Ecology Summary - Harriotta raleighana

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Main Ref.	Last, P.R. and J.D. Stevens, 1994
Remarks	Dwells in soft or silty bottoms on continental slopes or abyssal areas. Associated with cold waters (2.5 to 10.9°C) and high salinities (34.1-35.6 psu). Adults and juveniles likely occupy different habitats. Preys on infauna in soft sediments while the presence of nektonic remains in some stomachs suggest active predation on epipelagic or pelagic organisms. It is an epibenthic predator and a scavenger in deep-water habitats. Oviparous (Ref. 117245). Found on the continental slope and ocean floor. Benthopelagic, occurs 600-2150 m depth (Refs. 58744, 117245). Appears to feed mainly on shellfish and crustaceans.

Main Ref.

Last, P.R. and J.D. Stevens, 1994

Remarks

Dwells in soft or silty bottoms on continental slopes or abyssal areas. Associated with cold waters (2.5 to 10.9°C) and high salinities (34.1-35.6 psu). Adults and juveniles likely occupy different habitats. Preys on infauna in soft sediments while the presence of nektonic remains in some stomachs suggest active predation on epipelagic or pelagic organisms. It is an epibenthic predator and a scavenger in deep-water habitats. Oviparous (Ref. 117245). Found on the continental slope and ocean floor. Benthopelagic, occurs 600-2150 m depth (Refs. 58744, 117245). Appears to feed mainly on shellfish and crustaceans.

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 Harriotta raleighana may be found.

Habitat

Substrate	Benthic; Pelagic; Soft Bottom: silt;
Substrate Ref.	Coad, B.W. and J.D. Reist, 2018
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.	Last, P.R. and J.D. Stevens, 1994
Feeding habit	hunting macrofauna (predator)
Feeding habit Ref.	Last, P.R. and J.D. Stevens, 1994

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	3.57	0.38			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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