Unravelling the evolutionary history and future prospects of endemic species restricted to former glacial refugia

Molecular Ecology
Orly RazgourJavier Juste

Abstract

The contemporary distribution and genetic composition of biodiversity bear a signature of species' evolutionary histories and the effects of past climatic oscillations. For many European species, the Mediterranean peninsulas of Iberia, Italy and the Balkans acted as glacial refugia and the source of range recolonization, and as a result, they contain disproportionately high levels of diversity. As these areas are particularly threatened by future climate change, it is important to understand how past climatic changes affected their biodiversity. We use an integrated approach, combining markers with different evolutionary rates and combining phylogenetic analysis with approximate Bayesian computation and species distribution modelling across temporal scales. We relate phylogeographic processes to patterns of genetic variation in Myotis escalerai, a bat species endemic to the Iberian Peninsula. We found a distinct population structure at the mitochondrial level with a strong geographic signature, indicating lineage divergence into separate glacial refugia within the Iberian refugium. However, microsatellite markers suggest higher levels of gene flow resulting in more limited structure at recent time frames. The evolutionary histo...Continue Reading

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Citations

Oct 6, 2016·PloS One·Gloriana ChaverriJoxerra Aihartza
May 8, 2019·Proceedings of the National Academy of Sciences of the United States of America·Orly RazgourStéphanie Manel
Jan 5, 2021·Ecology and Evolution·Roberto Novella-FernandezOrly Razgour

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