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The role of recombination dynamics in shaping signatures of direct and indirect selection across the Ficedula flycatcher genome
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- Chase, Madeline (author)
- Uppsala universitet,Evolutionsbiologi,Uppsala Univ, Dept Ecol & Genet, S-75236 Uppsala, Sweden.;Swiss Ornithol Inst, CH-6204 Sempach, Switzerland.
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- Vilcot, Maurine (author)
- Uppsala Univ, Dept Ecol & Genet, S-75236 Uppsala, Sweden.;Univ Montpellier, CEFE, CNRS, EPHE,IRD, F-34293 Montpellier 5, France.
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- Mugal, Carina (author)
- Uppsala universitet,Evolutionsbiologi,Uppsala Univ, Dept Ecol & Genet, S-75236 Uppsala, Sweden.;Univ Lyon 1, Lab Biometry & Evolutionary Biol, CNRS, UMR 5558, F-69622 Villeurbanne, France.
- (creator_code:org_t)
- ROYAL SOC, 2024
- 2024
- English.
- In: Proceedings of the Royal Society of London. Biological Sciences. - : ROYAL SOC. - 0962-8452 .- 1471-2954. ; 291:2015
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Recombination is a central evolutionary process that reshuffles combinations of alleles along chromosomes, and consequently is expected to influence the efficacy of direct selection via Hill-Robertson interference. Additionally, the indirect effects of selection on neutral genetic diversity are expected to show a negative relationship with recombination rate, as background selection and genetic hitchhiking are stronger when recombination rate is low. However, owing to the limited availability of recombination rate estimates across divergent species, the impact of evolutionary changes in recombination rate on genomic signatures of selection remains largely unexplored. To address this question, we estimate recombination rate in two Ficedula flycatcher species, the taiga flycatcher (Ficedula albicilla) and collared flycatcher (Ficedula albicollis). We show that recombination rate is strongly correlated with signatures of indirect selection, and that evolutionary changes in recombination rate between species have observable impacts on this relationship. Conversely, signatures of direct selection on coding sequences show little to no relationship with recombination rate, even when restricted to genes where recombination rate is conserved between species. Thus, using measures of indirect and direct selection that bridge micro- and macro-evolutionary timescales, we demonstrate that the role of recombination rate and its dynamics varies for different signatures of selection.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
Keyword
- meiotic recombination
- linked selection
- direct selection
- speciation
- Hill-Robertson interference
Publication and Content Type
- ref (subject category)
- art (subject category)
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