Ecology of Osmerus mordax
 
Main Ref. Scott, W.B. and E.J. Crossman, 1973
Remarks Sensitive to temperature and light. Do not inhabit flowing waters of streams and rivers except at spawning time. Exhibit pronounced post-spawning mortality (Ref. 1998). Anadromous (Ref. 5951). It is preyed upon by mergansers, cormorants, gulls, crows, Atlantic cod, Atlantic salmon, brook trout, seals, lake trout, burbot, walleye and perch.

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 Osmerus mordax may be found.

Habitat

Substrate
Substrate Ref.
Special habitats
Special habitats Ref.

Associations

Ref. Scott, W.B. and M.G. Scott, 1988
Associations
Associated with
Association remarks Parasites of the species include Brachyphallus crenatus, Derogenes varicus and Hemiurus appendiculatus (trematodes); Proteocephalus sp. (cestode); Phocanema decipiens and Phocanema sp. Larva from the stomach and intestine (nematodes); Leptorhyncoides thecatus in the musculature, viscera, body cavity and mesenteries (acanthocephalan); and a copepod, Ergasilus funduli in the gills (Ref. 5951).
Parasitism

Feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Scott, W.B. and E.J. Crossman, 1973
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Scott, W.B. and E.J. Crossman, 1973
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 3.00 Troph of adults from 1 study.
From individual food items 3.44 0.51 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Mills, E.L., R. O'Gorman, E.F. Roseman, C. Adams and R.W. Owens, 1995
(e.g. 346)
(e.g. oophagy)
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