Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations
Low genetic divergence at neutral loci among populations is often the result of high levels of contemporary gene flow. Western Alaskan summer-run chum salmon (Oncorhynchus keta) populations demonstrate weak genetic structure, but invoking contemporary gene flow as the basis for the low divergence is...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728971 http://www.ncbi.nlm.nih.gov/pubmed/23919176 https://doi.org/10.1002/ece3.628 |
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ftpubmed:oai:pubmedcentral.nih.gov:3728971 2023-05-15T17:05:38+02:00 Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations Garvin, Michael R Kondzela, Christine M Martin, Patrick C Finney, Bruce Guyon, Jeffrey Templin, William D DeCovich, Nick Gilk-Baumer, Sara Gharrett, Anthony J 2013-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728971 http://www.ncbi.nlm.nih.gov/pubmed/23919176 https://doi.org/10.1002/ece3.628 en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728971 http://www.ncbi.nlm.nih.gov/pubmed/23919176 http://dx.doi.org/10.1002/ece3.628 © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. CC-BY Original Research Text 2013 ftpubmed https://doi.org/10.1002/ece3.628 2013-09-05T03:14:21Z Low genetic divergence at neutral loci among populations is often the result of high levels of contemporary gene flow. Western Alaskan summer-run chum salmon (Oncorhynchus keta) populations demonstrate weak genetic structure, but invoking contemporary gene flow as the basis for the low divergence is problematic because salmon home to their natal streams and some of the populations are thousands of kilometers apart. We used genotypes from microsatellite and single nucleotide polymorphism loci to investigate alternative explanations for the current genetic structure of chum salmon populations from western Alaska. We also estimated current levels of gene flow among Kuskokwim River populations. Our results suggest that weak genetic structure is best explained by physical connections that occurred after the Holocene Thermal Maximum among the Yukon, Kuskokwim, and Nushagak drainages that allowed gene flow to occur among now distant populations. Text Kuskokwim Alaska Yukon PubMed Central (PMC) Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Yukon Ecology and Evolution 3 7 2362 2377 |
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English |
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Original Research |
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Original Research Garvin, Michael R Kondzela, Christine M Martin, Patrick C Finney, Bruce Guyon, Jeffrey Templin, William D DeCovich, Nick Gilk-Baumer, Sara Gharrett, Anthony J Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations |
topic_facet |
Original Research |
description |
Low genetic divergence at neutral loci among populations is often the result of high levels of contemporary gene flow. Western Alaskan summer-run chum salmon (Oncorhynchus keta) populations demonstrate weak genetic structure, but invoking contemporary gene flow as the basis for the low divergence is problematic because salmon home to their natal streams and some of the populations are thousands of kilometers apart. We used genotypes from microsatellite and single nucleotide polymorphism loci to investigate alternative explanations for the current genetic structure of chum salmon populations from western Alaska. We also estimated current levels of gene flow among Kuskokwim River populations. Our results suggest that weak genetic structure is best explained by physical connections that occurred after the Holocene Thermal Maximum among the Yukon, Kuskokwim, and Nushagak drainages that allowed gene flow to occur among now distant populations. |
format |
Text |
author |
Garvin, Michael R Kondzela, Christine M Martin, Patrick C Finney, Bruce Guyon, Jeffrey Templin, William D DeCovich, Nick Gilk-Baumer, Sara Gharrett, Anthony J |
author_facet |
Garvin, Michael R Kondzela, Christine M Martin, Patrick C Finney, Bruce Guyon, Jeffrey Templin, William D DeCovich, Nick Gilk-Baumer, Sara Gharrett, Anthony J |
author_sort |
Garvin, Michael R |
title |
Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations |
title_short |
Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations |
title_full |
Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations |
title_fullStr |
Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations |
title_full_unstemmed |
Recent physical connections may explain weak genetic structure in western Alaskan chum salmon (Oncorhynchus keta) populations |
title_sort |
recent physical connections may explain weak genetic structure in western alaskan chum salmon (oncorhynchus keta) populations |
publisher |
Blackwell Publishing Ltd |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728971 http://www.ncbi.nlm.nih.gov/pubmed/23919176 https://doi.org/10.1002/ece3.628 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Keta Yukon |
geographic_facet |
Keta Yukon |
genre |
Kuskokwim Alaska Yukon |
genre_facet |
Kuskokwim Alaska Yukon |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728971 http://www.ncbi.nlm.nih.gov/pubmed/23919176 http://dx.doi.org/10.1002/ece3.628 |
op_rights |
© 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.628 |
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Ecology and Evolution |
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3 |
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7 |
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2362 |
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2377 |
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1766060320083673088 |