Ecology Summary - Chiroteuthis veranii

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Ecology of Chiroteuthis veranii

Main Ref.	Jereb, P. and C.F.E. Roper, 2010
Remarks	Mesopelagic to bathypelagic as adults (Ref. 97142). Found on the upper slope at depths of 600-800 m (Ref. 1970). Frequently found in stomach contents of several species of bony fishes, sharks, mammals and seabirds; confirming that the species is common in its distributional areas, even though seldom captured by commercial fishing gear (e.g. trawls). Biology is poorly known; paralarvae and juveniles are epipelagic to mesopelagic and widespread in the water column. Possibly gregarious as numerous specimens are commonly captured together in deep net tows, a characteristic generally uncommon in deep sea squids (Ref. 97142).

Main Ref.

Jereb, P. and C.F.E. Roper, 2010

Remarks

Mesopelagic to bathypelagic as adults (Ref. 97142). Found on the upper slope at depths of 600-800 m (Ref. 1970). Frequently found in stomach contents of several species of bony fishes, sharks, mammals and seabirds; confirming that the species is common in its distributional areas, even though seldom captured by commercial fishing gear (e.g. trawls). Biology is poorly known; paralarvae and juveniles are epipelagic to mesopelagic and widespread in the water column. Possibly gregarious as numerous specimens are commonly captured together in deep net tows, a characteristic generally uncommon in deep sea squids (Ref. 97142).

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 Chiroteuthis veranii may be found.

Habitat

Substrate	Pelagic;
Substrate Ref.	Judkins, H.L.M., M. Vecchione and C.F.E. Roper, 2009
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.	Hoving, H.J.T., J.A.A. Perez, K.S.R. Bolstad, H.E. Braid, A.B. Evans, D. Fuchs, H. Judkins, J.T. Kelly, J.E.A.R. Marian, R. Nakajima, U. Piatkowski, A. Reid, M. Vecchione, J.C.C. Xavier, 2014
Feeding habit
Feeding habit Ref.

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	4.04	0.51			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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