Ecology Summary - Euthynnus alletteratus

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Main Ref.	Collette, B.B. and C.E. Nauen, 1983
Remarks	Found in neritic waters close inshore (Ref. 13628). This schooling species is an opportunistic predator which feeds on virtually everything within its range, i.e. crustaceans, fishes (mainly clupeoid), squids, heteropods and tunicates. School by size together with other scombrids but have a tendency to scatter during certain periods of the year. Varied diet and target in all prey although with a certain preference for pelagic species (Ref. 28173).

Main Ref.

Collette, B.B. and C.E. Nauen, 1983

Remarks

Found in neritic waters close inshore (Ref. 13628). This schooling species is an opportunistic predator which feeds on virtually everything within its range, i.e. crustaceans, fishes (mainly clupeoid), squids, heteropods and tunicates. School by size together with other scombrids but have a tendency to scatter during certain periods of the year. Varied diet and target in all prey although with a certain preference for pelagic species (Ref. 28173).

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 Euthynnus alletteratus may be found.

Habitat

Substrate
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.	Collette, B.B. and C.E. Nauen, 1983
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Collette, B.B. and C.E. Nauen, 1983

Trophic Level(s)

Estimation method	Original sample		Unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition	4.49		4.32	0.71	Troph of adults from 1 study.
From individual food items	3.98	0.60			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Bowman, R.E., C.E. Stillwell, W.L. Michaels and M.D. Grosslein, 2000

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