Chinook salmon

Oncorhynchus tshawytscha

Taxonomy
    • Osteichthyes
      • Salmoniformes
        • Salmonidae
          • Oncorhynchus tshawytscha
Distribution

Habitat
Temperature:
no data found yet
Salinity:
Sfresh to seawater
Photoperiod:
no data found yet
Substrate:
Syes
Trophic level:
Not investigated by FEB yet.
Growth
Length:
Not investigated by FEB yet.
Weight:
Not investigated by FEB yet.
Maturity:
S2.0-5.0 years
Malformations:
Syes
Morphology:
Not investigated by FEB yet.
Swimming
Home range:
S0.0004-0.002 ha
Depth:
S0.1-36.0+ m
Speed:
Not investigated by FEB yet.
Migration:
Sanadromous
Type:
Not investigated by FEB yet.
Reproduction
Nest building:
Syes
Courtship:
Syes
Mating type:
no data found yet
Fecundity:
Not investigated by FEB yet.
Brood care:
no data found yet
Social behaviour
Aggregation:
Sschool
Organisation:
Not investigated by FEB yet.
Aggression:
Syes
Handling
Farming frequency:
16,291 t/year 2018
Farming stress:
Syes
Slaughter protocol:
Syes

Farming remarks

Oncorhynchus tshawytscha
Li1  ❘  Po1  ❘  Ce2

Oncorhynchus tshawytscha is a Pacific salmon species distributed from northern Hokkaido to the Anadyr River on the Asian coast and from central California to Kotzebue Sound, Alaska, on the North American coast. Two morphotypes have been described, a "spring/stream" type that remains in the streams for a year and an "fall/ocean" type that migrates to the ocean a few weeks after hatching. O. tshawytscha is anadromous: eggs hatch in streams, juveniles (parr) live in streams for one or two years or a few weeks before migrating to the ocean. In the ocean, smolts grow into adults and either stay at the coast or migrate mostly up north. When they are close to maturity, they migrate back to their original streams to spawn in the autumn, independently of when they enter the stream. Females create several nests in a defended area called redd. O. tshawytscha dies after reproduction. Triploid breeds can be used to avoid the reproductive stage in farms. Because of their need to migrate as adults, it is unlikely that current farms can provide this welfare need. Further research needs to be done to accommodate this need into farming conditions and on living offshore (home range, aggregation, aggression, substrate). O. tshawytscha was successfully transplanted in New Zealand in the late 1800s, and nowadays New Zealand is the major exporting country of O. tshawytscha. Some populations in the USA are listed as endangered or threatened.





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