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Carl Ostberg, Ph.D.

Carl is a Research Fish Biologist at the Western Fisheries Research Center.

Research Interests:

Carl’s research interests focus on evolutionary and conservation genetics.  Current research projects include several studies directed at generating a greater understanding of intrinsic and extrinsic factors associated with hybridization between rainbow and cutthroat trout, using next generation sequencing to develop species-specific markers that differentiate endangered suckers endemic to the Klamath Lake basin, developing eDNA tool to evaluate recolonization extent of native and non-native fishes in the Elwha River following dam removal, and investigating morphological and genetic diversity of Dolly Varden in the Russian Far East.

Professional Experience

  • 2008 to Present - Research Fish Biologist, U.S. Geological Survey, Western Fisheries Research Center, Seattle, WA

  • 2004-2008 - Fishery Biologist, U.S. Geological Survey, Western Fisheries Research Center, Seattle, WA

  • 1997-2004 - Laboratory Technician, U.S. Geological Survey, Western Fisheries Research Center, Seattle, WA

  • 1995-1997 - Graduate Teaching Assistant, Department of Zoology, Washington State University, Pullman, WA

Education and Certifications

  • Ph.D. 2014. University of Washington, School of Aquatic and Fishery Sciences, Seattle, WA

  • M.S. 1997. Washington State University, Zoology, Pullman, WA

  • B.S. 1989. Washington State University, Biology, Pullman, WA

Affiliations and Memberships*

  • American Fisheries Society, Genetics section

Science and Products

european green crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Development and Refinement of Methods for Early Detection of European Green Crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
Learn More
Lahontan Cutthroat Trout

Cutthroat Trout (Oncorhynchus clarkii)

Species Studied - Cutthroat trout ( Oncorhynchus clarkii)
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center
Cutthroat Trout (Oncorhynchus clarkii)

Cutthroat Trout (Oncorhynchus clarkii)

Species Studied - Cutthroat trout ( Oncorhynchus clarkii)
Learn More
Anadromous Bull trout (Salvelinus confluentus)

Bull Trout (Salvelinus confluentus)

Species Studied - Bull Trout ( Salvelinus confluentus)
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center
Bull Trout (Salvelinus confluentus)

Bull Trout (Salvelinus confluentus)

Species Studied - Bull Trout ( Salvelinus confluentus)
Learn More
Filter Total Items: 13

qPCR data for northern pike eDNA surveys in Lake Roosevelt, Washington, 2022 qPCR data for northern pike eDNA surveys in Lake Roosevelt, Washington, 2022

The data support a study that surveyed the spatial and seasonal variability of northern pike (Esox lucius) environmental DNA (eDNA) between river kilometer 1103 and 1158 in Lake Roosevelt, Washington, USA. The metadata represent qPCR quantification cycle (Cq) values for a northern pike assay performed on water samples collected at the same locations in June and September 2022, water...
By
Western Fisheries Research Center

Data used to assess differences in shedding of environmental DNA between living fish and carcasses Data used to assess differences in shedding of environmental DNA between living fish and carcasses

These data were generated from a five-day laboratory study that compared environmental DNA (eDNA) concentrations derived from live and dead rainbow trout (Oncorhychus mykiss) to investigate how eDNA shedding differs between live and dead fish. Live and dead fish were each housed in separate tanks and eDNA samples were collected from each tank after 1, 2, 3, and 5 days. Additionally...
By
Western Fisheries Research Center

Environmental DNA survey results for Oncorhynchus mykiss and Cottus aleuticus in coastal streams of Big Sur, California, 2021-2022 Environmental DNA survey results for Oncorhynchus mykiss and Cottus aleuticus in coastal streams of Big Sur, California, 2021-2022

The data support a study that surveyed the spatial distribution of Oncorhynchus mykiss and Cottus aleuticus eDNA in coastal streams of Big Sur, California, 2021-2022 following post-fire debris flows. The metadata represent qPCR quantification cycle (Cq) values for O. mykiss and C. aleuticus assays performed on water samples collected during June and July of 2021 and 2022 from the...
By
Western Fisheries Research Center

Upper Skagit Reservoir Food Web Data, 2005-2021 Upper Skagit Reservoir Food Web Data, 2005-2021

This release includes data used to evaluate the structure and function of the Ross Lake and Diablo Lake food webs. This includes data on zooplankton density and production (zooplankton_density.csv and daphnia_region_production_biomass.csv), lake volume estimates used to expand zooplankton density and production data (lake_volume_estimates.csv), fish sampling (FishSampleEvents.csv), fish...
By
Western Fisheries Research Center

Data relating to the development of a quantitative PCR assay for detecting Northwest salamander (Ambystoma gracile) in environmental DNA samples Data relating to the development of a quantitative PCR assay for detecting Northwest salamander (Ambystoma gracile) in environmental DNA samples

The data support a study that describes the development and validation of a primer and probe based quantitative PCR (qPCR) assay for use with environmental DNA to detect Northwest salamander (Ambystoma gracile), a species endemic to the temperate Pacific coastal region of North America. The metadata includes qPCR quantification cycle (Cq) values from testing the A. gracile assay on DNA...
By
Western Fisheries Research Center

Spatial and temporal surveys of salmon eDNA in Seattle urban creeks, Washington, 2018 - 2020 Spatial and temporal surveys of salmon eDNA in Seattle urban creeks, Washington, 2018 - 2020

The data support a study that surveyed the spatial and temporal distribution of salmon eDNA in Seattle urban creeks, Washington, 2018 - 2020. The metadata represent qPCR quantification cycle (Cq) values for Chinook salmon, coho salmon, and coastal cutthroat trout assays performed on water samples collected on specific days at specific sites on Thornton Creek, Taylor Creek, and Mapes...
By
Western Fisheries Research Center

Information tables associated with a risk assessment for bull trout introduction into Sullivan Lake, northeastern, Washington including population donor sources and resident species Information tables associated with a risk assessment for bull trout introduction into Sullivan Lake, northeastern, Washington including population donor sources and resident species

Introduction and translocation programs require thoughtful planning to increase the likelihood of success and to understand the benefits, risks, and constraints of such programs. A risk assessment was completed for bull trout introduction into the Sullivan Lake and Harvey Creek watershed, northeastern Washington. The risk assessment was designed to evaluate potential risks to resident...
By
Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL), Fish Health Program (FHP)

Spatial and temporal survey of waterborne myxozoan parasites in the Lake Sammamish watershed, Washington, from 2019 - 2021 Spatial and temporal survey of waterborne myxozoan parasites in the Lake Sammamish watershed, Washington, from 2019 - 2021

There is a fundamental knowledge gap on the distribution, prevalence, intensity, and ecology of salmonid myxozoan parasites in the Lake Sammamish watershed, Washington. To address this knowledge gap, we tested water samples for Ceratonova shasta, Parvicapsula minibicornis and Tetracapsuloides bryosalmonae DNA from 84 sites distributed throughout the Lake Sammamish watershed in fall 2019...
By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Fish Health Program (FHP)

The ontogeny of eDNA shedding during early development in Chinook Salmon The ontogeny of eDNA shedding during early development in Chinook Salmon

We conducted a lab study to explore eDNA shedding during early life history (from fertilized eggs until near yolk sac absorption) in Chinook Salmon at three biomasses: 10 eggs, 100 eggs, and 1,000 eggs, and each egg biomass was replicated (indicated as replicates 1 and 2). Water samples were collected at several time points before, during, and after hatch for detection of Chinook Salmon...
By
Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center

Environmental DNA (eDNA) is an Effective Tool to Track Recolonizing Migratory Fish Following Large-Scale Dam Removal, field data Environmental DNA (eDNA) is an Effective Tool to Track Recolonizing Migratory Fish Following Large-Scale Dam Removal, field data

We collected environmental DNA (eDNA) data from the Elwha River, home to the world?s largest dam removal project, to track the spatial and temporal patterns of species responses following dam removal. In total, we collected data for 11 different fish taxa, sampled at 25 sites ranging across 56 river kilometers in a wilderness river for 4 years following dam removal. We show that eDNA can
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center

Detection of invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes using eDNA, field and mesocosm data Detection of invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes using eDNA, field and mesocosm data

We conducted a study to test the factors related to detectability of two invasive aquatic plants (Egeria densa and Myriophyllym spicatum) using environmental DNA (eDNA), over extended periods of time, and specifically examined how plant growth stage and abundance relates to eDNA detection in semi-natural and natural conditions. This dataset is from sampling performed in summer of 2018 in...
By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center

2015 environmental DNA surveys for lampreys in Chehalis River tributaries, Washington 2015 environmental DNA surveys for lampreys in Chehalis River tributaries, Washington

Columns of data representing Chehalis River tributary, sample reach locations, dates of water sampling, quantitative PCR results, and whether lamprey were sampled by electrofishing in each sample reach. ***Please note that the title of this data release used to be "Environmental DNA surveys for lampreys in Chehalis River tributaries, Washington, from 2015 and 2017," but was updated for...
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center
Scientists Carl and Jeff sitting on a fallen tree in Skagit, WA
USGS Fisheries Scientists in Skagit County, WA
USGS Fisheries Scientists in Skagit County, WA
Scientists Carl and Jeff sitting on a fallen tree in Skagit, WA

USGS Fisheries Scientists in Skagit County, WA

USGS Fisheries Scientists in Skagit County, WA

These are two USGS Western Fisheries Research Center scientists, Carl Ostberg and Jeff Duda (from left to right), sitting on a fallen tree in Skagit, WA. These scientists study critical fish, like salmon, in the Ross Dam reservoir and tributaries.

By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Energy Resources Program, Western Fisheries Research Center
Scientists Carl and Jeff sitting on a fallen tree in Skagit, WA

USGS Fisheries Scientists in Skagit County, WA

USGS Fisheries Scientists in Skagit County, WA

These are two USGS Western Fisheries Research Center scientists, Carl Ostberg and Jeff Duda (from left to right), sitting on a fallen tree in Skagit, WA. These scientists study critical fish, like salmon, in the Ross Dam reservoir and tributaries.

By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Energy Resources Program, Western Fisheries Research Center
Sampling for European green crab eDNA
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA
Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington
Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Filter Total Items: 39

Using environmental DNA to assess the response of steelhead/Rainbow Trout and Coastrange Sculpin populations to postfire debris flows in coastal streams of Big Sur, California Using environmental DNA to assess the response of steelhead/Rainbow Trout and Coastrange Sculpin populations to postfire debris flows in coastal streams of Big Sur, California

Objective Debris flows are among the most extreme disturbances to streams and are predicted to become more frequent under climate change. We assessed the response of steelhead Oncorhynchus mykiss (anadromous Rainbow Trout)/Rainbow Trout (hereafter, collectively referred to as O. mykiss) and Coastrange Sculpin Cottus aleuticus populations to major postfire debris flows in two small...
Authors
David Rundio, Brian Spence, Dorothy Chase, Carl Ostberg
By
Ecosystems Mission Area, Western Fisheries Research Center

Spatial and temporal surveys of salmon environmental DNA (eDNA) in a Seattle urban creek Spatial and temporal surveys of salmon environmental DNA (eDNA) in a Seattle urban creek

Seattle Public Utilities (SPU) has a history of conducting traditional fish surveys in urban streams of Seattle, Washington. Limited staff resources have reduced SPU's capacity to monitor fish, and environmental DNA (eDNA) was recognized as an alternative survey method that could potentially improve the efficiency and capacity of SPU-sponsored fish surveys. We performed spatiotemporal...
Authors
Carl Ostberg, Chapin Pier, Dorothy Chase, Russell Perry
By
Ecosystems Mission Area, Western Fisheries Research Center

Shift in piscivory by salmonids following invasion of a minnow in an oligotrophic reservoir Shift in piscivory by salmonids following invasion of a minnow in an oligotrophic reservoir

Predation can play an important role in structuring ecological communities, and predator–prey dynamics can be altered following the introduction of new species. An unauthorized introduction of redside shiner (Richardsonius balteatus) into reservoirs in the Upper Skagit River, Washington, USA created concern that a consequent shift in predator–prey dynamics in the reservoirs could reduce
Authors
Rachelle Johnson, Marshal Hoy, Karl Stenberg, Jonathan Mclean, Benjamin Jensen, Tessa Code, Carl Ostberg, David Beauchamp
By
Ecosystems Mission Area, Western Fisheries Research Center

Growth performance of Rainbow Trout in reservoir tributaries and implications for steelhead growth potential above Skagit River dams Growth performance of Rainbow Trout in reservoir tributaries and implications for steelhead growth potential above Skagit River dams

Objective In the Pacific Northwest (USA), Pacific salmon Oncorhynchus spp. populations have been declining significantly for decades, prompting stakeholders to respond with a variety of conservation and restoration measures. One such measure being considered in the Skagit River basin (Washington, USA) is the introduction of steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) above...
Authors
Benjamin Jensen, Rachelle Johnson, Jeffrey Duda, Carl Ostberg, Tessa Code, Jonathan Mclean, Karl Stenberg, Kimberly Larsen, Marshal Hoy, David Beauchamp
By
Ecosystems Mission Area, Western Fisheries Research Center

Development of a quantitative PCR assay for detecting northwest salamander (ambystoma gracile) in environmental DNA samples Development of a quantitative PCR assay for detecting northwest salamander (ambystoma gracile) in environmental DNA samples

We developed a primer and probe based quantitative PCR assay for use with environmental DNA to detect Northwest salamander (Ambystoma gracile), a species endemic to the temperate Pacific coastal region of North America. The assay targets a region in the mitochondrial DNA (mtDNA) D-loop gene. Tests of the assay were performed in silico (using the NCBI BLAST tool), in vitro (using DNA...
Authors
Marshal Hoy, Carl Ostberg
By
Ecosystems Mission Area, Western Fisheries Research Center

Risk assessment for bull trout introduction into Sullivan Lake and Harvey Creek, northeastern Washington Risk assessment for bull trout introduction into Sullivan Lake and Harvey Creek, northeastern Washington

The Kalispel Tribe of Indians (KT), U. S. Fish and Wildlife Service, and Washington Department of Fish and Wildlife are engaged in conservation of bull trout (Salvelinus confluentus) in the Lake Pend Oreille (LPO) Core Area. The LPO is a complex habitat core area which falls within three states (Montana, Idaho, and Washington) and a tribal entity. As part of the conservation process, KT...
Authors
Jill Hardiman, Rachel Breyta, Carl Ostberg
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL), Fish Health Program (FHP)

Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2019 Monitoring Report Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2019 Monitoring Report

Populations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter, Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only due to adult mortality, which is relatively low, but also because they are...
Authors
Ryan Bart, Caylen Kelsey, Summer Burdick, Marshal Hoy, Carl Ostberg
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Ontogeny of eDNA shedding during early development in Chinook Salmon (Oncorhynchus tshawytscha) Ontogeny of eDNA shedding during early development in Chinook Salmon (Oncorhynchus tshawytscha)

Knowledge of the timing of major life history events in aquatic species is important for informing conservation and resource management planning. Accordingly, surveys of environmental DNA (eDNA) have been performed to determine the efficacy of eDNA for providing information on life history events, primarily focusing on the timing of events associated with spawning, and these studies have...
Authors
Carl Ostberg, Dorothy Chase
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center

Survival and growth of suckers in mesocosms at three locations within Upper Klamath Lake, Oregon, 2018 Survival and growth of suckers in mesocosms at three locations within Upper Klamath Lake, Oregon, 2018

Executive Summary Due to high mortality in the first year or two of life, Lost River (Deltistes luxatus sp.) and Shortnose suckers (Chasmistes brevirostris sp.) in Upper Klamath Lake, Oregon rarely reach maturity. In 2015, the U.S. Fish and Wildlife Service began the Sucker Assisted Rearing Program (SARP) to improve early life survival before releasing the fish back into Upper Klamath...
Authors
Summer Burdick, Carla Conway, Carl Ostberg, Ryan Bart, Diane Elliott
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Environmental DNA is an effective tool to track recolonizing migratory fish following large‐scale dam removal Environmental DNA is an effective tool to track recolonizing migratory fish following large‐scale dam removal

Environmental DNA (eDNA) has emerged as a potentially powerful tool for use in conservation and resource management, including for tracking the recolonization dynamics of fish populations. We used eDNA to assess the effectiveness of dam removal to restore fish passage on the Elwha River in Washington State (USA). Using a suite of 11 species‐specific eDNA polymerase chain reaction (PCR)...
Authors
Jeffrey Duda, Marshal Hoy, Dorothy Chase, George Pess, Samuel Brenkman, Michael McHenry, Carl Ostberg
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center

Use of environmental DNA to detect the invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes Use of environmental DNA to detect the invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes

Environmental DNA (eDNA) analysis offers a promising tool for rapid and early detection of aquatic plant invasive species, but currently suffers from substantial unknowns that limit its widespread use in monitoring programs. We conducted the first study to test the factors related to eDNA-based detectability of 2 invasive aquatic plants, Egeria densa and Myriophyllum spicatum, over...
Authors
Lauren Kuehne, Carl Ostberg, Dorothy Chase, Jeffrey Duda, Julian D. Olden
By
Ecosystems Mission Area, Western Fisheries Research Center

Juvenile Lost River and shortnose sucker year-class formation, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2018 monitoring report Juvenile Lost River and shortnose sucker year-class formation, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2018 monitoring report

Executive Summary Populations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only because of adult mortality, which is relatively low, but...
Authors
Ryan Bart, Summer Burdick, Marshal Hoy, Carl Ostberg
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Non-USGS Publications**

Ristow, S.S., L.D. Grabowski, C.O. Ostberg, B. Robison, and G.H. Thorgaard. 1998. Development of long-term cell lines from homozygous clones of rainbow trout. Journal of Aquatic Animal Health 10(1): 75-82. DOI: 10.1577/1548-8667(1998)010<0075:DOLTCL>2.0.CO;2.
Peek, A.S., P.A. Wheeler, C.O. Ostberg, and G.H. Thorgaard. 1997. A minichromosome carrying a pigmentation gene and brook trout DNA sequences in transgenic rainbow trout. Genome 40(5): 594-599. DOI: 10.1139/g97-778.

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

Western Fisheries Science News, April 2018 | Issue 6.4

Western Fisheries Science News, April 2018 | Issue 6.4

Using Environmental DNA (eDNA) to Detect Lamprey

Read Article
Western Fisheries Science News, April 2014 | Issue 2.4

Western Fisheries Science News, April 2014 | Issue 2.4

Genetic Tools Help Managers Do More With Less

Read Article

Science and Products

european green crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Development and Refinement of Methods for Early Detection of European Green Crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
Learn More
Lahontan Cutthroat Trout

Cutthroat Trout (Oncorhynchus clarkii)

Species Studied - Cutthroat trout ( Oncorhynchus clarkii)
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center
Cutthroat Trout (Oncorhynchus clarkii)

Cutthroat Trout (Oncorhynchus clarkii)

Species Studied - Cutthroat trout ( Oncorhynchus clarkii)
Learn More
Anadromous Bull trout (Salvelinus confluentus)

Bull Trout (Salvelinus confluentus)

Species Studied - Bull Trout ( Salvelinus confluentus)
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center
Bull Trout (Salvelinus confluentus)

Bull Trout (Salvelinus confluentus)

Species Studied - Bull Trout ( Salvelinus confluentus)
Learn More
Filter Total Items: 13

qPCR data for northern pike eDNA surveys in Lake Roosevelt, Washington, 2022 qPCR data for northern pike eDNA surveys in Lake Roosevelt, Washington, 2022

The data support a study that surveyed the spatial and seasonal variability of northern pike (Esox lucius) environmental DNA (eDNA) between river kilometer 1103 and 1158 in Lake Roosevelt, Washington, USA. The metadata represent qPCR quantification cycle (Cq) values for a northern pike assay performed on water samples collected at the same locations in June and September 2022, water...
By
Western Fisheries Research Center

Data used to assess differences in shedding of environmental DNA between living fish and carcasses Data used to assess differences in shedding of environmental DNA between living fish and carcasses

These data were generated from a five-day laboratory study that compared environmental DNA (eDNA) concentrations derived from live and dead rainbow trout (Oncorhychus mykiss) to investigate how eDNA shedding differs between live and dead fish. Live and dead fish were each housed in separate tanks and eDNA samples were collected from each tank after 1, 2, 3, and 5 days. Additionally...
By
Western Fisheries Research Center

Environmental DNA survey results for Oncorhynchus mykiss and Cottus aleuticus in coastal streams of Big Sur, California, 2021-2022 Environmental DNA survey results for Oncorhynchus mykiss and Cottus aleuticus in coastal streams of Big Sur, California, 2021-2022

The data support a study that surveyed the spatial distribution of Oncorhynchus mykiss and Cottus aleuticus eDNA in coastal streams of Big Sur, California, 2021-2022 following post-fire debris flows. The metadata represent qPCR quantification cycle (Cq) values for O. mykiss and C. aleuticus assays performed on water samples collected during June and July of 2021 and 2022 from the...
By
Western Fisheries Research Center

Upper Skagit Reservoir Food Web Data, 2005-2021 Upper Skagit Reservoir Food Web Data, 2005-2021

This release includes data used to evaluate the structure and function of the Ross Lake and Diablo Lake food webs. This includes data on zooplankton density and production (zooplankton_density.csv and daphnia_region_production_biomass.csv), lake volume estimates used to expand zooplankton density and production data (lake_volume_estimates.csv), fish sampling (FishSampleEvents.csv), fish...
By
Western Fisheries Research Center

Data relating to the development of a quantitative PCR assay for detecting Northwest salamander (Ambystoma gracile) in environmental DNA samples Data relating to the development of a quantitative PCR assay for detecting Northwest salamander (Ambystoma gracile) in environmental DNA samples

The data support a study that describes the development and validation of a primer and probe based quantitative PCR (qPCR) assay for use with environmental DNA to detect Northwest salamander (Ambystoma gracile), a species endemic to the temperate Pacific coastal region of North America. The metadata includes qPCR quantification cycle (Cq) values from testing the A. gracile assay on DNA...
By
Western Fisheries Research Center

Spatial and temporal surveys of salmon eDNA in Seattle urban creeks, Washington, 2018 - 2020 Spatial and temporal surveys of salmon eDNA in Seattle urban creeks, Washington, 2018 - 2020

The data support a study that surveyed the spatial and temporal distribution of salmon eDNA in Seattle urban creeks, Washington, 2018 - 2020. The metadata represent qPCR quantification cycle (Cq) values for Chinook salmon, coho salmon, and coastal cutthroat trout assays performed on water samples collected on specific days at specific sites on Thornton Creek, Taylor Creek, and Mapes...
By
Western Fisheries Research Center

Information tables associated with a risk assessment for bull trout introduction into Sullivan Lake, northeastern, Washington including population donor sources and resident species Information tables associated with a risk assessment for bull trout introduction into Sullivan Lake, northeastern, Washington including population donor sources and resident species

Introduction and translocation programs require thoughtful planning to increase the likelihood of success and to understand the benefits, risks, and constraints of such programs. A risk assessment was completed for bull trout introduction into the Sullivan Lake and Harvey Creek watershed, northeastern Washington. The risk assessment was designed to evaluate potential risks to resident...
By
Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL), Fish Health Program (FHP)

Spatial and temporal survey of waterborne myxozoan parasites in the Lake Sammamish watershed, Washington, from 2019 - 2021 Spatial and temporal survey of waterborne myxozoan parasites in the Lake Sammamish watershed, Washington, from 2019 - 2021

There is a fundamental knowledge gap on the distribution, prevalence, intensity, and ecology of salmonid myxozoan parasites in the Lake Sammamish watershed, Washington. To address this knowledge gap, we tested water samples for Ceratonova shasta, Parvicapsula minibicornis and Tetracapsuloides bryosalmonae DNA from 84 sites distributed throughout the Lake Sammamish watershed in fall 2019...
By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Fish Health Program (FHP)

The ontogeny of eDNA shedding during early development in Chinook Salmon The ontogeny of eDNA shedding during early development in Chinook Salmon

We conducted a lab study to explore eDNA shedding during early life history (from fertilized eggs until near yolk sac absorption) in Chinook Salmon at three biomasses: 10 eggs, 100 eggs, and 1,000 eggs, and each egg biomass was replicated (indicated as replicates 1 and 2). Water samples were collected at several time points before, during, and after hatch for detection of Chinook Salmon...
By
Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center

Environmental DNA (eDNA) is an Effective Tool to Track Recolonizing Migratory Fish Following Large-Scale Dam Removal, field data Environmental DNA (eDNA) is an Effective Tool to Track Recolonizing Migratory Fish Following Large-Scale Dam Removal, field data

We collected environmental DNA (eDNA) data from the Elwha River, home to the world?s largest dam removal project, to track the spatial and temporal patterns of species responses following dam removal. In total, we collected data for 11 different fish taxa, sampled at 25 sites ranging across 56 river kilometers in a wilderness river for 4 years following dam removal. We show that eDNA can
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Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center

Detection of invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes using eDNA, field and mesocosm data Detection of invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes using eDNA, field and mesocosm data

We conducted a study to test the factors related to detectability of two invasive aquatic plants (Egeria densa and Myriophyllym spicatum) using environmental DNA (eDNA), over extended periods of time, and specifically examined how plant growth stage and abundance relates to eDNA detection in semi-natural and natural conditions. This dataset is from sampling performed in summer of 2018 in...
By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center

2015 environmental DNA surveys for lampreys in Chehalis River tributaries, Washington 2015 environmental DNA surveys for lampreys in Chehalis River tributaries, Washington

Columns of data representing Chehalis River tributary, sample reach locations, dates of water sampling, quantitative PCR results, and whether lamprey were sampled by electrofishing in each sample reach. ***Please note that the title of this data release used to be "Environmental DNA surveys for lampreys in Chehalis River tributaries, Washington, from 2015 and 2017," but was updated for...
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center
Scientists Carl and Jeff sitting on a fallen tree in Skagit, WA
USGS Fisheries Scientists in Skagit County, WA
USGS Fisheries Scientists in Skagit County, WA
Scientists Carl and Jeff sitting on a fallen tree in Skagit, WA

USGS Fisheries Scientists in Skagit County, WA

USGS Fisheries Scientists in Skagit County, WA

These are two USGS Western Fisheries Research Center scientists, Carl Ostberg and Jeff Duda (from left to right), sitting on a fallen tree in Skagit, WA. These scientists study critical fish, like salmon, in the Ross Dam reservoir and tributaries.

By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Energy Resources Program, Western Fisheries Research Center
Scientists Carl and Jeff sitting on a fallen tree in Skagit, WA

USGS Fisheries Scientists in Skagit County, WA

USGS Fisheries Scientists in Skagit County, WA

These are two USGS Western Fisheries Research Center scientists, Carl Ostberg and Jeff Duda (from left to right), sitting on a fallen tree in Skagit, WA. These scientists study critical fish, like salmon, in the Ross Dam reservoir and tributaries.

By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Energy Resources Program, Western Fisheries Research Center
Sampling for European green crab eDNA
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in Pauls Slough in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA
Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington
Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Sampling for European green crab eDNA

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington

Sampling for European green crab environmental DNA (eDNA) in a tide channel at Tokeland in Willapa Bay, Washington, as part of a study that aims to increase the capacity for early detection monitoring and biosurveillance of invasive green crab.

By
Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Filter Total Items: 39

Using environmental DNA to assess the response of steelhead/Rainbow Trout and Coastrange Sculpin populations to postfire debris flows in coastal streams of Big Sur, California Using environmental DNA to assess the response of steelhead/Rainbow Trout and Coastrange Sculpin populations to postfire debris flows in coastal streams of Big Sur, California

Objective Debris flows are among the most extreme disturbances to streams and are predicted to become more frequent under climate change. We assessed the response of steelhead Oncorhynchus mykiss (anadromous Rainbow Trout)/Rainbow Trout (hereafter, collectively referred to as O. mykiss) and Coastrange Sculpin Cottus aleuticus populations to major postfire debris flows in two small...
Authors
David Rundio, Brian Spence, Dorothy Chase, Carl Ostberg
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Ecosystems Mission Area, Western Fisheries Research Center

Spatial and temporal surveys of salmon environmental DNA (eDNA) in a Seattle urban creek Spatial and temporal surveys of salmon environmental DNA (eDNA) in a Seattle urban creek

Seattle Public Utilities (SPU) has a history of conducting traditional fish surveys in urban streams of Seattle, Washington. Limited staff resources have reduced SPU's capacity to monitor fish, and environmental DNA (eDNA) was recognized as an alternative survey method that could potentially improve the efficiency and capacity of SPU-sponsored fish surveys. We performed spatiotemporal...
Authors
Carl Ostberg, Chapin Pier, Dorothy Chase, Russell Perry
By
Ecosystems Mission Area, Western Fisheries Research Center

Shift in piscivory by salmonids following invasion of a minnow in an oligotrophic reservoir Shift in piscivory by salmonids following invasion of a minnow in an oligotrophic reservoir

Predation can play an important role in structuring ecological communities, and predator–prey dynamics can be altered following the introduction of new species. An unauthorized introduction of redside shiner (Richardsonius balteatus) into reservoirs in the Upper Skagit River, Washington, USA created concern that a consequent shift in predator–prey dynamics in the reservoirs could reduce
Authors
Rachelle Johnson, Marshal Hoy, Karl Stenberg, Jonathan Mclean, Benjamin Jensen, Tessa Code, Carl Ostberg, David Beauchamp
By
Ecosystems Mission Area, Western Fisheries Research Center

Growth performance of Rainbow Trout in reservoir tributaries and implications for steelhead growth potential above Skagit River dams Growth performance of Rainbow Trout in reservoir tributaries and implications for steelhead growth potential above Skagit River dams

Objective In the Pacific Northwest (USA), Pacific salmon Oncorhynchus spp. populations have been declining significantly for decades, prompting stakeholders to respond with a variety of conservation and restoration measures. One such measure being considered in the Skagit River basin (Washington, USA) is the introduction of steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) above...
Authors
Benjamin Jensen, Rachelle Johnson, Jeffrey Duda, Carl Ostberg, Tessa Code, Jonathan Mclean, Karl Stenberg, Kimberly Larsen, Marshal Hoy, David Beauchamp
By
Ecosystems Mission Area, Western Fisheries Research Center

Development of a quantitative PCR assay for detecting northwest salamander (ambystoma gracile) in environmental DNA samples Development of a quantitative PCR assay for detecting northwest salamander (ambystoma gracile) in environmental DNA samples

We developed a primer and probe based quantitative PCR assay for use with environmental DNA to detect Northwest salamander (Ambystoma gracile), a species endemic to the temperate Pacific coastal region of North America. The assay targets a region in the mitochondrial DNA (mtDNA) D-loop gene. Tests of the assay were performed in silico (using the NCBI BLAST tool), in vitro (using DNA...
Authors
Marshal Hoy, Carl Ostberg
By
Ecosystems Mission Area, Western Fisheries Research Center

Risk assessment for bull trout introduction into Sullivan Lake and Harvey Creek, northeastern Washington Risk assessment for bull trout introduction into Sullivan Lake and Harvey Creek, northeastern Washington

The Kalispel Tribe of Indians (KT), U. S. Fish and Wildlife Service, and Washington Department of Fish and Wildlife are engaged in conservation of bull trout (Salvelinus confluentus) in the Lake Pend Oreille (LPO) Core Area. The LPO is a complex habitat core area which falls within three states (Montana, Idaho, and Washington) and a tribal entity. As part of the conservation process, KT...
Authors
Jill Hardiman, Rachel Breyta, Carl Ostberg
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL), Fish Health Program (FHP)

Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2019 Monitoring Report Growth, survival, and cohort formation of juvenile Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2019 Monitoring Report

Populations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter, Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only due to adult mortality, which is relatively low, but also because they are...
Authors
Ryan Bart, Caylen Kelsey, Summer Burdick, Marshal Hoy, Carl Ostberg
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Ontogeny of eDNA shedding during early development in Chinook Salmon (Oncorhynchus tshawytscha) Ontogeny of eDNA shedding during early development in Chinook Salmon (Oncorhynchus tshawytscha)

Knowledge of the timing of major life history events in aquatic species is important for informing conservation and resource management planning. Accordingly, surveys of environmental DNA (eDNA) have been performed to determine the efficacy of eDNA for providing information on life history events, primarily focusing on the timing of events associated with spawning, and these studies have...
Authors
Carl Ostberg, Dorothy Chase
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center

Survival and growth of suckers in mesocosms at three locations within Upper Klamath Lake, Oregon, 2018 Survival and growth of suckers in mesocosms at three locations within Upper Klamath Lake, Oregon, 2018

Executive Summary Due to high mortality in the first year or two of life, Lost River (Deltistes luxatus sp.) and Shortnose suckers (Chasmistes brevirostris sp.) in Upper Klamath Lake, Oregon rarely reach maturity. In 2015, the U.S. Fish and Wildlife Service began the Sucker Assisted Rearing Program (SARP) to improve early life survival before releasing the fish back into Upper Klamath...
Authors
Summer Burdick, Carla Conway, Carl Ostberg, Ryan Bart, Diane Elliott
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Fish Health Program (FHP), Klamath Falls Field Station (KFFS)

Environmental DNA is an effective tool to track recolonizing migratory fish following large‐scale dam removal Environmental DNA is an effective tool to track recolonizing migratory fish following large‐scale dam removal

Environmental DNA (eDNA) has emerged as a potentially powerful tool for use in conservation and resource management, including for tracking the recolonization dynamics of fish populations. We used eDNA to assess the effectiveness of dam removal to restore fish passage on the Elwha River in Washington State (USA). Using a suite of 11 species‐specific eDNA polymerase chain reaction (PCR)...
Authors
Jeffrey Duda, Marshal Hoy, Dorothy Chase, George Pess, Samuel Brenkman, Michael McHenry, Carl Ostberg
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center

Use of environmental DNA to detect the invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes Use of environmental DNA to detect the invasive aquatic plants Myriophyllum spicatum and Egeria densa in lakes

Environmental DNA (eDNA) analysis offers a promising tool for rapid and early detection of aquatic plant invasive species, but currently suffers from substantial unknowns that limit its widespread use in monitoring programs. We conducted the first study to test the factors related to eDNA-based detectability of 2 invasive aquatic plants, Egeria densa and Myriophyllum spicatum, over...
Authors
Lauren Kuehne, Carl Ostberg, Dorothy Chase, Jeffrey Duda, Julian D. Olden
By
Ecosystems Mission Area, Western Fisheries Research Center

Juvenile Lost River and shortnose sucker year-class formation, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2018 monitoring report Juvenile Lost River and shortnose sucker year-class formation, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2018 monitoring report

Executive Summary Populations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter Clear Lake), California, are experiencing long-term decreases in abundance. Upper Klamath Lake populations are decreasing not only because of adult mortality, which is relatively low, but...
Authors
Ryan Bart, Summer Burdick, Marshal Hoy, Carl Ostberg
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Non-USGS Publications**

Ristow, S.S., L.D. Grabowski, C.O. Ostberg, B. Robison, and G.H. Thorgaard. 1998. Development of long-term cell lines from homozygous clones of rainbow trout. Journal of Aquatic Animal Health 10(1): 75-82. DOI: 10.1577/1548-8667(1998)010<0075:DOLTCL>2.0.CO;2.
Peek, A.S., P.A. Wheeler, C.O. Ostberg, and G.H. Thorgaard. 1997. A minichromosome carrying a pigmentation gene and brook trout DNA sequences in transgenic rainbow trout. Genome 40(5): 594-599. DOI: 10.1139/g97-778.

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

Western Fisheries Science News, April 2018 | Issue 6.4

Western Fisheries Science News, April 2018 | Issue 6.4

Using Environmental DNA (eDNA) to Detect Lamprey

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Western Fisheries Science News, April 2014 | Issue 2.4

Western Fisheries Science News, April 2014 | Issue 2.4

Genetic Tools Help Managers Do More With Less

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*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government

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