Ecology Summary - Heteroteuthis dispar

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Ecology of Heteroteuthis dispar

Main Ref.	Jereb, P. and C.F.E. Roper (eds.), 2005
Remarks	Mesopelagic or benthopelagic, but also found on the bottom at depth range to 1588 m, paralarvae found in mesopelagic and bathypelagic zones, far from coasts, with bottom depth ranging between 1,500 and 3,000 m. Adults live in groups in lower epipelagic and mesopelagic zones, common at depths between 200 and 300 m. Often found in areas inhabited by populations of red shrimps. Represents a sizeable component of the diet of several top predators, including dolphins, sharks, swordfish and tunas. Caught by pelagic nets and shrimp trawlers but of no commercial interest due to the low quantities available to fisheries (Ref. 1695).

Main Ref.

Jereb, P. and C.F.E. Roper (eds.), 2005

Remarks

Mesopelagic or benthopelagic, but also found on the bottom at depth range to 1588 m, paralarvae found in mesopelagic and bathypelagic zones, far from coasts, with bottom depth ranging between 1,500 and 3,000 m. Adults live in groups in lower epipelagic and mesopelagic zones, common at depths between 200 and 300 m. Often found in areas inhabited by populations of red shrimps. Represents a sizeable component of the diet of several top predators, including dolphins, sharks, swordfish and tunas. Caught by pelagic nets and shrimp trawlers but of no commercial interest due to the low quantities available to fisheries (Ref. 1695).

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 Heteroteuthis dispar may be found.

Habitat

Substrate	Benthic: demersal; Pelagic;
Substrate Ref.	Jereb, P. and C.F.E. Roper (eds.), 2005
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.	Jereb, P. and C.F.E. Roper (eds.), 2005
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Jereb, P. and C.F.E. Roper (eds.), 2005

Trophic Level(s)

Estimation method	original sample		unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition
From individual food items	3.60	0.59			Tentative trophic level derived from 1 + troph of a single food item
Ref.

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