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Laboratory Selection Quickly Erases Historical Differentiation
The roles of history, chance and selection have long been debated in evolutionary biology. Though uniform selection is expected to lead to convergent evolution between populations, contrasting histories and chance events might prevent them from attaining the same adaptive state, rendering evolution...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4008540/ https://www.ncbi.nlm.nih.gov/pubmed/24788553 http://dx.doi.org/10.1371/journal.pone.0096227 |
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author | Fragata, Inês Simões, Pedro Lopes-Cunha, Miguel Lima, Margarida Kellen, Bárbara Bárbaro, Margarida Santos, Josiane Rose, Michael R. Santos, Mauro Matos, Margarida |
author_facet | Fragata, Inês Simões, Pedro Lopes-Cunha, Miguel Lima, Margarida Kellen, Bárbara Bárbaro, Margarida Santos, Josiane Rose, Michael R. Santos, Mauro Matos, Margarida |
author_sort | Fragata, Inês |
collection | PubMed |
description | The roles of history, chance and selection have long been debated in evolutionary biology. Though uniform selection is expected to lead to convergent evolution between populations, contrasting histories and chance events might prevent them from attaining the same adaptive state, rendering evolution somewhat unpredictable. The predictability of evolution has been supported by several studies documenting repeatable adaptive radiations and convergence in both nature and laboratory. However, other studies suggest divergence among populations adapting to the same environment. Despite the relevance of this issue, empirical data is lacking for real-time adaptation of sexual populations with deeply divergent histories and ample standing genetic variation across fitness-related traits. Here we analyse the real-time evolutionary dynamics of Drosophila subobscura populations, previously differentiated along the European cline, when colonizing a new common environment. By analysing several life-history, physiological and morphological traits, we show that populations quickly converge to the same adaptive state through different evolutionary paths. In contrast with other studies, all analysed traits fully converged regardless of their association with fitness. Selection was able to erase the signature of history in highly differentiated populations after just a short number of generations, leading to consistent patterns of convergent evolution. |
format | Online Article Text |
id | pubmed-4008540 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-40085402014-05-09 Laboratory Selection Quickly Erases Historical Differentiation Fragata, Inês Simões, Pedro Lopes-Cunha, Miguel Lima, Margarida Kellen, Bárbara Bárbaro, Margarida Santos, Josiane Rose, Michael R. Santos, Mauro Matos, Margarida PLoS One Research Article The roles of history, chance and selection have long been debated in evolutionary biology. Though uniform selection is expected to lead to convergent evolution between populations, contrasting histories and chance events might prevent them from attaining the same adaptive state, rendering evolution somewhat unpredictable. The predictability of evolution has been supported by several studies documenting repeatable adaptive radiations and convergence in both nature and laboratory. However, other studies suggest divergence among populations adapting to the same environment. Despite the relevance of this issue, empirical data is lacking for real-time adaptation of sexual populations with deeply divergent histories and ample standing genetic variation across fitness-related traits. Here we analyse the real-time evolutionary dynamics of Drosophila subobscura populations, previously differentiated along the European cline, when colonizing a new common environment. By analysing several life-history, physiological and morphological traits, we show that populations quickly converge to the same adaptive state through different evolutionary paths. In contrast with other studies, all analysed traits fully converged regardless of their association with fitness. Selection was able to erase the signature of history in highly differentiated populations after just a short number of generations, leading to consistent patterns of convergent evolution. Public Library of Science 2014-05-02 /pmc/articles/PMC4008540/ /pubmed/24788553 http://dx.doi.org/10.1371/journal.pone.0096227 Text en © 2014 Fragata et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Fragata, Inês Simões, Pedro Lopes-Cunha, Miguel Lima, Margarida Kellen, Bárbara Bárbaro, Margarida Santos, Josiane Rose, Michael R. Santos, Mauro Matos, Margarida Laboratory Selection Quickly Erases Historical Differentiation |
title | Laboratory Selection Quickly Erases Historical Differentiation |
title_full | Laboratory Selection Quickly Erases Historical Differentiation |
title_fullStr | Laboratory Selection Quickly Erases Historical Differentiation |
title_full_unstemmed | Laboratory Selection Quickly Erases Historical Differentiation |
title_short | Laboratory Selection Quickly Erases Historical Differentiation |
title_sort | laboratory selection quickly erases historical differentiation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4008540/ https://www.ncbi.nlm.nih.gov/pubmed/24788553 http://dx.doi.org/10.1371/journal.pone.0096227 |
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