Ecology of Oncorhynchus keta
Main Ref. Karpenko, V.I. and E.T. Nikolaeva, 1989
Remarks Juveniles are typically euryphagous. They feed on planktonic and benthic organisms. Food spectrum narrows during migration from the river to the sea. Diet composition is determined by river conditions and by the hydrological conditions of the coastal region of the sea, particularly the water level in the river and the tide cycle, as well as illumination at night (Ref. 9027).

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 Oncorhynchus keta may be found.


Substrate Ref.
Special habitats
Special habitats Ref.


Associated with
Association remarks


Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Karpenko, V.I. and E.T. Nikolaeva, 1989
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Karpenko, V.I. and E.T. Nikolaeva, 1989
Trophic Level(s)
Estimation method Original sample Unfished population Remark
Troph s.e. Troph s.e.
From diet composition 3.74 0.19 3.45 0.46 Troph of juv./adults from 3 studies.
From individual food items 3.54 0.41 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Sobolevskii, E.I. and I.A. Senchenko, 1996
(e.g. 346)
(e.g. cnidaria)
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