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The genomics of ecological vicariance in threespine stickleback fish
Populations occurring in similar habitats and displaying similar phenotypes are increasingly used to explore parallel evolution at the molecular level. This generally ignores the possibility that parallel evolution can be mimicked by the fragmentation of an ancestral population followed by genetic e...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4659939/ https://www.ncbi.nlm.nih.gov/pubmed/26556609 http://dx.doi.org/10.1038/ncomms9767 |
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author | Roesti, Marius Kueng, Benjamin Moser, Dario Berner, Daniel |
author_facet | Roesti, Marius Kueng, Benjamin Moser, Dario Berner, Daniel |
author_sort | Roesti, Marius |
collection | PubMed |
description | Populations occurring in similar habitats and displaying similar phenotypes are increasingly used to explore parallel evolution at the molecular level. This generally ignores the possibility that parallel evolution can be mimicked by the fragmentation of an ancestral population followed by genetic exchange with ecologically different populations. Here we demonstrate such an ecological vicariance scenario in multiple stream populations of threespine stickleback fish divergent from a single adjacent lake population. On the basis of demographic and population genomic analyses, we infer the initial spread of a stream-adapted ancestor followed by the emergence of a lake-adapted population, that selective sweeps have occurred mainly in the lake population, that adaptive lake–stream divergence is maintained in the face of gene flow from the lake into the streams, and that this divergence involves major inversion polymorphisms also important to marine-freshwater stickleback divergence. Overall, our study highlights the need for a robust understanding of the demographic and selective history in evolutionary investigations. |
format | Online Article Text |
id | pubmed-4659939 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46599392015-12-04 The genomics of ecological vicariance in threespine stickleback fish Roesti, Marius Kueng, Benjamin Moser, Dario Berner, Daniel Nat Commun Article Populations occurring in similar habitats and displaying similar phenotypes are increasingly used to explore parallel evolution at the molecular level. This generally ignores the possibility that parallel evolution can be mimicked by the fragmentation of an ancestral population followed by genetic exchange with ecologically different populations. Here we demonstrate such an ecological vicariance scenario in multiple stream populations of threespine stickleback fish divergent from a single adjacent lake population. On the basis of demographic and population genomic analyses, we infer the initial spread of a stream-adapted ancestor followed by the emergence of a lake-adapted population, that selective sweeps have occurred mainly in the lake population, that adaptive lake–stream divergence is maintained in the face of gene flow from the lake into the streams, and that this divergence involves major inversion polymorphisms also important to marine-freshwater stickleback divergence. Overall, our study highlights the need for a robust understanding of the demographic and selective history in evolutionary investigations. Nature Pub. Group 2015-11-10 /pmc/articles/PMC4659939/ /pubmed/26556609 http://dx.doi.org/10.1038/ncomms9767 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Roesti, Marius Kueng, Benjamin Moser, Dario Berner, Daniel The genomics of ecological vicariance in threespine stickleback fish |
title | The genomics of ecological vicariance in threespine stickleback fish |
title_full | The genomics of ecological vicariance in threespine stickleback fish |
title_fullStr | The genomics of ecological vicariance in threespine stickleback fish |
title_full_unstemmed | The genomics of ecological vicariance in threespine stickleback fish |
title_short | The genomics of ecological vicariance in threespine stickleback fish |
title_sort | genomics of ecological vicariance in threespine stickleback fish |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4659939/ https://www.ncbi.nlm.nih.gov/pubmed/26556609 http://dx.doi.org/10.1038/ncomms9767 |
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