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Northwest Fisheries Science Center (NWFSC) Environmental and Fisheries Sciences EFS - Fisheries Enhancement and Conservation

Information

Project
Redfish Sockeye
Title
Snake River Sockeye Salmon captive propagation
Description
This project is a crucial component of a gene rescue program established in 1991 for ESA-listed Snake River Sockeye salmon from Redfish Lake, Idaho. The program has consisted of taking most of the remaining gene pool into captive culture at specialized conservation hatcheries at the Manchester Research Station and the Idaho Department of Fish and Game Eagle Hatchery. Project efforts initially consisted of developing techniques for successful seawater culture of Sockeye salmon to adulthood, establishing rearing and spawning protocols to ensure preservation of genetic diversity, and improving fertilized egg to fry survival. Research in FY 2021 will focus on continuing to improve fecundity and egg quality, and optimizing feeding regimes to maximize survival and meet the primary objective of producing fish for recovery. During FY 2021 the project will continue to spawn adults, incubate eggs, rear juveniles in freshwater and smolts in seawater. In FY 2021 the project will supply our Idaho partners with hundreds of maturing fish for use in adult release programs and over 400,000 eyed eggs for rearing at smolt production facilities in Idaho. These efforts will continue to result in the return of thousands of adult ESA listed Sockeye salmon from the ocean and put this ESA listed stock on a path to recovery.

Data Sets

no data found

Research Themes

Recovery and rebuilding of marine and coastal species
The Pacific Northwest is home to several iconic endangered species, including Pacific salmon and killer whales, and several rockfish species. Mandates such as the Endangered Species Act, MagnusonStevens Act, and the Marine Mammal Protection Act, grant NOAA Fisheries the authority to manage the recovery of depleted species and stocks. The NWFSC contributes to species recovery through research, monitoring and analysis, providing NOAA managers and regional stakeholders the tools and information they need to craft effective regulations and develop sustainable plans for recovery.

Research Foci

Evaluate the effects of artificial propagation on recovery, rebuilding and sustainability of marine and anadromous species
Artificial propagation has the potential to provide benefits both to species recovery and to seafood sustainability. Artificial propagation also poses risks to wild species and ecosystems. In the past, the use of artificial propagation has been an important risk factor for several threatened and endangered species, particularly Pacific salmon. Assessing the effects of artificial propagation is complicated by the fact that programs vary widely in size, rearing practices, and goals. The NWFSC conducts critical research on the influence of artificial propagation on population dynamics, growth rate, ecology of infectious disease, and the evolutionary fitness of wild fish and other marine organisms. Results of this research are needed to support the recovery of fish populations and have been especially valuable in providing critical information for recent, larger scale habitat restoration activities such as the Elwha Dam removal. NWFSC will continue to conduct science that informs the discussion about whether to allow fish to recolonize naturally after barrier removal, or to supplement populations with hatchery fish and on the impacts of aquaculture on fishing pressure and practices, and on the surrounding environment and ecosystem.

Keywords

Artificial Propagation
The
Salmonid recovery
-
Snake River
research area
captive broodstocks
fish used for mating that have been produced in the hatchery

Products

Adult Snake River Sockeye Salmon for release in Recovery Actions
Some of the Project's maturing sockeye salmon (0-500) will be shipped to Idaho for release into Stanley Basin Lakes. These fish will be allowed to spawn on their own. This is an action called for in the Snake River Sockeye Salmon Recovery Plan
An annual report on project activities will be submitted to the Bonneville Power Administration
A report on project facility, fish culture and spawning activities will be submitted to the Bonneville Power Administration. The report will be published and available online through the Bonneville Power Administration.
Ongoing captive rearing of Broodyear 2015-2020 Snake River Sockeye Salmon.
All year long the project will continue to provide freshwater and seawater rearing of multiple broodyears of Snake River Sockeye Salmon. These ESA-listed fish will provide a safety net in the event no fish return from the sea and provide fish for use in recovery actions called for in the Snake River Sockeye Salmon Recovery Plan.
Produce Snake River Sockeye Salmon eyed eggs for use in recovery actions.
When the Snake River Sockeye Salmon eggs incubating at Burley Creek Hatchery reach the eyed stage they will be packaged and shipped to the Idaho Department of Fish and Game Springfield Hatchery. These eyed eggs will be incorporated into a production program that is generating smolts for release to Recover the ESA listed population.
Refine techniques for captive rearing and spawning.
Throughout the year the project will continue to develop and test fish culture techniques that improve fish survival, fecundity, and egg quality.
Spawn Snake River Sockeye Salmon to produce fertilized eggs for use in Recovery Actions.
Most of the Project's maturing Sockeye Salmon (500-1,200)will be spawned at Burley Creek Hatchery. The resulting fertilized eggs will be incubated to the eyed stage at this facility.
The project will collect data on the growth, survival, maturation age, fecundity, and egg weight of Snake River Sockeye Salmon maintained in captivitiy.
The project will add another year to a multiyear data set on the growth, survival, maturation age, fecundity and egg size of fish maintained and spawned in the program.

Taxa

Species Oncorhynchus nerka
kokanee, red salmon, sockeye salmon

People

Barry Berejikian
Program Manager
Brad Gadberry
Staff
Bryon Kluver
Staff
Deborah Frost
Staff
Deborah Frost
Staff
Desmond Maynard
Principal Investigator
Desmond Maynard
Principal Investigator
William McAuley
Co-Lead
William McAuley
Co-Lead