Drivers of Ecosystem Change
Restoration Ecology and Species Recovery
Western Fisheries Research Center
Research at the WFRC focuses on the environmental factors responsible for the creation, maintenance, and regulation of fish populations including their interactions in aquatic communities and ecosystems. Within these pages you will find research information on Pacific salmon; western trout, charr, and resident riverine fishes; desert and inland fishes; aquatic ecosystems and their resources.
Peer Reviewed Publications
Peer Reviewed Publications
Dive into our research through our rich and diverse publications.
News
Something Fishy from the Western Fisheries Research Center - Summer 2025
Something Fishy from the Western Fisheries Research Center - Summer 2025
Expanding the Science of 6PPD-Quinone: A New Highly Sensitive Species
Expanding the Science of 6PPD-Quinone: A New Highly Sensitive Species
From Egg to Adult: WFRC’s Work to Support California’s Chinook Salmon Population
From Egg to Adult: WFRC’s Work to Support California’s Chinook Salmon Population
Publications
Evaluation of 6PPD-quinone lethal toxicity and sublethal effects on disease resistance and swimming fitness in coastal cutthroat trout (Oncorhynchus clarkii clarkii) Evaluation of 6PPD-quinone lethal toxicity and sublethal effects on disease resistance and swimming fitness in coastal cutthroat trout (Oncorhynchus clarkii clarkii)
6PPD-quinone (6PPDQ), derived from the tire-protectant 6PPD reacting with ozone, is an emerging contaminant of concern owing to its role in coho salmon (Oncorhynchus kisutch) deaths via urban runoff mortality syndrome (URMS). Given the impact of 6PPDQ on aquatic life in urban streams, we addressed the acute toxicity of 6PPDQ exposure on coastal cutthroat trout (CCT) (Oncorhynchus clarkii...
Novel adomaviruses associated with blotchy bass syndrome in black basses (Micropterus spp.) Novel adomaviruses associated with blotchy bass syndrome in black basses (Micropterus spp.)
Black bass (Micropterus spp.) are the most important warmwater game fishes in the United States. They have high socioeconomic and recreational value and support an important aquaculture industry. Since 2008, fisheries managers have been reporting the observation of hyperpigmented melanistic lesions (HPMLs) on smallmouth bass (M. dolomieu) in different ecoregions of the United States...
Calibration of the Stream Salmonid Simulator (S3) model to estimate annual survival, movement, and food consumption by juvenile Chinook salmon (Oncorhynchus tshawytscha) in the restoration reach of the Trinity River, California, 2006–18 Calibration of the Stream Salmonid Simulator (S3) model to estimate annual survival, movement, and food consumption by juvenile Chinook salmon (Oncorhynchus tshawytscha) in the restoration reach of the Trinity River, California, 2006–18
Executive SummaryThe Trinity River is managed in two sections: (1) from the upper 64-kilometer “restoration reach” downstream from Lewiston Dam to the confluence with the North Fork Trinity River, and (2) the 120-kilometer lower Trinity River downstream from the restoration reach. The Stream Salmonid Simulator (S3) has been previously applied to these reaches and the Klamath River. To...
Science
The Institutional Animal Care and Use Committee
The Institutional Animal Care and Use Committee (IACUC) is responsible for oversight of the animal care and use program and the components as described in the Public Health Service Policy on Humane Care and Use of Laboratory Animals and the Guide for the Care and Use of Laboratory Animals.
The Institutional Biosafety Committee
The Institutional Biosafety Committee (IBC) advises the Center on the handling of biohazardous materials, and reviews and approves research projects that involve biohazardous materials, including but not limited to recombinant or synthetic nucleic acid molecules.
USGS Research on 6PPD-quinone: Where the Rubber Meets the Road
Stormwater and road runoff are recognized forms of pollution that can contain chemicals harmful to fish and other aquatic animals. This includes 6PPD-quinone, the oxidized form of the chemical compound 6PPD that is used to prevent tires from degrading and cracking, ensuring driver safety. As 6PPD-quinone sheds from tires during normal wear it can enter streams in stormwater runoff.