Fall chinook spawning area development and disease prevention
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Fall chinook spawning area development and disease prevention by R. L. Garrison

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Published by Oregon State Game Commission in Portland, Or .
Written in English


  • Chinook salmon fisheries -- Oregon.,
  • Chinook salmon -- Diseases -- Oregon -- Prevention.,
  • Chinook salmon -- Oregon -- Spawning.,
  • Chinook salmon -- Diseases -- Oregon -- Control.,
  • Vibrio -- Oregon -- Prevention.,
  • Vibrio -- Control -- Oregon.

Book details:

Edition Notes

Other titlesSpawning area development for fall chinook and subsequent survival from egg deposition to seaward migration., Fall chinook spawning area development with subsequent survival from egg deposition to seaward migration., Construction of upstream-downstream weir and trap in an Alsea River tributary for enumeration of fall chinook and evaluation of gravel movement on spawning areas near gabion structures., Prevention and control of vibriosis in fall chinook salmon and related species in saltwater impoundments on the Oregon coast.
Statementprepared by Robert L. Garrison.
SeriesFederal aid progress reports, Annual progress report / Anadromous Fish Project, Job final report (Anadromous Fish Project)
ContributionsOregon. State Game Commission. Research Division.
The Physical Object
Pagination10, 16 leaves :
Number of Pages16
ID Numbers
Open LibraryOL16058050M

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Spawning activity was generally highest at project discharges between 1, and 2, m 3 /s in both spawning areas; spawning activity diminished as discharge increased from 3, to 4, m 3 /s. We concluded that fall Chinook salmon spawning activity in this regulated discharge environment was affected more by flow (and velocity) than by Cited by: Soft-egg disease was observed in the spawn from 5 of 15 landlocked fall chinook salmon Oncorhynchus tshawytscha from Lake Oahe, South Dakota, . Some fall Chinook salmon Oncorhynchus tshawytscha initiate spawning in the Snake River downstream of Hells Canyon Dam at temperatures that exceed 13°C and at intergravel dissolved oxygen concentrations that are less than 8 mg O 2 /L. Although water temperature declines and dissolved oxygen increases soon after spawning, the initial temperature and dissolved oxygen levels do not meet the Cited by: Technical Report: Spawning and abundance of fall chinook salmon (Oncorhynchus tshawytscha) in the Hanford Reach of the Columbia River, Spawning and abundance of fall chinook salmon (Oncorhynchus tshawytscha) in the Hanford Reach of the Columbia River,

• Identify the factors that affect spawning distribution and success. • Develop models to simulate spawning in the Feather River. Chinook Salmon Life History in the Feather River The lower Feather River has two runs of chinook salmon, the fall-run and spring-run. Adult fall-run typically return to the river to spawn during Sep-. The Chinook salmon / ʃ ɪ ˈ n ʊ k / (Oncorhynchus tshawytscha) is the largest species of Pacific salmon as well as the largest in the genus common name is derived from the Chinookan vernacular names for the species include king salmon, Quinnat salmon, spring salmon, chrome hog, and Tyee scientific species name is based on the Russian common name. Hatcheries and releases of hatchery reared salmonids into the wild can negatively impact wild populations through competition, predation, disease, and loss of fitness and genetic diversity. Hatchery influences are especially apparent to for anadromous species where dams blocked access to spawning habitat and hatcheries were established as. Chinook salmon are anadromous fish, which means they can live in both fresh and saltwater. Chinook salmon have a relatively complex life history that includes spawning and juvenile rearing in rivers followed by migrating to saltwater to feed, grow, and mature before returning to freshwater to spawn.

m Regulated harvest is believed to have no impact since the number of spawners in recent years (i.e., since ) exceeds the apparent spawning capacity of approximately 2, Chinook or 1, spawning pairs (see Fall-run Chinook Spawning table). n Pathological evaluations have only been conducted on juvenile Chinook salmon in the Stanislaus. Evaluate Spawning of Fall Chinook and Chum Salmon just Below the Four Lowermost Columbia River Mainstem Dams Project # Question # 1: The background statement should be enlarged to establish an understanding of the broader regional needs for flow and water management in the mainstem Columbia River. was conducted to detect any fall chinook salmon spawning and/or suitable spawning habitat in the area where the groundwater plume is projected to enter the Columbia River. Surveys were conducted in November , following the peak spawning of fall chinook salmon. Aerial surveys documented redds (spawning nests). spawning throughout the habitat normally used by fall chinook salmon. In the Snake River, spawning occurs throughout a river-mile (RM) reach between Asotin, Washington (RM ), and Hells Canyon Dam (RM ). The Captain John facility is located in the lower half of this reach, and Pittsburg Landing is in the upper half.