Ecology Summary - Catostomus commersonii

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Main Ref.	Scott, W.B. and E.J. Crossman, 1973
Remarks	Inhabits a wide range of habitats, from rocky pools and riffles of headwaters to large lakes. Usually occurs in small, clear, cool creeks and small to medium rivers. May be found at a depth greater than 45 m (Ref. 1998). Moves to shallower water near sunrise and sunset to feed. Fry (1.2 cm in length) feeds on plankton and other small invertebrates; bottom feeding commences upon reaching a length of 1.6-1.8 cm (Ref. 1998). Adult consumes benthic invertebrates, especially midge larvae, amphipods, and snails (Ref. 10294). Preyed upon by birds, fishes, lamprey, and mammals (Ref. 1998).

Main Ref.

Scott, W.B. and E.J. Crossman, 1973

Remarks

Inhabits a wide range of habitats, from rocky pools and riffles of headwaters to large lakes. Usually occurs in small, clear, cool creeks and small to medium rivers. May be found at a depth greater than 45 m (Ref. 1998). Moves to shallower water near sunrise and sunset to feed. Fry (1.2 cm in length) feeds on plankton and other small invertebrates; bottom feeding commences upon reaching a length of 1.6-1.8 cm (Ref. 1998). Adult consumes benthic invertebrates, especially midge larvae, amphipods, and snails (Ref. 10294). Preyed upon by birds, fishes, lamprey, and mammals (Ref. 1998).

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 Catostomus commersonii may be found.

Habitat

Substrate	Hard Bottom: rocky;
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

Feeding

Feeding type	plants/detritus+animals (troph. 2.2-2.79)
Feeding type Ref.	Scott, W.B. and E.J. Crossman, 1973
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	2.82	0.21	2.82	0.31	Troph of adults from 3 studies.
From individual food items	2.46	0.16			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.	Little, A.S., W.M. Tonn, R.F. Tallman and J.D. Reist, 1998

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Aquatic zones / Water bodies

Habitat

Associations

Feeding