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    Data from: Widespread hybridization and bidirectional introgression in sympatric species of coral reef fish

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    Type
    Dataset
    Authors
    Harrison, Hugo B.
    Berumen, Michael L. cc
    Saenz-Agudelo, Pablo
    Salas, Eva
    Williamson, David H.
    Jones, Geoffrey P.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Marine Science Program
    Red Sea Research Center (RSRC)
    Reef Ecology Lab
    Date
    2017
    Permanent link to this record
    http://hdl.handle.net/10754/663919
    
    Metadata
    Show full item record
    Abstract
    Coral reefs are highly diverse ecosystems, where numerous closely related species often coexist. How new species arise and are maintained in these high geneflow environments have been long-standing conundrums. Hybridization and patterns of introgression between sympatric species provide a unique insight into the mechanisms of speciation and the maintenance of species boundaries. In this study, we investigate the extent of hybridization between two closely related species of coral reef fish: the common coral trout (Plectropomus leopardus) and the bar-cheek coral trout (Plectropomus maculatus). Using a complementary set of 25 microsatellite loci, we distinguish pure genotype classes from first- and later-generation hybrids, identifying 124 interspecific hybrids from a collection of 2,991 coral trout sampled in inshore and mid-shelf reefs of the southern Great Barrier Reef. Hybrids were ubiquitous among reefs, fertile and spanned multiple generations suggesting both ecological and evolutionary processes are acting to maintain species barriers. We elaborate on these finding to investigate the extent of genomic introgression and admixture from 2,271 SNP loci recovered from a ddRAD library of pure and hybrid individuals. An analysis of genomic clines on recovered loci indicates that 261 SNP loci deviate from a model of neutral introgression, of which 132 indicate a pattern of introgression consistent with selection favouring both hybrid and parental genotypes. Our findings indicate genome-wide, bidirectional introgression between two sympatric species of coral reef fishes and provide further support to a growing body of evidence for the role of hybridization in the evolution of coral reef fishes.
    Citation
    Harrison, H. B., Berumen, M. L., Saenz-Agudelo, P., Salas, E., Williamson, D. H., & Jones, G. P. (2017). Data from: Widespread hybridization and bidirectional introgression in sympatric species of coral reef fish (Version 1) [Data set]. Dryad. https://doi.org/10.5061/DRYAD.V861K
    Publisher
    Dryad
    DOI
    10.5061/dryad.v861k
    Relations
    Is Supplement To:
    • [Article]
      Harrison HB, Berumen ML, Saenz-Agudelo P, Salas E, Williamson DH, et al. (2017) Widespread hybridization and bidirectional introgression in sympatric species of coral reef fish. Molecular Ecology 26: 5692–5704. Available: http://dx.doi.org/10.1111/mec.14279.. DOI: 10.1111/mec.14279 HANDLE: 10754/626129
    ae974a485f413a2113503eed53cd6c53
    10.5061/dryad.v861k
    Scopus Count
    Collections
    Biological and Environmental Science and Engineering (BESE) Division; Red Sea Research Center (RSRC); Marine Science Program; Datasets

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