The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Clint C Muhlfeld - One of the best experts on this subject based on the ideXlab platform.
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invasive hybridization in a threatened species is accelerated by climate change
Nature Climate Change, 2014Co-Authors: Clint C Muhlfeld, Ryan P Kovach, Leslie A Jones, Robert Alchokhachy, Matthew C Boyer, Robb F Leary, Winsor H Lowe, Gordon LuikartAbstract:Cross-breeding between invasive and native species (hybridization) is one of the potential ways that climate change can impact biodiversity; unfortunately there is little data on this phenomenon. Now, research shows that rapid climate-warming has exacerbated interactions between native trout (Oncorhynchus clarkii lewisi) and the non-native species (Oncorhynchus mykiss) through invasive hybridization in western North America.
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spatial and temporal spawning dynamics of native westslope cutthroat trout Oncorhynchus clarkii lewisi introduced rainbow trout Oncorhynchus mykiss and their hybrids
Canadian Journal of Fisheries and Aquatic Sciences, 2009Co-Authors: Clint C Muhlfeld, Thomas E Mcmahon, Durae Belcerd Belcer, Jeffrey L KershnerAbstract:We used radiotelemetry to assess spatial and temporal spawning distributions of native westslope cutthroat trout (Oncorhynchus clarkii lewisi; WCT), introduced rainbow trout (Oncorhynchus mykiss; R...
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rainbow trout Oncorhynchus mykiss invasion and the spread of hybridization with native westslope cutthroat trout Oncorhynchus clarkii lewisi
Canadian Journal of Fisheries and Aquatic Sciences, 2008Co-Authors: Matthew C Boyer, Clint C Muhlfeld, Fred W AllendorfAbstract:We analyzed 13 microsatellite loci to estimate gene flow among westslope cutthroat trout, Oncorhynchus clarkii lewisi, populations and determine the invasion pattern of hybrids between native O. c....
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spread of hybridization between native westslope cutthroat trout Oncorhynchus clarki lewisi and nonnative rainbow trout Oncorhynchus mykiss
Canadian Journal of Fisheries and Aquatic Sciences, 2003Co-Authors: Nathaniel P Hitt, Clint C Muhlfeld, Christopher A Frissell, Fred W AllendorfAbstract:We examined spatial and temporal patterns of hybridization between native westslope cutthroat trout, Oncorhynchus clarki lewisi, and nonnative rainbow trout, O. mykiss, in streams of the Flathead River system in Montana, U.S.A. We detected hybridization in 24 of 42 sites sampled from 1998 to 2001. We found new Oncorhynchus mykiss introgression in seven of 11 sample populations that were determined to be nonhybridized in 1984. Patterns of spatial autocorrelation and linkage disequilibrium indicated that hybridization is spreading among sites and is advancing primarily via post-F1 hybrids. Although hybridized populations were distributed widely throughout the study area, the genetic contribution from O. mykiss decreased with increasing upstream distance from the Flathead River mainstem, suggesting that O. mykiss introgression is spreading in an upstream direction. The spread of hybridization may be constrained more by demographic than by environmental factors, given that (i) hybridized populations generally...
Fred W Allendorf - One of the best experts on this subject based on the ideXlab platform.
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rainbow trout Oncorhynchus mykiss invasion and the spread of hybridization with native westslope cutthroat trout Oncorhynchus clarkii lewisi
Canadian Journal of Fisheries and Aquatic Sciences, 2008Co-Authors: Matthew C Boyer, Clint C Muhlfeld, Fred W AllendorfAbstract:We analyzed 13 microsatellite loci to estimate gene flow among westslope cutthroat trout, Oncorhynchus clarkii lewisi, populations and determine the invasion pattern of hybrids between native O. c....
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spread of hybridization between native westslope cutthroat trout Oncorhynchus clarki lewisi and nonnative rainbow trout Oncorhynchus mykiss
Canadian Journal of Fisheries and Aquatic Sciences, 2003Co-Authors: Nathaniel P Hitt, Clint C Muhlfeld, Christopher A Frissell, Fred W AllendorfAbstract:We examined spatial and temporal patterns of hybridization between native westslope cutthroat trout, Oncorhynchus clarki lewisi, and nonnative rainbow trout, O. mykiss, in streams of the Flathead River system in Montana, U.S.A. We detected hybridization in 24 of 42 sites sampled from 1998 to 2001. We found new Oncorhynchus mykiss introgression in seven of 11 sample populations that were determined to be nonhybridized in 1984. Patterns of spatial autocorrelation and linkage disequilibrium indicated that hybridization is spreading among sites and is advancing primarily via post-F1 hybrids. Although hybridized populations were distributed widely throughout the study area, the genetic contribution from O. mykiss decreased with increasing upstream distance from the Flathead River mainstem, suggesting that O. mykiss introgression is spreading in an upstream direction. The spread of hybridization may be constrained more by demographic than by environmental factors, given that (i) hybridized populations generally...
Joseph D Kiernan - One of the best experts on this subject based on the ideXlab platform.
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oversummer growth and survival of juvenile coho salmon Oncorhynchus kisutch across a natural gradient of stream water temperature and prey availability an in situ enclosure experiment
Canadian Journal of Fisheries and Aquatic Sciences, 2020Co-Authors: Robert A Lusardi, Bruce G Hammock, Carson Jeffres, Randy A Dahlgren, Joseph D KiernanAbstract:Conservation efforts for Pacific salmon (Oncorhynchus spp.) increasingly prioritize maintenance of cool water temperatures that protect all freshwater life stages. However, development of appropria...
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the effects of early sandbar formation on the abundance and ecology of coho salmon Oncorhynchus kisutch and steelhead trout Oncorhynchus mykiss in a central california coastal lagoon
Canadian Journal of Fisheries and Aquatic Sciences, 2018Co-Authors: Joseph D Kiernan, Annmarie K Osterback, Cynthia H Kern, Emerson A Kanawi, Jeffrey M PerezAbstract:We investigated how extreme drought conditions influenced the abundance, growth, movement, and seawater readiness of juvenile coho salmon (Oncorhynchus kisutch) and steelhead trout (Oncorhynchus mykiss) in a small central California coastal lagoon. In 2015, the seasonal sandbar at the mouth of Scott Creek formed over 2 months earlier than average, effectively trapping fish in the lagoon for 7 additional months (mid-May through December) before outmigration opportunities eventually resumed. Monthly mark–recapture sampling demonstrated that juvenile coho salmon and steelhead were able to persist in the lagoon during extended periods of high water temperature and low dissolved oxygen concentration. Both salmonid species exhibited similar temporal trends in abundance, growth, and Na+-K+-ATPase activity levels during lagoon residence; however, abundance and growth rates were consistently higher for steelhead. Stationary passive integrated transponder tag antenna detections revealed recurrent movement of indivi...
Daniel D Heath - One of the best experts on this subject based on the ideXlab platform.
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ecological consequences of hybridization between native westslope cutthroat Oncorhynchus clarkii lewisi and introduced rainbow Oncorhynchus mykiss trout effects on life history and habitat use
Canadian Journal of Fisheries and Aquatic Sciences, 2010Co-Authors: Joseph Rasmussenj B B Rasmussen, Michael Robinsonm D D Robinson, Daniel D HeathAbstract:In the Upper Oldman River, Alberta, Canada, hybridization between introduced rainbow trout (RT; Oncorhynchus mykiss) and native westslope cutthroat trout (WCT; Oncorhynchus clarkii lewisi) has produced a genotypic gradient with rainbow trout alleles undetectable (<1%) at high elevations and increasing in abundance downstream. Few F1 hybrids were found, and genotype frequencies suggest strong backcrossing of hybrids to pure parental populations at both ends of the gradient. The increasing prevalence of RT alleles downstream is accompanied by a life history gradient such that RT alleles were positively associated with growth rate and negatively associated with survivorship. Although physical barriers extended the distribution of pure WCT downstream, several streams held genetically pure WCT in their uppermost reaches, even when no barriers were present. For example, RT alleles were undetectable in headwaters of Dutch Creek, which had no barriers but was very cold (average summer temperature <7.3 °C). We pro...
Matthew C Boyer - One of the best experts on this subject based on the ideXlab platform.
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invasive hybridization in a threatened species is accelerated by climate change
Nature Climate Change, 2014Co-Authors: Clint C Muhlfeld, Ryan P Kovach, Leslie A Jones, Robert Alchokhachy, Matthew C Boyer, Robb F Leary, Winsor H Lowe, Gordon LuikartAbstract:Cross-breeding between invasive and native species (hybridization) is one of the potential ways that climate change can impact biodiversity; unfortunately there is little data on this phenomenon. Now, research shows that rapid climate-warming has exacerbated interactions between native trout (Oncorhynchus clarkii lewisi) and the non-native species (Oncorhynchus mykiss) through invasive hybridization in western North America.
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rainbow trout Oncorhynchus mykiss invasion and the spread of hybridization with native westslope cutthroat trout Oncorhynchus clarkii lewisi
Canadian Journal of Fisheries and Aquatic Sciences, 2008Co-Authors: Matthew C Boyer, Clint C Muhlfeld, Fred W AllendorfAbstract:We analyzed 13 microsatellite loci to estimate gene flow among westslope cutthroat trout, Oncorhynchus clarkii lewisi, populations and determine the invasion pattern of hybrids between native O. c....
