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Parallel evolution of site‐specific changes in divergent caribou lineages
The parallel evolution of phenotypes or traits within or between species provides important insight into the basic mechanisms of evolution. Genetic and genomic advances have allowed investigations into the genetic underpinnings of parallel evolution and the independent evolution of similar traits in...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6024114/ https://www.ncbi.nlm.nih.gov/pubmed/29988428 http://dx.doi.org/10.1002/ece3.4154 |
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author | Horn, Rebekah L. Marques, Adam J. D. Manseau, Micheline Golding, Brian Klütsch, Cornelya F. C. Abraham, Ken Wilson, Paul J. |
author_facet | Horn, Rebekah L. Marques, Adam J. D. Manseau, Micheline Golding, Brian Klütsch, Cornelya F. C. Abraham, Ken Wilson, Paul J. |
author_sort | Horn, Rebekah L. |
collection | PubMed |
description | The parallel evolution of phenotypes or traits within or between species provides important insight into the basic mechanisms of evolution. Genetic and genomic advances have allowed investigations into the genetic underpinnings of parallel evolution and the independent evolution of similar traits in sympatric species. Parallel evolution may best be exemplified among species where multiple genetic lineages, descended from a common ancestor, colonized analogous environmental niches, and converged on a genotypic or phenotypic trait. Modern North American caribou (Rangifer tarandus) originated from three ancestral sources separated during the Last Glacial Maximum (LGM): the Beringian–Eurasian lineage (BEL), the North American lineage (NAL), and the High Arctic lineage (HAL). Historical introgression between the NAL and the BEL has been found throughout Ontario and eastern Manitoba. In this study, we first characterized the functional differentiation in the cytochrome‐b (cytB) gene by identifying nonsynonymous changes. Second, the caribou lineages were used as a direct means to assess site‐specific parallel changes among lineages. There was greater functional diversity within the NAL despite the BEL having greater neutral diversity. The patterns of amino acid substitutions occurring within different lineages supported the parallel evolution of cytB amino acid substitutions suggesting different selective pressures among lineages. This study highlights the independent evolution of identical amino acid substitutions within a wide‐ranging mammal species that have diversified from different ancestral haplogroups and where ecological niches can invoke parallel evolution. |
format | Online Article Text |
id | pubmed-6024114 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-60241142018-07-09 Parallel evolution of site‐specific changes in divergent caribou lineages Horn, Rebekah L. Marques, Adam J. D. Manseau, Micheline Golding, Brian Klütsch, Cornelya F. C. Abraham, Ken Wilson, Paul J. Ecol Evol Original Research The parallel evolution of phenotypes or traits within or between species provides important insight into the basic mechanisms of evolution. Genetic and genomic advances have allowed investigations into the genetic underpinnings of parallel evolution and the independent evolution of similar traits in sympatric species. Parallel evolution may best be exemplified among species where multiple genetic lineages, descended from a common ancestor, colonized analogous environmental niches, and converged on a genotypic or phenotypic trait. Modern North American caribou (Rangifer tarandus) originated from three ancestral sources separated during the Last Glacial Maximum (LGM): the Beringian–Eurasian lineage (BEL), the North American lineage (NAL), and the High Arctic lineage (HAL). Historical introgression between the NAL and the BEL has been found throughout Ontario and eastern Manitoba. In this study, we first characterized the functional differentiation in the cytochrome‐b (cytB) gene by identifying nonsynonymous changes. Second, the caribou lineages were used as a direct means to assess site‐specific parallel changes among lineages. There was greater functional diversity within the NAL despite the BEL having greater neutral diversity. The patterns of amino acid substitutions occurring within different lineages supported the parallel evolution of cytB amino acid substitutions suggesting different selective pressures among lineages. This study highlights the independent evolution of identical amino acid substitutions within a wide‐ranging mammal species that have diversified from different ancestral haplogroups and where ecological niches can invoke parallel evolution. John Wiley and Sons Inc. 2018-05-15 /pmc/articles/PMC6024114/ /pubmed/29988428 http://dx.doi.org/10.1002/ece3.4154 Text en © 2018 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Horn, Rebekah L. Marques, Adam J. D. Manseau, Micheline Golding, Brian Klütsch, Cornelya F. C. Abraham, Ken Wilson, Paul J. Parallel evolution of site‐specific changes in divergent caribou lineages |
title | Parallel evolution of site‐specific changes in divergent caribou lineages |
title_full | Parallel evolution of site‐specific changes in divergent caribou lineages |
title_fullStr | Parallel evolution of site‐specific changes in divergent caribou lineages |
title_full_unstemmed | Parallel evolution of site‐specific changes in divergent caribou lineages |
title_short | Parallel evolution of site‐specific changes in divergent caribou lineages |
title_sort | parallel evolution of site‐specific changes in divergent caribou lineages |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6024114/ https://www.ncbi.nlm.nih.gov/pubmed/29988428 http://dx.doi.org/10.1002/ece3.4154 |
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