country information

Common names: [No common name]
Occurrence:
Salinity:
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information:
National Fisheries Authority:
Occurrences: Occurrences Point map
National Database:

Classification / Names

Élasmobranches (requins et raies) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

شِنين بحري بيضاء, 矛吻鳐, Raie blanche, ... more

Référence principale

McEachran, J.D. and K.A. Dunn. 1998. (Ref. 27314)
Références | Biblio | Coordinateur : McEachran, John | Collaborateurs

Taille / Poids / Âge

Max length : 230 cm TL mâle / non sexé; (Ref. 11284); 202.0 cm TL (female)

Environnement

; marin démersal; profondeur 30 - 600 m (Ref. 6808), usually 50 - 500 m (Ref. 26999)

Climat / Gamme

Subtropical, preferred ?; 56°N - 37°S, 19°W - 23°E

Distribution

Eastern Atlantic: Ireland and England southward round the Cape (South Africa) to central Mozambique (Ref. 5578), including western Mediterranean (to Tunisia and western Greece).
Pays | Zones FAO | Écosystèmes | Occurrences | Introductions

Description synthétique

A giant skate with a broad-based, abruptly narrow-tipped snout covered with small, sharp thorns; pectoral disc angular, and no thorns on nape or back, but three rows of large thorns on tail (Ref. 5578). Larger immature and adult individuals grey with numerous small white spots above, underside white with no black pores; hatchlings plain reddish-brown above, often with blue spots, and white below with broad dusky grey margins on disc (Ref. 5578).

Inhabit shelf and slope waters (Ref. 4426). Found on sand and rock-sand bottom (Ref. 6808). A bottom-predator of bony fishes, other elasmobranchs, fish offal, crabs, shrimps, mysids, octopi, and cuttlefish (Ref. 5578). Minimum depth reported taken from Ref. 4426. Maximum length for female is 202 cm (Ref. 41333). 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 12.5-18.3 cm long and 10.0-13.9 cm wide (Ref. 41250). About 55-156 eggs are produced per individual annually (Ref. 41250).

Statut dans la liste rouge de l'IUCN (Ref. 115185)

Menacé (EN) (A2cd+4cd)

Menace pour l'homme

Traumatogenic (Ref. 5578)

Utilisations par l'homme

Pêcheries: intérêt commercial mineur; pêche sportive: oui

Plus d'informations

Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
Stocks
Écologie
Régime alimentaire
Éléments du régime alimentaire
Consommation alimentaire
Ration

Noms communs
Synonymes
Métabolisme
Prédateurs
Écotoxicologie
Reproduction
Maturité
Frai
Fécondité
Œufs
Développement de l'œuf

Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
Morphologie
Larves
Dynamique des populations larvaires
Recrutement
Abondance

Références
Aquaculture
Profil d'aquaculture
Souches
Génétique
Fréquences alléliques
Héritabilité
Pathologies
Traitement
Mass conversion

Collaborateurs
Images
Stamps, Coins
Sons
Ciguatera
Vitesse
Type de nage
Surface branchiale
Otolithes
Cerveaux
Vision

Outils

Articles particuliers

Maintenance en aquarium | Articles sur l'espèce | Rapports d'aquaculture

Télécharger en XML

Page de résumé | Coordonnées géographiques | Noms communs | Photos

Sources Internet

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Niveau trophique (Ref. 69278)
4.4 ±0.83 se; Based on food items.

Résilience (Ref. 69278)
Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec=55)

Vulnérabilité (Ref. 59153)
Very high vulnerability (84 of 100)

Catégorie de prix (Ref. 80766)
Medium

Rostroraja alba (Lacepède, 1803)