Western Fisheries Research Center

Publications

Filter Total Items: 2,251
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Year Published: 2019

Phylogeography and evolution of infectious hematopoietic necrosis virus in China

Infectious hematopoietic necrosis virus (IHNV) is a well-known rhabdoviral pathogen of salmonid fish. In this study, a comprehensive analysis of 40 IHNV viruses isolated from thirteen fish farms in nine geographically dispersed Chinese provinces during 2012 to 2017 is presented. Identity of nucleotide and amino acid sequences among all the...

Xu, Liming; Zhao, Jingzhuang; Liu, Miao; Kurath, Gael; Breyta, Rachel B.; Ren, Guangming; Yin, Jiasheng; Liu, Hongbai; Lu, Tongyan

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Year Published: 2019

Assessment of operational and structural factors influencing performance of fish collectors in forebays of high-head dams

Providing efficient downstream passage is critical for improving populations of migratory fishes in impounded river systems. High‐head dams, such as those used for water storage or flood‐risk management, pose unique passage challenges requiring unique solutions. Systems to collect fish in dam forebays (“forebay collectors”) for transport to...

Kock, Tobias; Verretto, Nicholas E; Ackerman, Nicklaus K; Perry, Russell; Beeman, John W; Garello, Michael C; Fielding, Scott D

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Year Published: 2019

Conceptualizing ecological responses to dam removal: If you remove it, what's to come?

One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objective, we synthesized information from empirical studies and ecological theory into conceptual models that depict key physical and biological links driving ecological responses to removing dams. We...

Bellmore, J. Ryan; Pess, George R.; Duda, Jeffrey J.; O'Connor, Jim E.; East, Amy E.; Foley, Melissa M.; Wilcox, Andrew C.; Major, Jon J.; Shafroth, Patrick B.; Morley, Sarah A.; Magirl, Christopher S.; Anderson, Chauncey W.; Evans, James E.; Torgersen, Christian E.; Craig, Laura S.

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Year Published: 2019

A Bayesian life-cycle model to estimate escapement at maximum sustained yield in salmon based on limited information

Life-cycle models combine several strengths for estimating population parameters and biological reference points of harvested species and are particularly useful for those exhibiting distinct habitat shifts and experiencing contrasting environments. Unfortunately, time series data are often limited to counts of adult abundance and harvest. By...

Ohlberger, Jan; Brinkman, Samuel J.; Crain, Patrick; Pess, George R.; Duda, Jeffrey J.; Buehrens, Thomas W.; Quinn, Thomas P.; Hilborn , Ray

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Year Published: 2019

Wind River subbasin restoration annual report of USGS activities January 2017 through December 2017

We used Passive Integrated Transponder (PIT)-tagging and a series of instream PIT-tag interrogation systems (PTISs) to investigate life-histories, populations, and efficacy of habitat restoration actions for wild Steelhead Oncorhynchus mykiss in the Wind River subbasin, WA. No hatchery Steelhead have been planted in the Wind River...

Jezorek, Ian
Jezorek, I.G. 2018. Wind River Subbasin Restoration, 01/01/2017 - 12/31/2017 Annual Report, 1998-019-00. Bonneville Power Administration. 53 p.

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Year Published: 2019

Identifying optimal hauling densities for adult Chinook Salmon trap and haul operations

Trap and haul programs are used to conserve fish populations by circumventing high mortality locations or events, and enhancing population abundance by reintroducing fish to historical habitats and mitigating for fish passage limitations. Spring run Chinook Salmon are transported in trucks upstream of barrier dams in Willamette River Tributaries...

Michael Colvin; Peterson, James; Sharpe, Cameron; Kent, Michael L.; Schreck, Carl B.

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Year Published: 2019

Herring Disease Program, February 1, 2018 - January 31, 2019

This report describes our laboratory and field results for the period February 1, 2018-January 31, 2019.

Hershberger, Paul; Purcell, Maureen

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Year Published: 2019

Exxon Valdez oil spill long-term herring research and monitoring program final report

This study includes annual field surveys of Ichthyophonus, viral hemorrhagic septicemia virus, and erythrocytic necrosis virus in adult and juvenile Pacific herring (Clupea pallasii) in Prince William Sound, Alaska and several reference populations in Alaska, British Columbia, and Washington. Results from controlled experimental studies with...

Hershberger, Paul

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Year Published: 2018

Morphodynamic evolution following sediment release from the world’s largest dam removal

Sediment pulses can cause widespread, complex changes to rivers and coastal regions. Quantifying landscape response to sediment-supply changes is a long-standing problem in geomorphology, but the unanticipated nature of most sediment pulses rarely allows for detailed measurement of associated landscape processes and evolution. The intentional...

Ritchie, Andrew C.; Warrick, Jonathan A.; East, Amy E.; Magirl, Christopher S.; Stevens, Andrew W.; Bountry, Jennifer A.; Randle, Timothy J.; Curran, Christopher A.; Hilldale, Robert C.; Duda, Jeffrey J.; Miller, Ian M.; Pess, George R.; Eidam, Emily; Foley, Melissa M.; McCoy, Randall; Ogston, Andrea S.

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Year Published: 2018

Efficacy of injectable tulathromycin for reduction of vertical transmission of Renibacterium salmoninarum in Spring Chinook Salmon Oncorhynchus tshawytscha

Bacterial kidney disease (BKD) caused by Renibacterium salmoninarum (Rs) occurs nearly worldwide where wild or cultured salmonid fishes are present. Control of BKD is confounded by its two modes of transmission, horizontal (fish-to-fish) and vertical (from female parent to progeny via the eggs). A highly successful BKD control strategy employed in...

Elliott, Diane

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Year Published: 2018

A natural‐origin steelhead population's response to exclusion of hatchery fish

It is asserted that reduction or elimination of hatchery stocking will increase natural‐origin salmon Oncorhynchus spp. and steelhead O. mykiss production. We conducted an analysis of steelhead population census data (1958–2017) to determine whether elimination of summer steelhead stocking in the upper Clackamas River in 1998 increased the...

Courter, Ian I; Wyatt, Garth J; Perry, Russell; Plumb, John; Carpenter, Forrest M; Ackerman, Nicklaus K; Lessard, Robert B; Galbreath, Peter F

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Year Published: 2018

Intensive oyster aquaculture can reduce disease impacts on sympatric wild oysters

Risks associated with disease spread from fish and shellfish farming have plagued the growth and public perception of aquaculture worldwide. However, by processing nutrients and organic material from the water column, the culture of many suspension-feeding bivalves has been proposed as a novel solution toward mitigating problems facing coastal...

Ben-Horin, Tal; Burge, Colleen A.; Bushek, David; Groner, Maya L.; Proestou, Dina A.; Huey, Lauren I.; Bidegain, Gorka; Carnegie, Ryan B.