What can butterfly hybrid zones tell us about the genomic architecture of species barriers?

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• Dr Konrad Lohse from Institute of Ecology and Evolution, University of Edinburgh
• Thursday 10 October 2024, 14:00-15:00
• Part II room, Department of Genetics and Zoom.

If you have a question about this talk, please contact Caroline Newnham.

Host – Richard Durbin

Hybrid zones are natural experiments that contain a wealth of information about the genetic basis of species differences and barriers to gene flow. However, while speciation is a slow process, most hybrid zones are evolutionarily extremely recent. It is therefore unclear to what extent the mosaic ancestry of hybrid zone individuals is shaped by early and persistent barriers. I will describe genomic work on two butterfly hybrid zones. Comparing barriers inferred across different time scales and methods confirms that regions of low recent hybridisation are concentrated in areas of low recombination and the Z chromosome as predicted by theory. Moreover, we find a substantial overlap between short-term and long-term barriers to gene flow.

This talk is part of the Genetics Seminar series.

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