Common names from other countries
Élasmobranches (requins et raies) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335); hesperafricana: hesper (Greek)=the westerly, or evening quarter of the heavens; africanus (Latin)=of African distribution (Ref. 11284).
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin bathydémersal; profondeur 750 - 2000 m (Ref. 11284). Deep-water
Eastern Central Atlantic: Mauritania to Gabon.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 342 cm TL mâle / non sexé; (Ref. 11284)
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (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)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Preferred temperature (Ref.
115969): 3.5 - 4.5, mean 4.3 (based on 17 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 4.3 ±0.8 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).