Western Fisheries Research Center

Publications

Below is a list of available WFRC peer reviewed and published science.

Filter Total Items: 2,353
Publication Thumbnail
Year Published: 2020

Wind River subbasin restoration: Annual report of US..Geological Survey activities, January 2018 through December 2018

We sampled juvenile wild Steelhead Oncorhynchus mykiss in headwater streams of the Wind River, WA, to characterize populations and investigate life-history metrics, particularly migratory patterns. We used Passive Integrated Transponder (PIT)-tagging and a series of instream PIT-tag interrogation systems (PTISs) to track juveniles. The Wind River...

Jezorek, Ian G.

Publication Thumbnail
Year Published: 2020

Increased prespawning mortality threatens an integrated natural- and hatchery-origin sockeye salmon population in the Lake Washington Basin

The life cycle of diadromous fishes such as salmonids involves natural mortality in a series of distinct life history stages, occurring sequentially in different habitats. Decades of research have emphasized mortality at the embryo, juvenile, and sub-adult stages but it is increasingly clear that some adults that survive and return to freshwater...

Barnett, Heidy K; Quinn, Thomas P.; Bhuthimethee, Mary; Winton, James

Publication Thumbnail
Year Published: 2020

Ichthyophonus sp. Infection in Opaleye (Girella nigricans)

Over a 3-year-period, 17 wild-caught opaleye (Girella nigricans) housed in a public display aquarium were found dead without premonitory signs. Grossly, 4 animals had pinpoint brown or black foci on coelomic adipose tissue. Histologically, liver, spleen, heart, and posterior kidney had mesomycetozoan granulomas in all cases; other organs were less...

LaDouceur, Elise E. B; St. Leger, Judy; Mena, Alexandria; Mackenzie, Ashley; Gregg, Jacob; Purcell, Maureen K.; Batts, William N.; Hershberger, Paul

Publication Thumbnail
Year Published: 2020

Infectious hematopoietic necrosis virus specialization in a multihost salmonid system

Many pathogens interact and evolve in communities where more than one host species is present, yet our understanding of host–pathogen specialization is mostly informed by laboratory studies with single species. Managing diseases in the wild, however, requires understanding how host–pathogen specialization affects hosts in diverse communities....

Paez, David; LaDeau, Shannon L.; Breyta, Rachel; Kurath, Gael; Naish, Kerry A.; Ferguson, Paige

Publication Thumbnail
Year Published: 2020

Modeling pathogen dispersal in marine fish and shellfish

Bio-physical models are a useful tool for understanding dispersal and transmission of marine pathogens. While utilized for larval dispersal models, they are only recently being used in epidemiological studies and are currently underutilized by the marine epidemiology field. Bio-physical models are useful for spatial planning and coastal...

Cantrell, Danielle L; Groner, Maya L.; Ben-Horin, Tal; Grant, Jon; Revie, Crawford W.

Publication Thumbnail
Year Published: 2020

Mortality of endangered juvenile Lost River Suckers associated with cyanobacteria blooms in mesocosms in Upper Klamath Lake, Oregon

Unsustainably high mortality within the first 2 years of life prevents endangered Lost River Suckers Deltistes luxatus in Upper Klamath Lake, Oregon, from recruiting to spawning populations. Massive blooms of the cyanobacterium Aphanizomenon flos‐aquae and their subsequent death and decay in the lake (bloom‐crashes) are...

Burdick, Summer M.; Hereford, Danielle M; Conway, Carla M.; Banet, Nathan V; Powers, Rachel L.; Martin, Barbara A.; Elliott, Diane G.

Publication Thumbnail
Year Published: 2020

Climate change vulnerability assessment for Pacific Lamprey in rivers of the Western United States

Pacific Lamprey (Entosphenus tridentatus) are a native anadromous species that, like salmon, historically returned to spawn in large numbers in watersheds along the west coast of the United States (U.S.). Lamprey play a vital role in river ecosystems and are one of the oldest vertebrates that have persisted over time likely influencing the...

Wang, Christina J; Shaller, Howard A; Coates, Kelly C.; Hayes, Michael C.; Rose, Robert K

Publication Thumbnail
Year Published: 2020

Revealing migration and reproductive habitat of invasive fish under an active population suppression program

Endemic species face a variety of threats including predation from non‐native invaders. In some cases, however, invasive species can be managed by directly suppressing populations, and tracking technologies that allow researchers to identify movement patterns and aggregations representative of the population can facilitate suppression activities....

Gutowsky, Lee F. G.; Romine, Jason G.; Heredia, Nicholas A.; Bigelow, Patricia E.; Parsley, Michael J.; Sandstrom, Philip T.; Suski, Cory D.; Danylchuk, Andy J.; Cooke, Steven J.; Gresswell, Robert E.

Publication Thumbnail
Year Published: 2020

A round-robin evaluation of the repeatability and reproducibility of environmental DNA assays for dreissenid mussels

Resource managers may be hesitant to make decisions based on environmental (e)DNA results alone since eDNA is an indirect method of species detection. One way to reduce the uncertainty of eDNA is to identify laboratory‐based protocols that ensure repeatable and reproducible results. We conducted a double‐blind round‐robin analysis of probe‐based...

Sepulveda, Adam J.; Hutchins, Patrick R.; Jackson, Craig; Ostberg, Carl; Laramie, Matthew; Amberg, Jon J.; Counihan, Timothy; Hoegh, Andrew B.; Pilliod, David

Publication Thumbnail
Year Published: 2020

Characterization of the genetic structure of four sucker species in the Klamath River. Final Report

Four species of suckers (family Catostomidae) inhabit the Klamath River Basin of Oregon and California: Lost River suckers (LRS; Deltistes luxatus), shortnose suckers (SNS; Chasmistes brevirostris), Klamath largescale suckers (KLS; Catostomus snyderi), and Klamath smallscale suckers (KSS; Catostomus rimiculus). All but Klamath smallscale suckers...

Smith, Matt; Von Bargen, Jennifer; Smith, Christian A.; Miller, Michael A.; Rasmussen, Josh; Hewitt, David A.
Smith, M., J. Von Bargen, C. Smith, M. Miller, J. Rasmussen, and D.A. Hewitt. 2020. Characterization of the genetic structure of four sucker species in the Klamath River. Final Report. U.S. Fish and Wildlife Service, Final Report, January 8, 2020. 32 p.

Publication Thumbnail
Year Published: 2020

A temporally stratified extension of space‐for‐time Cormack–Jolly–Seber for migratory animals

Understanding drivers of temporal variation in demographic parameters is a central goal of mark‐recapture analysis. To estimate the survival of migrating animal populations in migration corridors, space‐for‐time mark–recapture models employ discrete sampling locations in space to monitor marked populations as they move past monitoring sites,...

Hance, Dalton J.; Perry, Russell; Plumb, John; Pope, Adam

Publication Thumbnail
Year Published: 2020

Development of two quantitative PCR assays for detection of several Cottus species from environmental DNA in Pacific coast watersheds of North America

We developed two quantitative PCR assays for use with environmental DNA (eDNA) to detect numerous species in the genus Cottus that are indigenous to the Pacific coast watersheds of North America. We conducted in vitro assay validations on ten Cottus species and 32 potentially co-occurring non-Cottus species. We demonstrate...

Hoy, Marshal; Ostberg, Carl