Martin Plath, Markus Pfenninger, Hannes Lerp, Rüdiger Riesch, Christoph Eschenbrenner, Patrick A. Slattery, David Bierbach, Nina Herrmann, Matthias Schulte, Lenin Arias-Rodriguez, Jeane Rimber Indy, Courtney Passow, Michael Tobler
- We investigated mechanisms of reproductive isolation in livebearing fishes (genus Poecilia) inhabiting sulfidic and nonsulfidic habitats in three replicate river drainages. Although sulfide spring fish convergently evolved divergent phenotypes, it was unclear if mechanisms of reproductive isolation also evolved convergently. Using microsatellites, we found strongly reduced gene flow between adjacent populations from different habitat types, suggesting that local adaptation to sulfidic habitats repeatedly caused the emergence of reproductive isolation. Reciprocal translocation experiments indicate strong selection against immigrants into sulfidic waters, but also variation among drainages in the strength of selection against immigrants into nonsulfidic waters. Mate choice experiments revealed the evolution of assortative mating preferences in females from nonsulfidic but not from sulfidic habitats. The inferred strength of sexual selection against immigrants (RIs) was negatively correlated with the strength of natural selection (RIm),We investigated mechanisms of reproductive isolation in livebearing fishes (genus Poecilia) inhabiting sulfidic and nonsulfidic habitats in three replicate river drainages. Although sulfide spring fish convergently evolved divergent phenotypes, it was unclear if mechanisms of reproductive isolation also evolved convergently. Using microsatellites, we found strongly reduced gene flow between adjacent populations from different habitat types, suggesting that local adaptation to sulfidic habitats repeatedly caused the emergence of reproductive isolation. Reciprocal translocation experiments indicate strong selection against immigrants into sulfidic waters, but also variation among drainages in the strength of selection against immigrants into nonsulfidic waters. Mate choice experiments revealed the evolution of assortative mating preferences in females from nonsulfidic but not from sulfidic habitats. The inferred strength of sexual selection against immigrants (RIs) was negatively correlated with the strength of natural selection (RIm), a pattern that could be attributed to reinforcement, whereby natural selection strengthens behavioral isolation due to reduced hybrid fitness. Overall, reproductive isolation and genetic differentiation appear to be replicated and direct consequences of local adaptation to sulfide spring environments, but the relative contributions of different mechanisms of reproductive isolation vary across these evolutionarily independent replicates, highlighting both convergent and nonconvergent evolutionary trajectories of populations in each drainage.…
MetadatenAuthor details: | Martin PlathORCiD, Markus Pfenninger, Hannes Lerp, Rüdiger RieschORCiD, Christoph Eschenbrenner, Patrick A. Slattery, David Bierbach, Nina Herrmann, Matthias Schulte, Lenin Arias-Rodriguez, Jeane Rimber Indy, Courtney Passow, Michael Tobler |
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DOI: | https://doi.org/10.1111/evo.12133 |
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ISSN: | 0014-3820 |
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Title of parent work (English): | Evolution |
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Publisher: | Wiley-Blackwell |
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Place of publishing: | Hoboken |
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Publication type: | Article |
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Language: | English |
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Year of first publication: | 2013 |
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Publication year: | 2013 |
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Release date: | 2017/03/26 |
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Tag: | Ecological speciation; Poecilia mexicana; isolation-by-adaptation; local adaptation; reinforcement; sexual isolation |
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Volume: | 67 |
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Issue: | 9 |
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Number of pages: | 15 |
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First page: | 2647 |
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Last Page: | 2661 |
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Funding institution: | German Science Foundation (DFG) [PL 470/1-2, PL 470/3-1]; German
Academic Exchange Service (DAAD); initiative Nach-wuchswissenschaftler
im Fokus by the presidential office of the University of Frankfurt;
Herrmann Willkomm-Foundation; research funding program LOEWE -
Landesoffensive zur Entwicklung wissenschaftlich-okonomischer Exzellenz
of Hesse's Ministry of Higher Education, Research, and the Arts;
Stiftung Polytechnische Gesellschaft Frankfurt am Main; Erwin
Riesch-Stiftung; National Science Foundation [IOS-1121832] |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
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Peer review: | Referiert |
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