Genes, Volume 10, Issue 8
2019 August - 75 articles
Cover Story: We investigated the mechanisms explaining the colonisation of Cantabrian sky islands (Spain) in an endemic flightless grasshopper (Chorthippus cazurroi). We evaluated the fitting of two migration models to understand the extant genetic structure in these populations: long-distance dispersal (LDD) and gradual distance dispersal (GDD). We found that GDD fits the real data better than LDD model, with an onset of the expansion matching with postglacial expansions after the retreat of the ice sheets. The gradual expansion process along the Cantabrian sky islands found here seems to be conditioned by the suitability of habitats and the presence of alpine corridors. Our findings shed light on our understanding about how organisms adapted to live in alpine habitats with limited dispersal abilities have faced new and suitable environmental conditions. View this paper. - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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