Publications
Find out more about Species Management Research Program through our publications. Browse the entire list below or by specific topics at the links below.
Filter Total Items: 653
An experimental evaluation of the efficacy of imaging flow cytometry (FlowCam) for detecting invasive Dreissened and Corbiculid bivalve veligers
Zebra (Dreissena polymorpha) and quagga (D. bugensis) mussels, first introduced from central Asia into the Great Lakes of North America in the late 1980s, have crossed the continental divide and more recently spread across western North America. At the same time, several new technologies have been developed for the early detection of dreissenids, including the FlowCam, a digital imaging-in-flow in
Authors
Whitney Hassett, Julie Zimmerman, Gretchen Rollwagen-Bollens, Stephen M. Bollens, Timothy D. Counihan
Physiological and nutritional constraints on zooplankton productivity due to eutrophication and climate change predicted using a resource-based modeling approach
Emerging evidence suggests that zooplankton production is affected by physiological and nutritional constraints due to climate change and eutrophication, which in turn could have broad implications for food-web dynamics and fisheries production. In this study, we developed a resource-based zooplankton production dynamics model that causally links freshwater cladoceran and copepod daily production-
Authors
Chen Zhang, Michael T. Brett, Jens M Nielsen, George B Arhonditsis, Ashley P Ballantyne, Jackie L Carter, Jacob Kann, Dörthe C Müller-Navarra, Daniel E. Schindler, Jason D. Stockwell, Monika Winder, David Beauchamp
Disruption of the Francisella noatunensis orientalis pdpA gene results in virulence attenuation and protection in zebrafish
Several Francisella spp. including F. noatunensis are regarded as important emerging pathogens of wild and farmed fish. However, very few studies have investigated the virulence factors that allow these bacterial species to be pathogenic in fish. The Francisella Pathogenicity Island (FPI) is a well-described, gene-dense region encoding major virulence factors for the genus Francisella. PdpA is a m
Authors
John Hansen, Karina Ray, Po-Jui Chen, Susan Yun, Diane G. Elliott, Carla M. Conway, Michael Culcutt, Maureen K. Purcell, Timothy J Welch, John Patrick Bellah, Ellie Maureen Dalsky, Justin Blaine Greer, Esteban Soto
Annual recurrences of viral hemorrhagic septicemia epizootics in age 0 Pacific herring Clupea pallasii Valenciennes, 1847
Throughout a 20 year biosurveillance period, viral hemorrhagic septicemia virus was isolated in low titers from only 6/7355 opportunistically sampled adult Pacific herring, reflecting the typical endemic phase of the disease when the virus persists covertly. However, more focused surveillance efforts identified the presence of disease hot spots occurring among juvenile life history stages from cer
Authors
Paul Hershberger, Theodore R. Meyers, Jacob L. Gregg, Maya Groner, Sophie Amanda Hall, Hiruni T. Jayasekera, Ashley MacKenzie, Abigail S. Neat, Ella N. Piatt, Kyle A. Garver
From drought to deluge: Spatiotemporal variation in migration routing, survival, travel time and floodplain use of an endangered migratory fish
We developed a novel statistical model to relate the daily survival and migration dynamics of an endangered anadromous fish to river flow and water temperature during both extreme drought and severe flooding in an intensively managed river system. Our Bayesian temporally stratified multistate mark recapture model integrates over unobserved travel times and route transitions to efficiently estimate
Authors
Dalton Hance, Russell Perry, Adam Pope, Arnold J. Ammann, Jason L. Hassrick, Gabriel S. Hansen
Adult sockeye salmon responses to transplanting upstream of an impassable dam
The Yakama Nation manages a program for reintroducing Sockeye Salmon Oncorhynchus nerka upstream of Cle Elum Dam in the Yakima River basin. The program involves transplanting of a mix of adult Sockeye Salmon from two middle Columbia River donor stocks, Lake Wenatchee (WEN) and Osoyoos Lake (OSO), with the goal of establishing a self-sustaining population in the basin. In 2017, a subset of the tran
Authors
Tobias Kock, Scott D. Evans, Brian P. Saluskin, Andrew P. Matala, Richard Visser, Mark.V. Johnston, Peter F. Galbreath, Adam Pope
Evaluation of factors affecting migration success of adult sockeye salmon (Oncorhynchus nerka) in the Yakima River, Washington, 2020
A study was conducted during June–October 2020 to evaluate factors affecting the migration success of adult sockeye salmon (Oncorhynchus nerka) in the Yakima River, Washington. A total of 144 adult sockeye salmon were tagged and released during the study. Most fish (112 fish) were collected, tagged with passive integrated transponder (PIT), and released at the mouth of the Yakima River. The remain
Authors
Tobias J. Kock, Amy C. Hansen, Scott D. Evans, Richard Visser, Brian Saluskin, Andrew Matala, Paul Hoffarth
Taxonomic, temporal, and spatial variations in zooplankton fatty acid composition in Puget Sound, WA, USA
Fatty acid (FA) content and composition of zooplankton in Puget Sound, Washington (USA) was studied to investigate the nutritional quality of diverse zooplankton prey for juvenile salmon (Oncorhynchus spp.) in terms of their essential fatty acid (EFA) content. The study focus was on eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and arachidonic acid (ARA) as these are key FA needed to ma
Authors
Minna Hiltunen, Ursula Strandberg, Michael T. Brett, Amanda K. Winans, David Beauchamp, Miika Kotila, Julie E. Keister
Herring Disease Program - Annual Project Report 2012011-E, February 1, 2010-January 31, 2021
We will investigate fish health factors that may be contributing to the failed recovery of Pacific herring populations in Prince William Sound. Field samples will provide infection and disease prevalence data from Prince William Sound and Sitka Sound to inform the age structured assessment (ASA) model, serological data will indicate the prior exposure history and future susceptibility of herring t
Authors
Paul Hershberger, Maureen K. Purcell
Temperature variation and host immunity regulate viral persistence in a salmonid host
Environmental variation has important effects on host–pathogen interactions, affecting large-scale ecological processes such as the severity and frequency of epidemics. However, less is known about how the environment interacts with host immunity to modulate virus fitness within hosts. Here, we studied the interaction between host immune responses and water temperature on the long-term persistence
Authors
David J. Páez, Rachel L. Powers, Peng Jia, Natalia Ballesteros, Gael Kurath, Kerry A. Naish, Maureen K. Purcell
Effects of tidally varying river flow on entrainment of juvenile salmon into Sutter and Steamboat Sloughs
Survival of juvenile salmonids in the Sacramento–San Joaquin Delta (Delta) varies by migration route, and thus the proportion of fish that use each route affects overall survival through the Delta. Understanding factors that drive routing at channel junctions along the Sacramento River is therefore critical to devising management strategies that maximize survival. Here, we examine entrainment of a
Authors
Jason G. Romine, Russell Perry, Paul Stumpner, Aaron R. Blake, Jon R. Burau
Hydropeaking intensity and dam proximity limit aquatic invertebrate diversity in the Colorado River Basin
River biodiversity is threatened globally by hydropower dams, and there is a need to understand how dam management favors certain species while filtering out others. We examined aquatic invertebrate communities within the tailwaters 0–24 km downstream of seven large hydropower dams in the Colorado River Basin of the western United States. We quantified aquatic invertebrate dominance, richness, abu
Authors
Erin Abernathy, Jeffrey Muehlbauer, Theodore Kennedy, Jonathan D. Tonkin, Richard Van Driesche, David A. Lytle