Ecology Summary - Hoplostethus atlanticus

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Main Ref.	Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Remarks	Found on the continental slope (Ref. 75154). Orange roughy feed opportunistically on bentho-pelagic and meso-pelagic fish, crustaceans, and squid. Juveniles feed mainly on crustaceans whereas adults prefer fish and squids. They appear to have moderately high rates of food consumption (Ref. 27075). Dietary changes may be linked to modifications in morphology with growth (Ref. 27076). Little is known of the larvae and juveniles, which do not appear to aggregate (Ref. 6390).

Main Ref.

Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993

Remarks

Found on the continental slope (Ref. 75154). Orange roughy feed opportunistically on bentho-pelagic and meso-pelagic fish, crustaceans, and squid. Juveniles feed mainly on crustaceans whereas adults prefer fish and squids. They appear to have moderately high rates of food consumption (Ref. 27075). Dietary changes may be linked to modifications in morphology with growth (Ref. 27076). Little is known of the larvae and juveniles, which do not appear to aggregate (Ref. 6390).

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	estuaries/lagoons/brackish seas mangroves marshes/swamps	rivers/streams lakes/ponds caves exclusively in caves

Highighted items on the list are where Hoplostethus atlanticus may be found.

Habitat

Substrate	Hard Bottom;
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type	mainly animals (troph. 2.8 and up)
Feeding type Ref.	Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition	4.25	0.12			Troph of adults from 17 studies.
From individual food items	3.87	0.84			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Bulman, C.M. and J.A. Koslow, 1992

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