Élasmobranches (requins et raies) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Eponymy: Victor Sadowsky (1909–1990) was a Latvian-born Brazilian ichthyologist at Instituto Oceanográfico da Universidade de São Paulo. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin bathydémersal; profondeur 800 - 1360 m (Ref. 106604), usually 1200 - ? m (Ref. 27314). Deep-water
Southeast Pacific: Chile (Ref. 27540). Southwest Atlantic: off Brazil (Ref. 86346).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 75.0 cm TL mâle / non sexé; (Ref. 106604)
Holotype taken from a depth of 1200 m (Ref. 26282). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
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: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 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). |
Niveau trophique (Réf. 69278) |
3.7 ±0.5 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100). |
Vulnérabilité de la pêche (Ref. 59153) |
Moderate to high vulnerability (53 of 100). 🛈 |
Nutriments (Ref. 124155) |
Calcium = 7.64 [1.39, 39.72] mg/100g; Iron = 0.339 [0.081, 1.055] mg/100g; Protein = 16.4 [13.6, 19.1] %; Omega3 = 0.543 [0.159, 2.003] g/100g; Selenium = 16.1 [4.1, 52.2] μg/100g; VitaminA = 7.34 [1.81, 30.37] μg/100g; Zinc = 0.373 [0.185, 0.692] mg/100g (wet weight); |