Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow
Neutral genetic markers are routinely used to define distinct units within species that warrant discrete management. Human-induced changes to gene flow however may reduce the power of such an approach. We tested the efficiency of adaptive versus neutral genetic markers in differentiating temporally...
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ftpubmed:oai:pubmedcentral.nih.gov:3901548 2023-05-15T15:32:25+02:00 Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow O'Malley, Kathleen G Jacobson, Dave P Kurth, Ryon Dill, Allen J Banks, Michael A 2013-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3901548 https://doi.org/10.1111/eva.12095 en eng John Wiley & Sons Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3901548 http://dx.doi.org/10.1111/eva.12095 © 2013 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Original Articles Text 2013 ftpubmed https://doi.org/10.1111/eva.12095 2014-02-02T02:02:03Z Neutral genetic markers are routinely used to define distinct units within species that warrant discrete management. Human-induced changes to gene flow however may reduce the power of such an approach. We tested the efficiency of adaptive versus neutral genetic markers in differentiating temporally divergent migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid high gene flow owing to artificial propagation and habitat alteration. We compared seven putative migration timing genes to ten microsatellite loci in delineating three migratory groups of Chinook in the Feather River, CA: offspring of fall-run hatchery broodstock that returned as adults to freshwater in fall (fall run), spring-run offspring that returned in spring (spring run), and fall-run offspring that returned in spring (FRS). We found evidence for significant differentiation between the fall and federally listed threatened spring groups based on divergence at three circadian clock genes (OtsClock1b, OmyFbxw11, and Omy1009UW), but not neutral markers. We thus demonstrate the importance of genetic marker choice in resolving complex life history types. These findings directly impact conservation management strategies and add to previous evidence from Pacific and Atlantic salmon indicating that circadian clock genes influence migration timing. Text Atlantic salmon PubMed Central (PMC) Pacific Evolutionary Applications 6 8 1184 1194 |
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Original Articles O'Malley, Kathleen G Jacobson, Dave P Kurth, Ryon Dill, Allen J Banks, Michael A Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow |
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Original Articles |
description |
Neutral genetic markers are routinely used to define distinct units within species that warrant discrete management. Human-induced changes to gene flow however may reduce the power of such an approach. We tested the efficiency of adaptive versus neutral genetic markers in differentiating temporally divergent migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid high gene flow owing to artificial propagation and habitat alteration. We compared seven putative migration timing genes to ten microsatellite loci in delineating three migratory groups of Chinook in the Feather River, CA: offspring of fall-run hatchery broodstock that returned as adults to freshwater in fall (fall run), spring-run offspring that returned in spring (spring run), and fall-run offspring that returned in spring (FRS). We found evidence for significant differentiation between the fall and federally listed threatened spring groups based on divergence at three circadian clock genes (OtsClock1b, OmyFbxw11, and Omy1009UW), but not neutral markers. We thus demonstrate the importance of genetic marker choice in resolving complex life history types. These findings directly impact conservation management strategies and add to previous evidence from Pacific and Atlantic salmon indicating that circadian clock genes influence migration timing. |
format |
Text |
author |
O'Malley, Kathleen G Jacobson, Dave P Kurth, Ryon Dill, Allen J Banks, Michael A |
author_facet |
O'Malley, Kathleen G Jacobson, Dave P Kurth, Ryon Dill, Allen J Banks, Michael A |
author_sort |
O'Malley, Kathleen G |
title |
Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow |
title_short |
Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow |
title_full |
Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow |
title_fullStr |
Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow |
title_full_unstemmed |
Adaptive genetic markers discriminate migratory runs of Chinook salmon (Oncorhynchus tshawytscha) amid continued gene flow |
title_sort |
adaptive genetic markers discriminate migratory runs of chinook salmon (oncorhynchus tshawytscha) amid continued gene flow |
publisher |
John Wiley & Sons Ltd |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3901548 https://doi.org/10.1111/eva.12095 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Atlantic salmon |
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Atlantic salmon |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3901548 http://dx.doi.org/10.1111/eva.12095 |
op_rights |
© 2013 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
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CC-BY |
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https://doi.org/10.1111/eva.12095 |
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Evolutionary Applications |
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8 |
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1194 |
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