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); cousseauae: Named for María Berta Cousseau of Dept. de Ciencias Marinas, Universidad Nacional de Mar del Plata.
Eponymy: Dr Maria Berta Cousseau is an Argentine ichthyologist who is Professor Emeritus at the Department of Sciences, Universidad Nacional de Mar del Plata, Argentina. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin démersal; profondeur 119 - 284 m (Ref. 55502). Subtropical
Southwestern Atlantic: Off northern Patagonian, off Mar del Plata, Argentina. Southeast Pacific: Chile.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 86.0 cm TL mâle / non sexé; (Ref. 55502)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
This species is distinguished by having the following characters: a large and very distinct round pale area ocellus-like, margined with dark brown on posterior part of each pectoral base of the upper side of the disc; upper surface of disc fully covered with numerous small spinules, also on interorbital area, tail, dorsal fins, and posterior pelvic lobes; larger individuals with scattered spinules distributed in central parts of the disc; ocular thorns absent; continuous row of 21-27 median thorns from nuchal; region to first dorsal fin; males have elongated, slender rod-shaped claspers; dorsal fin densely spinulose close to the end of tail and with no space between them (Ref. 55502).
Body shape (shape guide): other.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Díaz de Astarloa, J.M. and E. Mabragaña, 2004. Bathyraja cousseauae sp. n.: a new softnose skate from the southwestern Atlantic (Rajiformes, Rajidae). Copeia 2004(2):326-335. (Ref. 55502)
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=0.00562 (0.00298 - 0.01063), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
4.0 ±0.7 se; based on size and trophs of closest relatives |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
High vulnerability (61 of 100). 🛈 |