Ecology of Oncorhynchus kisutch
 
Main Ref. Scott, W.B. and E.J. Crossman, 1973
Distribution
Marine - Neritic
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
Marine - Oceanic
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
Brackishwater
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
Freshwater
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Oncorhynchus kisutch may be found.
Remarks The fish occur in the ocean or in lakes; adults return to the rivers where they were born (Ref. 27547). The young fish emerge in springtime and they usually live in fresh water for 1-2 years (sometimes up to 4 years, Ref. 27547); later they migrate at night to freshwater lakes or to the sea (Ref. 1998). Epipelagic (Ref. 58426). The fish that stay more than two years in fresh water and become sexually ripe without ever going to sea, are called residuals; they never spawn (Ref. 27547). Young fish in lakes and rivers eat mainly insects; they stay almost entirely in deep parts of the river and soon become strongly territorial (Ref. 27547). Upon reaching the sea, the smolts remain close to the coast for a certain time, eating planktonic crustaceans (Ref. 27547). As they grow, they migrate farther out into the sea and hunt larger organisms (Ref. 27547) such as jellyfish, squids and fishes (Ref. 58426). They are hunted by various fishes, birds (mergansers, loons and kingfishers), mammals and lampreys (Ref. 1998).

Substrate

Substrate
Substrate Ref.
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 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)
Original sample Unfished population Remark
Estimation method Troph s.e. Troph s.e.
From diet composition 4.22 0.73
Ref. Brodeur, R.D., 1991
From individual food items 4.18 0.70 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 346)
(e.g. cnidaria)
Entered by Palomares, Maria Lourdes D. on 12.15.92
Modified by Pablico, Grace Tolentino on 05.10.18
Checked by Miranda, Lilibeth on 05.11.01
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