–1967) was an American zoologist. [...] (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino batidemersale; distribuzione batimetrica 650 - 4156 m (Ref. 4426), usually 1500 - ? m (Ref. 3167). Deep-water; 60°N - 10°N
Eastern Atlantic: Rockall Trough along Ireland, northern Bay of Biscay, northern Morocco and Azores, off Rio de Oro (Western Sahara) and Conakry (Guinea). Western Atlantic: Grand Banks off Newfoundland, Canada southward to northeastern Gulf of Mexico. Distribution probably much wider in deep water.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 55.0 cm TL maschio/sesso non determinato; (Ref. 4426)
Found on continental slopes and deepwater rises (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 5.3 cm long and 3.0 cm wide (Ref. 41249).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: bycatch
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=0.00309 (0.00144 - 0.00663), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.6 ±0.5 se; based on size and trophs of closest relatives |
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) |
Moderate to high vulnerability (47 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Medium.
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Nutrienti (Ref. 124155) |
Calcium = 5.55 [0.81, 110.64] mg/100g; Iron = 0.332 [0.031, 4.526] mg/100g; Protein = 15 [13, 17] %; Omega3 = 0.536 [0.211, 1.385] g/100g; Selenium = 20.2 [3.3, 98.8] μg/100g; VitaminA = 4.85 [0.35, 64.69] μg/100g; Zinc = 0.307 [0.021, 3.539] mg/100g (wet weight); |