Recent physical connections may explain weak genetic structure in western Alaskan chum salmon ( Oncorhynchus keta) populations
Abstract 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 di...
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crwiley:10.1002/ece3.628 2024-06-02T08:09:57+00:00 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 http://dx.doi.org/10.1002/ece3.628 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.628 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.628 en eng Wiley http://creativecommons.org/licenses/by/3.0/ Ecology and Evolution volume 3, issue 7, page 2362-2377 ISSN 2045-7758 2045-7758 journal-article 2013 crwiley https://doi.org/10.1002/ece3.628 2024-05-03T10:43:49Z Abstract 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. Article in Journal/Newspaper Kuskokwim Alaska Yukon Wiley Online Library Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Yukon Ecology and Evolution 3 7 2362 2377 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract 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 |
Article in Journal/Newspaper |
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. |
spellingShingle |
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 |
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 |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/ece3.628 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.628 https://onlinelibrary.wiley.com/doi/pdf/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_source |
Ecology and Evolution volume 3, issue 7, page 2362-2377 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1002/ece3.628 |
container_title |
Ecology and Evolution |
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3 |
container_issue |
7 |
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2362 |
op_container_end_page |
2377 |
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1800755751035076608 |