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• W2968488711 abstract "Event Abstract Back to Event Is ancestral hybridization fuelling adaptive radiation in clownfishes? Sarah Schmid1*, Baptiste Micheli1, Anna Marcionetti1, Joris Bertrand2 and Nicolas Salamin1 1 Université de Lausanne, Switzerland 2 Université de Perpignan Via Domitia, France The contribution of hybridization in the generation of global species diversity has long been a subject of controversy among evolutionary biologists. However it is now increasingly accepted that hybridization has many impacts on the process of speciation. Especially, it is an important mechanism fostering adaptive radiation, because it can generate new phenotypic combinations enabling the occupancy of new niches. Here, we focused on clownfish (Pomacentridae), a clade of 28 coral reef fishes displaying a mutualistic interaction with sea anemones. This behavior is the key innovation that triggered adaptive radiation of clownfishes, as each species is able to occupy a different combination of host anemone species and habitat. Previous work suggested that hybridization might be responsible for the extant diversity of clownfish species. To test this hypothesis, we analyzed whole-genome datasets for each clownfish species. First, we reconstructed the phylogeny of the clade based on topology weighting method, which enables the visualization of the relationships between taxa across the genome. Then, we highlighted possible ancient hybridization events based on comparative genomic framework for detecting introgression in genomes. We highlighted a large amount of significant hybridization between the different clades, which suggests that hybridization occurred between the ancestors of the current species. Moreover, patterns of high heterogeneity in the phylogenetic relationships across the genome might be a consequence of the combined effect of extensive hybridization and polygenic barrier loci. Taken together, these results support the hypothesis of ancestral hybridization occurring during the evolutionary history of clownfishes. Keywords: hybridization, speciation, adaptive radiation, Clownfish, Genomics Conference: XVI European Congress of Ichthyology, Lausanne, Switzerland, 2 Sep - 6 Sep, 2019. Presentation Type: Oral Topic: EVOLUTIONARY GENOMICS OF FISHES Citation: Schmid S, Micheli B, Marcionetti A, Bertrand J and Salamin N (2019). Is ancestral hybridization fuelling adaptive radiation in clownfishes?. Front. Mar. Sci. Conference Abstract: XVI European Congress of Ichthyology. doi: 10.3389/conf.fmars.2019.07.00043 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 29 May 2019; Published Online: 14 Aug 2019. * Correspondence: Mx. Sarah Schmid, Université de Lausanne, Lausanne, Switzerland, sarah.schmid@unil.ch Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Sarah Schmid Baptiste Micheli Anna Marcionetti Joris Bertrand Nicolas Salamin Google Sarah Schmid Baptiste Micheli Anna Marcionetti Joris Bertrand Nicolas Salamin Google Scholar Sarah Schmid Baptiste Micheli Anna Marcionetti Joris Bertrand Nicolas Salamin PubMed Sarah Schmid Baptiste Micheli Anna Marcionetti Joris Bertrand Nicolas Salamin Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page." @default.
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• W2968488711 title "Is ancestral hybridization fuelling adaptive radiation in clownfishes?" @default.
• W2968488711 doi "https://doi.org/10.3389/conf.fmars.2019.07.00043" @default.
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