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Multispecies hybridization in birds
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology. Wageningen Univ, Resource Ecol Grp, Droevendaalsesteeg 3a, NL-6708 PB Wageningen, Netherlands.ORCID iD: 0000-0002-0335-9655
2019 (English)In: Avian Research, ISSN 0005-2175, E-ISSN 2053-7166, Vol. 10, article id 20Article, review/survey (Refereed) Published
Abstract [en]

Hybridization is not always limited to two species; often multiple species are interbreeding. In birds, there are numerous examples of species that hybridize with multiple other species. The advent of genomic data provides the opportunity to investigate the ecological and evolutionary consequences of multispecies hybridization. The interactions between several hybridizing species can be depicted as a network in which the interacting species are connected by edges. Such hybrid networks can be used to identify hub-species' that interbreed with multiple other species. Avian examples of such hub-species' are Common Pheasant (Phasianus colchicus), Mallard (Anas platyrhynchos) and European Herring Gull (Larus argentatus). These networks might lead to the formulation of hypotheses, such as which connections are most likely conducive to interspecific gene flow (i.e. introgression). Hybridization does not necessarily result in introgression. Numerous statistical tests are available to infer interspecific gene flow from genetic data and the majority of these tests can be applied in a multispecies setting. Specifically, model-based approaches and phylogenetic networks are promising in the detection and characterization of multispecies introgression. It remains to be determined how common multispecies introgression in birds is and how often this process fuels adaptive changes. Moreover, the impact of multispecies hybridization on the build-up of reproductive isolation and the architecture of genomic landscapes remains elusive. For example, introgression between certain species might contribute to increased divergence and reproductive isolation between those species and other related species. In the end, a multispecies perspective on hybridization in combination with network approaches will lead to important insights into the history of life on this planet.

Place, publisher, year, edition, pages
BioMed Central, 2019. Vol. 10, article id 20
Keywords [en]
Adaptation, Admixture, Genomics, Introgression, Network analysis, Phylogenetics, Speciation
National Category
Genetics
Identifiers
URN: urn:nbn:se:uu:diva-389916DOI: 10.1186/s40657-019-0159-4ISI: 000471600200001OAI: oai:DiVA.org:uu-389916DiVA, id: diva2:1340167
Available from: 2019-08-02 Created: 2019-08-02 Last updated: 2019-08-02Bibliographically approved

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