Amblyraja hyperborea

(COLLETT, 1879)


Arctic skate
Classification: Elasmobranchii Rajiformes Rajidae

Reference of the original description
COLLETT, R. (1879)
Fiske fra Nordhavs-Expeditionens sidste Togt, Sommeren 1878. Forhandlinger i Videnskabs-selskabet i Christiania (for 1878), 14: 1-106

Image of the original description
No image in first description.

Synonyms / new combinations and misspellings
Amblyraja cf. hyperborea, Raia borea, Raia hyperborea, Raja borea, Raja hyperborea, Raja (Amblyraja) hyperborea

Types
Amblyraja hyperborea
Holotype: ZMUO: J3134;
Raja borea
Syntype: BMNH: 1887.12.9.4 BMNH: 1887.12.9.1 BMNH: 1887.12.9.2 BMNH: 1887.12.9.3


Description:


Citation: Amblyraja hyperborea (COLLETT, 1879): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 10/2014

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Common names
spa Raya ártica, fra \(T\) Raie arctique, fra \(T\) Raie boréale, eng Arctic skate, eng Artic skate, eng Boreal skate, eng Darkbelly skate, eng Northern skate

Short Description
Grey-brown with large dark blotches [578]. Tail very short [578]. Mid-dorsal row of stout thorns which extend from nuchal region to first dorsal fin. Thorns close posterior to the pelvic girdle larger than along the tail [199]. Upper surface dark mouse gray, dark blue gray or dark brown with small rounded spots. Lower surface white and sooty in variable patterns [199]. Diet: Barents Sea (data base: of 48 stomachs examined): Arctic skate stomach contents consisted mainly of fish (~90% by mass), including herring (Clupea harengus), capelin and redfish (Sebastes spp). The portion of northern shrimp was also comparatively high (8.3% by mass), whereas that of fisheries waste did not exceed 2%. [5910];

Distribution
Northeast Atlantic: Spitsbergen to the Greenland-Iceland-Faroe-Shetland Ridge to northern Norway. Northwest Atlantic: Davis Strait between southwestern Greenland and Canada. Southeast Atlantic: southern tip of South Africa [1388]. Eastern Indian Ocean: off southern Australia [1388]. Southwest Pacific: New Zealand [1388]. Eastern Pacific: Costa Rica, Panama, Colombia, and Ecuador [1388].

Human uses
fisheries: of no interest

Biology
Oviparous, paired eggs are laid. Embryos feed solely on yolk [733]. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother [17086]. Found on the continental slope (Ref. 75154). Feeds on all kinds of bottom animals.

Size / Weight / Age
106 cm TL (male/unsexed; [1388])

Habitat
bathydemersal; marine; depth range 140 - 2500 m (Ref. 50610), usually 300 - 1500 m [7182]

Parasites (arranged by Jürgen Pollerspöck)
Monogenea
Nematoda
Copepoda