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Epistatic mutations under divergent selection govern phenotypic variation in the crow hybrid zone
Stockholm University, Faculty of Science, Department of Zoology. Uppsala University, Sweden; University of California, USA.
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Number of Authors: 82019 (English)In: Nature Ecology & Evolution, E-ISSN 2397-334X, Vol. 3, no 4, p. 570-576Article in journal (Refereed) Published
Abstract [en]

The evolution of genetic barriers opposing interspecific gene flow is key to the origin of new species. Drawing from information on over 400 admixed genomes sourced from replicate transects across the European hybrid zone between all-black carrion crows and grey-coated hooded crows, we decipher the interplay between phenotypic divergence and selection at the molecular level. Over 68% of plumage variation was explained by epistasis between the gene NDP and a similar to 2.8-megabase region on chromosome 18 with suppressed recombination. Both pigmentation loci showed evidence for divergent selection resisting introgression. This study reveals how few, large-effect loci can govern prezygotic isolation and shield phenotypic divergence from gene flow.

Place, publisher, year, edition, pages
2019. Vol. 3, no 4, p. 570-576
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Biological Sciences
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URN: urn:nbn:se:su:diva-168591DOI: 10.1038/s41559-019-0847-9ISI: 000462542100018PubMedID: 30911146OAI: oai:DiVA.org:su-168591DiVA, id: diva2:1316899
Available from: 2019-05-21 Created: 2019-05-21 Last updated: 2019-05-21Bibliographically approved

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Bossu, Christen M.Hansson, BengtWolf, Jochen B. W.
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