Data from: Widespread hybridisation and bi-directional introgression in sympatric species of coral reef fish

Data consists of 2 files:

(1) 25 microsatellite loci for 2991 Plectropomus spp. collected from the southern Great Barrier Reef, Australia

(2) 2271 SNP loci from 80 Plectropomus spp. including identified hybrids collected from the southern Great Barrier Reef, Australia

Abstract [Related Publication]: 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.

The full methodology is available in the publication shown in the Related Publications link below.

 

    Data Record Details
    Data record related to this publication Data from: Widespread hybridisation and bi-directional introgression in sympatric species of coral reef fish
    Data Publication title Data from: Widespread hybridisation and bi-directional introgression in sympatric species of coral reef fish
  • Description

    Data consists of 2 files:

    (1) 25 microsatellite loci for 2991 Plectropomus spp. collected from the southern Great Barrier Reef, Australia

    (2) 2271 SNP loci from 80 Plectropomus spp. including identified hybrids collected from the southern Great Barrier Reef, Australia

    Abstract [Related Publication]: 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.

    The full methodology is available in the publication shown in the Related Publications link below.

     

  • Other Descriptors
    • Descriptor

      This dataset is available from Dryad in plain text (.txt) format. Dryad data package: Harrison H, Berumen M, Saenz-Agudelo P, Salas E, Williamson D, Jones G (2017) Data from: Widespread hybridisation and bi-directional introgression in sympatric species of coral reef fish. Dryad Digital Repository. https://doi.org/10.5061/dryad.v861k

    • Descriptor type Note
  • Data type dataset
  • Keywords
    • ecological genetics
    • fish
    • hybridization
    • natural selection and contemporary evolution
    • population ecology
    • Plectropomus leopardus
    • Plectropomus maculatus
    • ARC Centre of Excellence for Coral Reef Studies
  • Funding source
  • Research grant(s)/Scheme name(s)
  • Research themes
    Tropical Ecosystems, Conservation and Climate Change
    FoR Codes (*)
    • 060411 - Population, Ecological and Evolutionary Genetics
    SEO Codes
    Specify spatial or temporal setting of the data
    Temporal (time) coverage
  • Start Date
  • End Date
  • Time Period
    Spatial (location) coverage
  • Locations
    • Keppel Islands, Great Barrier Reef, Queensland, Australia (23°10′S, 150°57′E)
    Data Locations

    Type Location Notes
    URL https://doi.org/10.5061/dryad.v861k
    The Data Manager is: Hugo Harrison
    College or Centre
    Access conditions Open: free access under license
  • Alternative access conditions
  • Data record size 2 files: 1.7 MB
  • Related publications
      Name Harrison, Hugo B., Berumen, Michael L., Saenz-Agudelo, Pablo, Salas, Eva, Williamson, David H. and Jones, Geoffrey P. (2017) Widespread hybridization and bidirectional introgression in sympatric species of coral reef fish. Molecular Ecology, 26(2). pp. 5692-5704.
    • URL http://dx.doi.org/10.1111/mec.14279
    • Notes
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  • Related metadata (including standards, codebooks, vocabularies, thesauri, ontologies)
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    • Notes
    Citation Harrison, Hugo; Williamson, David; Jones, Geoffrey; Berumen, M; Saenz-Agudelo, P (2017): Data from: Widespread hybridisation and bi-directional introgression in sympatric species of coral reef fish. James Cook University.