@article{Ottenburghs2017-12Avian-41221,
  year={2017},
  doi={10.1186/s40657-017-0088-z},
  title={Avian introgression in the genomic era},
  volume={8},
  journal={Avian Research},
  author={Ottenburghs, Jente and Kraus, Robert and van Hooft, Pim and van Wieren, Sipke E. and Ydenberg, Ronald C. and Prins, Herbert H.T.},
  note={Article Number: 30}
}

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    <dcterms:title>Avian introgression in the genomic era</dcterms:title>
    <dc:creator>Prins, Herbert H.T.</dc:creator>
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    <dc:creator>Ydenberg, Ronald C.</dc:creator>
    <dcterms:abstract xml:lang="eng">Introgression, the incorporation of genetic material from one (sub)species into the gene pool of another by means of hybridization and backcrossing, is a common phenomenon in birds and can provide important insights into the speciation process. In the last decade, the toolkit for studying introgression has expanded together with the development of molecular markers. In this review, we explore how genomic data, the most recent step in this methodological progress, impacts different aspects in the study of avian introgression. First, the detection of hybrids and backcrosses has improved dramatically. The most widely used software package is STRUCTURE. Phylogenetic discordance (i.e. different loci resulting in discordant gene trees) is another means for the detection of introgression, although it should be regarded as a starting point for further analyses, not as a definitive proof of introgression. Specifically, disentangling introgression from other biological processes, such as incomplete lineage sorting, remains a challenging endeavour, although new techniques, such as the D-statistic, are being developed. In addition, phylogenetics might require a shift from trees to networks. Second, the study of hybrid zones by means of geographical or genomic cline analysis has led to important insights into the complex interplay between hybridization and speciation. However, because each hybrid zone study is just a single snapshot of a complex and continuously changing interaction, hybrid zones should be studied across different temporal and/or spatial scales. A third powerful tool is the genome scan. The debate on which evolutionary processes underlie the genomic landscape is still ongoing, as is the question whether loci involved in reproductive isolation cluster together in ‘islands of speciation’ or whether they are scattered throughout the genome. Exploring genomic landscapes across the avian tree of life will be an exciting field for further research. Finally, the findings from these different methods should be incorporated into specific speciation scenarios, which can consequently be tested using a modelling approach. All in all, this genomic perspective on avian hybridization and speciation will further our understanding in evolution in general.</dcterms:abstract>
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    <dcterms:issued>2017-12</dcterms:issued>
    <dc:contributor>Ydenberg, Ronald C.</dc:contributor>
    <dc:contributor>Ottenburghs, Jente</dc:contributor>
    <dc:language>eng</dc:language>
    <dc:contributor>Kraus, Robert</dc:contributor>
    <dc:rights>Attribution 4.0 International</dc:rights>
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    <dc:creator>Kraus, Robert</dc:creator>
    <dc:contributor>van Wieren, Sipke E.</dc:contributor>
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    <dc:contributor>Prins, Herbert H.T.</dc:contributor>
    <dc:creator>van Wieren, Sipke E.</dc:creator>
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    <dc:creator>Ottenburghs, Jente</dc:creator>
    <dc:creator>van Hooft, Pim</dc:creator>
    <dc:contributor>van Hooft, Pim</dc:contributor>
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