Ecology Summary - Entosphenus macrostoma

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Main Ref.	Coker, G.A., C.B. Portt and C.K. Minns, 2001
Remarks	Spawns on shallow gravel bars in freshwater lakes or the mouths of creeks flowing into lakes. Ammocoetes larvae occur in silt, mud, or sand in quiet water (Ref 5723). Parasitic (Ref. 52559). Up to three adults have been recorded attached to a host. Adults are known experimentally to be able to survive in salt water, but apparently remain in fresh water despite the absence of barriers preventing access to the sea. Adults in spawning readiness collected from shallow gravel bars between 1 June and 23 August (Ref. 89241).

Main Ref.

Coker, G.A., C.B. Portt and C.K. Minns, 2001

Remarks

Spawns on shallow gravel bars in freshwater lakes or the mouths of creeks flowing into lakes. Ammocoetes larvae occur in silt, mud, or sand in quiet water (Ref 5723). Parasitic (Ref. 52559). Up to three adults have been recorded attached to a host. Adults are known experimentally to be able to survive in salt water, but apparently remain in fresh water despite the absence of barriers preventing access to the sea. Adults in spawning readiness collected from shallow gravel bars between 1 June and 23 August (Ref. 89241).

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 Entosphenus macrostoma may be found.

Habitat

Substrate	Soft Bottom: sand; mud; Hard Bottom;
Substrate Ref.	Page, L.M. and B.M. Burr, 1991
Special habitats
Special habitats Ref.

Associations

Ref.	Renaud, C.B., 2011
Associations	parasitism;
Associated with
Association remarks	Wounds produced known to penetrate deeply into the musculature or even reach the body cavity of hosts. Between 50 and 80% of fishes, mostly salmonids, in Lake Cowichan and Mesachie Lake show evidence of attacks from this lamprey, and based on the severity of the wounds inflicted, an estimated 15% of these attacks would probably result in the death of the host (Ref. 89241).
Parasitism	outside host ((Oncorhynchus clarkia and O. kisutch)

Feeding

Feeding type
Feeding type Ref.
Feeding habit	feeding on a host (parasite)
Feeding habit Ref.	Renaud, C.B., 2011

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
Ref.

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