Contrasting population-level responses to Pleistocene climatic oscillations in an alpine bat revealed by complete mitochondrial genomes and evolutionary history inference
MetadataShow full item record
Aim We used an integrative approach to reconstruct the evolutionary history of the alpine long-eared bat, Plecotus macrobullaris, to test whether the variable effects of Pleistocene climatic oscillations across geographical regions led to contrasting population-level demographic histories within a single species. Location The Western Palaearctic. Methods We sequenced the complete mitochondrial genomes of 57 individuals from across the distribution of the species. The analysis integrated ecological niche modelling (ENM), approximate Bayesian computation (ABC), measures of genetic diversity and Bayesian phylogenetic methods. Results We identified two deep lineages: a western lineage, restricted to the Pyrenees and the Alps, and an eastern lineage, which expanded across the mountain ranges east of the Dinarides (Croatia). ENM projections of past conditions predicted that climatic suitability was reduced during cold stages in the areas inhabited by the western lineage, while the opposite trend was observed in the mountains inhabited by the eastern lineage. The palaeodemographic scenario that best fitted our data is consistent with the western lineage population size having shrunk repeatedly because of the extensive glaciation events that occurred in the Alps and Pyrenees during the Pleistocene. In contrast, the eastern lineage maintained a constant population size as is consistent with more limited glaciation in the mountains of south-eastern Europe and the Middle East. Main conclusions This study shows that the demographic response of populations to Pleistocene climatic oscillations depended on their geographical location, offering an example of population-level variations in the effects and longterm consequences of climate change.
Showing items related by title, author, creator and subject.
Isolated with persistence or dynamically connected? Genetic patterns in a common granite outcrop endemicTapper, S.; Byrne, B.; Yates, C.; Keppel, Gunnar; Hopper, S.; Van Niel, K.; Schut, Tom; Mucina, Ladislav; Wardell-Johnson, Grant (2014)Aim - Granite outcrops are prominent throughout the world and harbour many endemic species. Their topographic complexity and range of environments have led to the hypothesis that they act as refugia facilitating the ...
Regal phylogeography: Range-wide survey of the marine angelfish Pygoplites diacanthus reveals evolutionary partitions between the Red Sea, Indian Ocean, and Pacific OceanColeman, R.; Eble, J.; Di Battista, Joseph; Rocha, L.; Randall, J.; Berumen, M.; Bowen, B. (2016)The regal angelfish (Pygoplites diacanthus; family Pomacanthidae) occurs on reefs from the Red Sea to the central Pacific, with an Indian Ocean/Rea Sea color morph distinct from a Pacific Ocean morph. To assess population ...
Ancient DNA reveals that bowhead whale lineages survived Late Pleistocene climate change and habitat shiftsFoote, A.; Kaschner, K.; Schultze, S.; Garilao, C.; Ho, S.; Post, K.; Higham, T.; Stokowska, C.; Van der Es, H.; Embling, C.; Gregersen, K.; Johansson, F.; Willerslev, E.; Gilbert, Thomas (2013)The climatic changes of the glacial cycles are thought to have been a major driver of population declines and species extinctions. However, studies to date have focused on terrestrial fauna and there is little understanding ...