Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing
Though genetic diversity is necessary for population persistence in rapidly changing environments, little is known about how climate‐warming influences patterns of intra‐population genetic variation. For a pink salmon population experiencing increasing temperatures, we used temporal genetic data (mi...
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ftpubmed:oai:pubmedcentral.nih.gov:5779130 2023-05-15T17:59:40+02:00 Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. 2013-04-18 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779130/ https://doi.org/10.1111/eva.12066 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779130/ http://dx.doi.org/10.1111/eva.12066 © 2013 The Authors. Evolutionary Applications published by Blackwell Publishing Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/3.0/) 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.12066 2018-02-04T01:29:04Z Though genetic diversity is necessary for population persistence in rapidly changing environments, little is known about how climate‐warming influences patterns of intra‐population genetic variation. For a pink salmon population experiencing increasing temperatures, we used temporal genetic data (microsatellite = 1993, 2001, 2009; allozyme = 1979, 1981, 1983) to quantify the genetic effective population size (N e) and genetic divergence due to differences in migration timing and to estimate whether these quantities have changed over time. We predicted that temporal trends toward earlier migration timing and a corresponding loss of phenotypic variation would decrease genetic divergence based on migration timing and N e. We observed significant genetic divergence based on migration timing and genetic heterogeneity between early‐ and late‐migrating fish. There was also some evidence for divergent selection between early‐ and late‐migrating fish at circadian rhythm genes, but results varied over time. Estimates of N e from multiple methods were large (>1200) and N e/N c generally exceeded 0.2. Despite shifts in migration timing and loss of phenotypic variation, there was no evidence for changes in within‐population genetic divergence or N e over the course of this study. These results suggest that in instances of population stability, genetic diversity may be resistant to climate‐induced changes in migration timing. Text Pink salmon PubMed Central (PMC) Evolutionary Applications 6 5 795 807 |
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Original Articles Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
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Original Articles |
description |
Though genetic diversity is necessary for population persistence in rapidly changing environments, little is known about how climate‐warming influences patterns of intra‐population genetic variation. For a pink salmon population experiencing increasing temperatures, we used temporal genetic data (microsatellite = 1993, 2001, 2009; allozyme = 1979, 1981, 1983) to quantify the genetic effective population size (N e) and genetic divergence due to differences in migration timing and to estimate whether these quantities have changed over time. We predicted that temporal trends toward earlier migration timing and a corresponding loss of phenotypic variation would decrease genetic divergence based on migration timing and N e. We observed significant genetic divergence based on migration timing and genetic heterogeneity between early‐ and late‐migrating fish. There was also some evidence for divergent selection between early‐ and late‐migrating fish at circadian rhythm genes, but results varied over time. Estimates of N e from multiple methods were large (>1200) and N e/N c generally exceeded 0.2. Despite shifts in migration timing and loss of phenotypic variation, there was no evidence for changes in within‐population genetic divergence or N e over the course of this study. These results suggest that in instances of population stability, genetic diversity may be resistant to climate‐induced changes in migration timing. |
format |
Text |
author |
Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. |
author_facet |
Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. |
author_sort |
Kovach, Ryan P. |
title |
Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
title_short |
Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
title_full |
Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
title_fullStr |
Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
title_full_unstemmed |
Temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
title_sort |
temporal patterns of genetic variation in a salmon population undergoing rapid change in migration timing |
publisher |
John Wiley and Sons Inc. |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779130/ https://doi.org/10.1111/eva.12066 |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779130/ http://dx.doi.org/10.1111/eva.12066 |
op_rights |
© 2013 The Authors. Evolutionary Applications published by Blackwell Publishing Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/3.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/eva.12066 |
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Evolutionary Applications |
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6 |
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807 |
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