Ecology Summary - Amblyraja radiata

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Referencia principal	Berestovskiy, E.G., 1990
Observaciones	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). Benthic, inhabiting substrates from sand to mud and pebbles to broken shells. Dwells on the continental shelf at depths between 5-1540m. Found in water temperatures between -1.4°C to 14°C. Feeds at a trophic level of about 3.82 (Ref. 117245).

Referencia principal

Berestovskiy, E.G., 1990

Observaciones

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). Benthic, inhabiting substrates from sand to mud and pebbles to broken shells. Dwells on the continental shelf at depths between 5-1540m. Found in water temperatures between -1.4°C to 14°C. Feeds at a trophic level of about 3.82 (Ref. 117245).

Aquatic zones / Water bodies

	Marine - Neritic	Marine - Oceanic	Brackishwater	Freshwater
Marine zones / Brackish and freshwater bodies	supra-littoral zone littoral zone sublittoral zone	epipelagic mesopelagic epipelagic abyssopelagic hadopelagic	Estuarios/lagunas/mares salobres mangroves marshes/swamps	rivers/streams lakes/ponds Cuevas exclusivamente

Highighted items on the list are where Amblyraja radiata may be found.

Habitat

Substrate	Benthic; Soft Bottom: sand; mud; Hard Bottom: rubble;
Substrate Ref.	Coad, B.W. and J.D. Reist, 2018
Special habitats
Special habitats Ref.

Associations

Referencia	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

Alimentación

Tipo De Alimentación	mainly animals (troph. 2.8 and up)
Feeding type Ref.	Berestovskiy, E.G., 1990
Hábito De Alimentación	hunting macrofauna (predator)
Feeding habit Ref.

Trophic Level(s)

Estimation method	Muestra original		Población no pescada		Observación
Estimation method	Troph	s.e.	Troph	s.e.	Observación
De la composición de la dieta	4.20	0.27	3.89	0.58	Troph of adults from 5 studies.
De tipos individuales de alimento	4.50	1.07			Trophic level estimated from a number of food items using a randomized resampling routine.
Referencia	Skjæraasen, J.E. and O.A. Bergstad, 2000

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