Ecology Summary - Acipenser fulvescens

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Main Ref.	Beamish, F.W.H., D.L.G. Noakes and A. Rossiter, 1998
Remarks	Inhabits bottom of lakes and large rivers (Refs. 10294, 117245), usually in 5-9 m depth (Ref. 117245), over mud, sand, and gravel. Occasionally enters brackish water. A specimen caught in 1952 was reputed to have been 152 years old (Ref. 6866). Search for food, with the aid of the sensory ability of the barbels, by constantly moving close to the substrate (Ref. 1998). Feeds on benthic organisms such as crayfishes, mollusks, and insect larvae, especially midges. Adult migrate up rivers to spawn (Ref. 10294). Can tolerate salinities of 15 ? 25 parts per mille (Ref. 117245).

Main Ref.

Beamish, F.W.H., D.L.G. Noakes and A. Rossiter, 1998

Remarks

Inhabits bottom of lakes and large rivers (Refs. 10294, 117245), usually in 5-9 m depth (Ref. 117245), over mud, sand, and gravel. Occasionally enters brackish water. A specimen caught in 1952 was reputed to have been 152 years old (Ref. 6866). Search for food, with the aid of the sensory ability of the barbels, by constantly moving close to the substrate (Ref. 1998). Feeds on benthic organisms such as crayfishes, mollusks, and insect larvae, especially midges. Adult migrate up rivers to spawn (Ref. 10294). Can tolerate salinities of 15 ? 25 parts per mille (Ref. 117245).

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 Acipenser fulvescens may be found.

Habitat

Substrate	Soft Bottom: sand; mud; Hard Bottom: rocky;
Substrate Ref.	Birstein, V.J., 1993
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.	Beamish, F.W.H., D.L.G. Noakes and A. Rossiter, 1998
Feeding habit	hunting macrofauna (predator)
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	3.28	0.49			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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