Genetic change for earlier migration timing in a pink salmon population
To predict how climate change will influence populations, it is necessary to understand the mechanisms, particularly microevolution and phenotypic plasticity, that allow populations to persist in novel environmental conditions. Although evidence for climate-induced phenotypic change in populations i...
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crroyalsociety:10.1098/rspb.2012.1158 2024-06-23T07:56:13+00:00 Genetic change for earlier migration timing in a pink salmon population Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. 2012 http://dx.doi.org/10.1098/rspb.2012.1158 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2012.1158 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2012.1158 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 279, issue 1743, page 3870-3878 ISSN 0962-8452 1471-2954 journal-article 2012 crroyalsociety https://doi.org/10.1098/rspb.2012.1158 2024-06-10T04:15:10Z To predict how climate change will influence populations, it is necessary to understand the mechanisms, particularly microevolution and phenotypic plasticity, that allow populations to persist in novel environmental conditions. Although evidence for climate-induced phenotypic change in populations is widespread, evidence documenting that these phenotypic changes are due to microevolution is exceedingly rare. In this study, we use 32 years of genetic data (17 complete generations) to determine whether there has been a genetic change towards earlier migration timing in a population of pink salmon that shows phenotypic change; average migration time occurs nearly two weeks earlier than it did 40 years ago. Experimental genetic data support the hypothesis that there has been directional selection for earlier migration timing, resulting in a substantial decrease in the late-migrating phenotype (from more than 30% to less than 10% of the total abundance). From 1983 to 2011, there was a significant decrease—over threefold—in the frequency of a genetic marker for late-migration timing, but there were minimal changes in allele frequencies at other neutral loci. These results demonstrate that there has been rapid microevolution for earlier migration timing in this population. Circadian rhythm genes, however, did not show any evidence for selective changes from 1993 to 2009. Article in Journal/Newspaper Pink salmon The Royal Society Proceedings of the Royal Society B: Biological Sciences 279 1743 3870 3878 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
To predict how climate change will influence populations, it is necessary to understand the mechanisms, particularly microevolution and phenotypic plasticity, that allow populations to persist in novel environmental conditions. Although evidence for climate-induced phenotypic change in populations is widespread, evidence documenting that these phenotypic changes are due to microevolution is exceedingly rare. In this study, we use 32 years of genetic data (17 complete generations) to determine whether there has been a genetic change towards earlier migration timing in a population of pink salmon that shows phenotypic change; average migration time occurs nearly two weeks earlier than it did 40 years ago. Experimental genetic data support the hypothesis that there has been directional selection for earlier migration timing, resulting in a substantial decrease in the late-migrating phenotype (from more than 30% to less than 10% of the total abundance). From 1983 to 2011, there was a significant decrease—over threefold—in the frequency of a genetic marker for late-migration timing, but there were minimal changes in allele frequencies at other neutral loci. These results demonstrate that there has been rapid microevolution for earlier migration timing in this population. Circadian rhythm genes, however, did not show any evidence for selective changes from 1993 to 2009. |
format |
Article in Journal/Newspaper |
author |
Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. |
spellingShingle |
Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. Genetic change for earlier migration timing in a pink salmon population |
author_facet |
Kovach, Ryan P. Gharrett, Anthony J. Tallmon, David A. |
author_sort |
Kovach, Ryan P. |
title |
Genetic change for earlier migration timing in a pink salmon population |
title_short |
Genetic change for earlier migration timing in a pink salmon population |
title_full |
Genetic change for earlier migration timing in a pink salmon population |
title_fullStr |
Genetic change for earlier migration timing in a pink salmon population |
title_full_unstemmed |
Genetic change for earlier migration timing in a pink salmon population |
title_sort |
genetic change for earlier migration timing in a pink salmon population |
publisher |
The Royal Society |
publishDate |
2012 |
url |
http://dx.doi.org/10.1098/rspb.2012.1158 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2012.1158 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2012.1158 |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 279, issue 1743, page 3870-3878 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2012.1158 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
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279 |
container_issue |
1743 |
container_start_page |
3870 |
op_container_end_page |
3878 |
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1802649180990078976 |