Ecology of Amblyraja radiata
Main Ref. Berestovskiy, E.G., 1990
Marine - Neritic
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
Marine - Oceanic
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Amblyraja radiata may be found.
Remarks A boreal to arctic species, living offshore on hard and soft bottoms at temperatures of -1.4-14°C. Epi- to mesobenthic, on clay and mud bottom from littoral zone to depths of more than 1,000 meters (Ref. 119696). Seasonal shoaling of juveniles assumed from bulk catch with great concentrations of juveniles found throughout the Gulf of Maine, Massachusetts Bay, the Bay of Fundy, the Scotian Shelf, and the perimeter of Georges Bank during spring and fall seasons; both the spring and fall 1978-2002 Massachusetts inshore trawl surveys show concentrations of juvenile thorny skate around Cape Ann and into Massachusetts Bay, and in Cape Cod Bay (Ref. 49751). Based on tagging experiments, does not appear to make seasonal migrations; known to be rather sedentary (Ref. 86779).


Substrate Ref.
Special habitats
Special habitats Ref.


Ref. Scott, W.B. and M.G. Scott, 1988
Associations shoaling;
Associated with
Association remarks Parasites of the species include 3 protozoans, 1 turbellarian, 1 monogenean, 1 trematode, 10 cestodes, 5 nematodes and 4 copepods, found on the skin, digestive tract and body cavity (Ref. 5951).
Parasitism outside hostinside host


Feeding type mainly animals (troph. 2.8 and up)
Feeding type ref Berestovskiy, E.G., 1990
Feeding habit hunting macrofauna (predator)
Feeding habit ref
Trophic level(s)
Original sample Unfished population Remark
Estimation method Troph s.e. Troph s.e.
From diet composition 4.20 0.27 3.89 0.58 Troph of adults from 5 studies.
Ref. Skjæraasen, J.E. and O.A. Bergstad, 2000
From individual food items 3.49 0.56 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Sa-a, Pascualita on 03.20.95
Modified by Capuli, Estelita Emily on 04.22.19
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