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Beringraja binoculata  (Girard, 1855)

Big skate
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Beringraja binoculata
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Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates) > Rajinae
Etymology: Beringraja: Named for the Bering Sea, though to be the origin of the two species in this genus.;  binoculata: From the Latin 'bi' meaning two and 'oculata' meaning eyed - referring to the arrangement of pigment on the pectoral fin bases (Ref. 6885).   More on author: Girard.

Environment: milieu / climate zone / depth range / distribution range Écologie

; marin démersal; profondeur 3 - 800 m (Ref. 6793), usually 3 - 110 m (Ref. 2850).   Temperate; 61°N - 31°N, 165°W - 117°W (Ref. 55279)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North Pacific: Glubokaya Bay, Cape Navarin, and Stalemate Bank to Cedros Island, Baja California, Mexico.

Length at first maturity / Taille / Poids / Âge

Maturity: Lm ?, range 130 - ? cm
Max length : 244 cm TL mâle / non sexé; (Ref. 2850); common length : 180 cm TL mâle / non sexé; (Ref. 2850); poids max. publié: 91.0 kg (Ref. 2850)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 0; Rayons mous dorsaux (Total): 0; Épines anales 0; Rayons mous anaux: 0. Dorsal fins well back on tail, small; caudal and anal fins absent; pectorals broad, attached to snout and incorporated with body; pelvic fins large, moderately concave on free margins (Ref. 6885). Posterior sides of tail with a small fleshy keel on either side (Ref. 6885).

Biologie     Glossaire (ex. epibenthic)

Largest skate in North America (Ref. 2850). Feed on crustaceans and fishes (Ref. 6885). 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 22.8-30.5 cm long and 11.0-19.4 cm wide (Ref. 41249, 41300, 41357). Pectoral fins utilized for human consumption (Ref. 2850). Marketed fresh and frozen; eaten fried and baked (Ref. 9988).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Up to 7 embryos per egg case (Ref. 2850). Oviparous, 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).

Référence principale Upload your references | Références | Coordinateur : McEachran, John | Collaborateurs

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. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

Pêcheries: commercial; Aquarium: Aquariums publics
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 3.4 - 10.8, mean 6.8 (based on 512 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Niveau trophique (Ref. 69278):  3.9   ±0.64 se; Based on food items.
Résilience (Ref. 69278):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100).
Vulnérabilité (Ref. 59153):  Very high vulnerability (85 of 100) .
Catégorie de prix (Ref. 80766):   Medium.