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
Filter Total Items: 13
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Filter Total Items: 39
Hybridization between Yellowstone cutthroat trout and rainbow trout alters the expression of muscle growth-related genes and their relationships with growth patterns Hybridization between Yellowstone cutthroat trout and rainbow trout alters the expression of muscle growth-related genes and their relationships with growth patterns
Hybridization creates novel gene combinations that may generate important evolutionary novelty, but may also reduce existing adaptation by interrupting inherent biological processes, such as genotype-environment interactions. Hybridization often causes substantial change in patterns of gene expression, which, in turn, may cause phenotypic change. Rainbow trout (Oncorhynchus mykiss) and...
Authors
Carl O. Ostberg, Dorothy M. Chase, Lorenz Hauser
Development of 20 TaqMan assays differentiating the endangered shortnose and Lost River suckers Development of 20 TaqMan assays differentiating the endangered shortnose and Lost River suckers
Accurate species identification is vital to conservation and management of species at risk. Species identification is challenging when taxa express similar phenotypic characters and form hybrids, for example the endangered shortnose sucker (Chasmistes brevirostris) and Lost River sucker (Deltistes luxatus). Here, we developed 20 Taqman assays that differentiate these species (19 nuclear...
Authors
Marshal S. Hoy, Carl O. Ostberg
Chromosome rearrangements, recombination suppression, and limited segregation distortion in hybrids between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss) Chromosome rearrangements, recombination suppression, and limited segregation distortion in hybrids between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss)
Background Introgressive hybridization is an important evolutionary process that can lead to the creation of novel genome structures and thus potentially new genetic variation for selection to act upon. On the other hand, hybridization with introduced species can threaten native species, such as cutthroat trout (Oncorhynchus clarkii) following the introduction of rainbow trout (O. mykiss...
Authors
Carl O. Ostberg, Lorenz Hauser, Victoria L. Pritchard, John C. Garza, Kerry A. Naish
Spatial segregation of spawning habitat limits hybridization between sympatric native Steelhead and Coastal Cutthroat Trout Spatial segregation of spawning habitat limits hybridization between sympatric native Steelhead and Coastal Cutthroat Trout
Native Coastal Cutthroat Trout Oncorhynchus clarkii clarkii and Coastal Steelhead O. mykiss irideus hybridize naturally in watersheds of the Pacific Northwest yet maintain species integrity. Partial reproductive isolation due to differences in spawning habitat may limit hybridization between these species, but this process is poorly understood. We used a riverscape approach to determine...
Authors
T.W. Buehrens, J. Glasgow, Carl O. Ostberg, T.P. Quinn
Temporal genetic monitoring of hybridization between native westslope cutthroat trout and introduced rainbow trout in the Stehekin River, Washington Temporal genetic monitoring of hybridization between native westslope cutthroat trout and introduced rainbow trout in the Stehekin River, Washington
Introgressive hybridization with introduced rainbow trout (RBT) (Oncorhynchus mykiss) has led to the loss of native cutthroat trout species (O. clarkii) throughout their range, creating conservation concerns. Monitoring temporal hybridization trends provides resource managers with a tool for determining population status and information for establishing conservation goals for native...
Authors
Carl O. Ostberg, Dorothy M. Chase
Dwarf char, a new form of chars (the genus Salvelinus) in Lake Kronotskoe Dwarf char, a new form of chars (the genus Salvelinus) in Lake Kronotskoe
Lake Kronotskoe is situated in the Kronotskii State Nature Reserve and is a unique natural heritage of Kamchatka. The lake–river system of the reserve includes numerous springs and small streams and three large inflowing rivers, Listvennichnaya, Unana, and Uzon, which form the main bays of Lake Kronotskoe; one river (Kronotskaya) flows from the lake. This river is characterized by...
Authors
S.D. Pavlov, E.A. Pivovarov, Carl O. Ostberg
Growth, morphology, and developmental instability of rainbow trout, Yellowstone cutthroat trout, and four hybrid generations Growth, morphology, and developmental instability of rainbow trout, Yellowstone cutthroat trout, and four hybrid generations
Hybridization of cutthroat trout Oncorhynchus clarkii with nonindigenous rainbow trout O. mykiss contributes to the decline of cutthroat trout subspecies throughout their native range. Introgression by rainbow trout can swamp the gene pools of cutthroat trout populations, especially if there is little selection against hybrids. We used rainbow trout, Yellowstone cutthroat trout O...
Authors
C.O. Ostberg, J.J. Duda, J.H. Graham, S. Zhang, K. P. Haywood, B. Miller, T.L. Lerud
Evolutionary relationships among sympatric life history forms of Dolly Varden inhabiting the landlocked Kronotsky Lake, Kamchatka, and a neighboring anadromous population Evolutionary relationships among sympatric life history forms of Dolly Varden inhabiting the landlocked Kronotsky Lake, Kamchatka, and a neighboring anadromous population
We investigated the evolutionary relationships among five sympatric morphs of Dolly Varden Salvelinus malma (white, Schmidti, longhead, river, and dwarf) inhabiting landlocked Kronotsky Lake on the Kamchatka Peninsula, Russia, and an anadromous population below the barrier waterfall on the outflowing Kronotsky River. Morphological analyses indicated phenotypic differentiation...
Authors
C.O. Ostberg, S.D. Pavlov, L. Hauser
Hybridization and cytonuclear associations among native westslope cutthroat trout, introduced rainbow trout, and their hybrids within the Stehekin River drainage, North Cascades National Park Hybridization and cytonuclear associations among native westslope cutthroat trout, introduced rainbow trout, and their hybrids within the Stehekin River drainage, North Cascades National Park
Historic introductions of nonnative rainbow trout Oncorhynchus mykiss into the native habitats of cutthroat trout O. clarkii have impacted cutthroat trout populations through introgressive hybridization, creating challenges and concerns for cutthroat trout conservation. We examined the effects of rainbow trout introductions on the native westslope cutthroat trout O. c. lewisii within the...
Authors
C.O. Ostberg, R. J. Rodriguez
Bi-parentally inherited species-specific markers identify hybridization between rainbow trout and cutthroat trout subspecies Bi-parentally inherited species-specific markers identify hybridization between rainbow trout and cutthroat trout subspecies
Eight polymerase chain reaction primer sets amplifying bi-parentally inherited species-specific markers were developed that differentiate between rainbow trout (Oncorhynchus mykiss) and various cutthroat trout (O. clarki) subspecies. The primers were tested within known F1 and first generation hybrid backcrosses and were shown to amplify codominantly within hybrids. Heterozygous...
Authors
C.O. Ostberg, R. J. Rodriguez
Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus), coastal cutthroat trout (O. clarki clarki) and interspecific hybrids Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus), coastal cutthroat trout (O. clarki clarki) and interspecific hybrids
Hybridization between sympatric species provides unique opportunities to examine the contrast between mechanisms that promote hybridization and maintain species integrity. We surveyed hybridization between sympatric coastal steelhead (Oncorhynchus mykiss irideus) and coastal cutthroat trout (O. clarki clarki) from two streams in Washington State, Olsen Creek (256 individuals sampled) and...
Authors
C.O. Ostberg, S.L. Slatton, R. J. Rodriguez
Identification of a genetic marker that discriminates ocean-type and stream-type chinook salmon in the Columbia River basin Identification of a genetic marker that discriminates ocean-type and stream-type chinook salmon in the Columbia River basin
A marker based on randomly amplified polymorphic DNA (RAPD), OT-38, was discovered that nonlethally discriminates between stream-type and ocean-type populations of chinook salmon Oncorhynchus tshawytscha in the Columbia River basin, including the threatened fall-run (ocean-type) and spring-run (stream-type) Snake River populations. This marker was developed by amplifying chinook salmon...
Authors
C. Rasmussen, C.O. Ostberg, D.R. Clifton, J.L. Holloway, R. J. Rodriguez
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.
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 39
Hybridization between Yellowstone cutthroat trout and rainbow trout alters the expression of muscle growth-related genes and their relationships with growth patterns Hybridization between Yellowstone cutthroat trout and rainbow trout alters the expression of muscle growth-related genes and their relationships with growth patterns
Hybridization creates novel gene combinations that may generate important evolutionary novelty, but may also reduce existing adaptation by interrupting inherent biological processes, such as genotype-environment interactions. Hybridization often causes substantial change in patterns of gene expression, which, in turn, may cause phenotypic change. Rainbow trout (Oncorhynchus mykiss) and...
Authors
Carl O. Ostberg, Dorothy M. Chase, Lorenz Hauser
Development of 20 TaqMan assays differentiating the endangered shortnose and Lost River suckers Development of 20 TaqMan assays differentiating the endangered shortnose and Lost River suckers
Accurate species identification is vital to conservation and management of species at risk. Species identification is challenging when taxa express similar phenotypic characters and form hybrids, for example the endangered shortnose sucker (Chasmistes brevirostris) and Lost River sucker (Deltistes luxatus). Here, we developed 20 Taqman assays that differentiate these species (19 nuclear...
Authors
Marshal S. Hoy, Carl O. Ostberg
Chromosome rearrangements, recombination suppression, and limited segregation distortion in hybrids between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss) Chromosome rearrangements, recombination suppression, and limited segregation distortion in hybrids between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss)
Background Introgressive hybridization is an important evolutionary process that can lead to the creation of novel genome structures and thus potentially new genetic variation for selection to act upon. On the other hand, hybridization with introduced species can threaten native species, such as cutthroat trout (Oncorhynchus clarkii) following the introduction of rainbow trout (O. mykiss...
Authors
Carl O. Ostberg, Lorenz Hauser, Victoria L. Pritchard, John C. Garza, Kerry A. Naish
Spatial segregation of spawning habitat limits hybridization between sympatric native Steelhead and Coastal Cutthroat Trout Spatial segregation of spawning habitat limits hybridization between sympatric native Steelhead and Coastal Cutthroat Trout
Native Coastal Cutthroat Trout Oncorhynchus clarkii clarkii and Coastal Steelhead O. mykiss irideus hybridize naturally in watersheds of the Pacific Northwest yet maintain species integrity. Partial reproductive isolation due to differences in spawning habitat may limit hybridization between these species, but this process is poorly understood. We used a riverscape approach to determine...
Authors
T.W. Buehrens, J. Glasgow, Carl O. Ostberg, T.P. Quinn
Temporal genetic monitoring of hybridization between native westslope cutthroat trout and introduced rainbow trout in the Stehekin River, Washington Temporal genetic monitoring of hybridization between native westslope cutthroat trout and introduced rainbow trout in the Stehekin River, Washington
Introgressive hybridization with introduced rainbow trout (RBT) (Oncorhynchus mykiss) has led to the loss of native cutthroat trout species (O. clarkii) throughout their range, creating conservation concerns. Monitoring temporal hybridization trends provides resource managers with a tool for determining population status and information for establishing conservation goals for native...
Authors
Carl O. Ostberg, Dorothy M. Chase
Dwarf char, a new form of chars (the genus Salvelinus) in Lake Kronotskoe Dwarf char, a new form of chars (the genus Salvelinus) in Lake Kronotskoe
Lake Kronotskoe is situated in the Kronotskii State Nature Reserve and is a unique natural heritage of Kamchatka. The lake–river system of the reserve includes numerous springs and small streams and three large inflowing rivers, Listvennichnaya, Unana, and Uzon, which form the main bays of Lake Kronotskoe; one river (Kronotskaya) flows from the lake. This river is characterized by...
Authors
S.D. Pavlov, E.A. Pivovarov, Carl O. Ostberg
Growth, morphology, and developmental instability of rainbow trout, Yellowstone cutthroat trout, and four hybrid generations Growth, morphology, and developmental instability of rainbow trout, Yellowstone cutthroat trout, and four hybrid generations
Hybridization of cutthroat trout Oncorhynchus clarkii with nonindigenous rainbow trout O. mykiss contributes to the decline of cutthroat trout subspecies throughout their native range. Introgression by rainbow trout can swamp the gene pools of cutthroat trout populations, especially if there is little selection against hybrids. We used rainbow trout, Yellowstone cutthroat trout O...
Authors
C.O. Ostberg, J.J. Duda, J.H. Graham, S. Zhang, K. P. Haywood, B. Miller, T.L. Lerud
Evolutionary relationships among sympatric life history forms of Dolly Varden inhabiting the landlocked Kronotsky Lake, Kamchatka, and a neighboring anadromous population Evolutionary relationships among sympatric life history forms of Dolly Varden inhabiting the landlocked Kronotsky Lake, Kamchatka, and a neighboring anadromous population
We investigated the evolutionary relationships among five sympatric morphs of Dolly Varden Salvelinus malma (white, Schmidti, longhead, river, and dwarf) inhabiting landlocked Kronotsky Lake on the Kamchatka Peninsula, Russia, and an anadromous population below the barrier waterfall on the outflowing Kronotsky River. Morphological analyses indicated phenotypic differentiation...
Authors
C.O. Ostberg, S.D. Pavlov, L. Hauser
Hybridization and cytonuclear associations among native westslope cutthroat trout, introduced rainbow trout, and their hybrids within the Stehekin River drainage, North Cascades National Park Hybridization and cytonuclear associations among native westslope cutthroat trout, introduced rainbow trout, and their hybrids within the Stehekin River drainage, North Cascades National Park
Historic introductions of nonnative rainbow trout Oncorhynchus mykiss into the native habitats of cutthroat trout O. clarkii have impacted cutthroat trout populations through introgressive hybridization, creating challenges and concerns for cutthroat trout conservation. We examined the effects of rainbow trout introductions on the native westslope cutthroat trout O. c. lewisii within the...
Authors
C.O. Ostberg, R. J. Rodriguez
Bi-parentally inherited species-specific markers identify hybridization between rainbow trout and cutthroat trout subspecies Bi-parentally inherited species-specific markers identify hybridization between rainbow trout and cutthroat trout subspecies
Eight polymerase chain reaction primer sets amplifying bi-parentally inherited species-specific markers were developed that differentiate between rainbow trout (Oncorhynchus mykiss) and various cutthroat trout (O. clarki) subspecies. The primers were tested within known F1 and first generation hybrid backcrosses and were shown to amplify codominantly within hybrids. Heterozygous...
Authors
C.O. Ostberg, R. J. Rodriguez
Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus), coastal cutthroat trout (O. clarki clarki) and interspecific hybrids Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus), coastal cutthroat trout (O. clarki clarki) and interspecific hybrids
Hybridization between sympatric species provides unique opportunities to examine the contrast between mechanisms that promote hybridization and maintain species integrity. We surveyed hybridization between sympatric coastal steelhead (Oncorhynchus mykiss irideus) and coastal cutthroat trout (O. clarki clarki) from two streams in Washington State, Olsen Creek (256 individuals sampled) and...
Authors
C.O. Ostberg, S.L. Slatton, R. J. Rodriguez
Identification of a genetic marker that discriminates ocean-type and stream-type chinook salmon in the Columbia River basin Identification of a genetic marker that discriminates ocean-type and stream-type chinook salmon in the Columbia River basin
A marker based on randomly amplified polymorphic DNA (RAPD), OT-38, was discovered that nonlethally discriminates between stream-type and ocean-type populations of chinook salmon Oncorhynchus tshawytscha in the Columbia River basin, including the threatened fall-run (ocean-type) and spring-run (stream-type) Snake River populations. This marker was developed by amplifying chinook salmon...
Authors
C. Rasmussen, C.O. Ostberg, D.R. Clifton, J.L. Holloway, R. J. Rodriguez
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.
*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