Ecology Summary - Doryteuthis opalescens

Língua:

Ecologia de Doryteuthis opalescens

Ref. principal	Roper, C.F.E., M.J. Sweeney and C.E. Nauen, 1984
Notas	Individual behavior: pale coloration indicates relaxation while dark, high contrast chromatic elements indicate alertness; protracted inking occurs after an abrupt stop from a backward jetting squid; in swimming, drag is reduced from the tightening of fin curvature which reduces the fin span relative to the average fin chord; fins and arms were used to maneuver. Schooling and shoaling: schools at night were tighter than during the day (Ref. 94861).

Ref. principal

Roper, C.F.E., M.J. Sweeney and C.E. Nauen, 1984

Notas

Individual behavior: pale coloration indicates relaxation while dark, high contrast chromatic elements indicate alertness; protracted inking occurs after an abrupt stop from a backward jetting squid; in swimming, drag is reduced from the tightening of fin curvature which reduces the fin span relative to the average fin chord; fins and arms were used to maneuver. Schooling and shoaling: schools at night were tighter than during the day (Ref. 94861).

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	Estuários/lagunas/áreas estuarinas mangroves marshes/swamps	rivers/streams lakes/ponds Cavernas exclusively in caves

Highighted items on the list are where Doryteuthis opalescens may be found.

Habitat

Substrate	Benthic: mobile; demersal; Soft Bottom: sand; mud;
Substrate Ref.	Gotshall, D.W., 2005
Special habitats
Special habitats Ref.

Associations

Ref.	Roper, C.F.E., M.J. Sweeney and C.E. Nauen, 1984
Associations
Associated with
Association remarks
Parasitism

Alimentação

Tipo de alimentação	mainly animals (troph. 2.8 and up)
Feeding type Ref.	Karpov, K.A. and G.M. Cailliet, 1979
Hábito alimentar	hunting macrofauna (predator)
Feeding habit Ref.	Karpov, K.A. and G.M. Cailliet, 1979

Trophic Level(s)

Estimation method	Amostra original		População virgem (não pescada)		Nota
Estimation method	Troph	s.e.	Troph	s.e.	Nota
Da composição da dieta
Dos itens alimentares individuais	3.74	0.60			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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