Low but contrasting neutral genetic differentiation shaped by winter temperature in European great tits

Lemoine, Mélissa; Lucek, Kay Jurka Olaf; Perrier, Charles; Saladin, Verena; Adriaensen, Frank; Barba, Emilio; Belda, Eduardo J.; Charmantier, Anne; Cichoń, Mariusz; Eeva, Tapio; Grégoire, Arnaud; Hinde, Camilla A.; Johnsen, Arild; Komdeur, Jan; Mänd, Raivo; Matthysen, Erik; Norte, Ana Cláudia; Pitala, Natalia; Sheldon, Ben C.; Slagsvold, Tore; ... (2016). Low but contrasting neutral genetic differentiation shaped by winter temperature in European great tits. Biological journal of the Linnean Society, 118(3), pp. 668-685. Blackwell Publishing 10.1111/bij.12745

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Gene flow is usually thought to reduce genetic divergence and impede local adaptation by homogenising gene pools between populations. However, evidence for local adaptation and phenotypic differentiation in highly mobile species, experiencing high levels of gene flow, is emerging. Assessing population genetic structure at different spatial scales is thus a crucial step towards understanding mechanisms underlying intraspecific differentiation and diversification. Here, we studied the population genetic structure of a highly mobile species – the great tit Parus major – at different spatial scales. We analysed 884 individuals from 30 sites across Europe including 10 close-by sites (< 50 km), using 22 microsatellite markers. Overall we found a low but significant genetic differentiation among sites (FST = 0.008). Genetic differentiation was higher, and genetic diversity lower, in south-western Europe. These regional differences were statistically best explained by winter temperature. Overall, our results suggest that great tits form a single patchy metapopulation across Europe, in which genetic differentiation is independent of geographical distance and gene flow may be regulated by environmental factors via movements related to winter severity. This might have important implications for the evolutionary trajectories of sub-populations, especially in the context of climate change, and calls for future investigations of local differences in costs and benefits of philopatry at large scales.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Evolutionary Ecology
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)

UniBE Contributor:

Lemoine, Mélissa; Lucek, Kay Jurka Olaf; Saladin, Verena; Doligez, Blandine and Richner, Heinz

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

0024-4066

Publisher:

Blackwell Publishing

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

25 Apr 2016 14:52

Last Modified:

26 Jun 2016 02:13

Publisher DOI:

10.1111/bij.12745

BORIS DOI:

10.7892/boris.78678

URI:

https://boris.unibe.ch/id/eprint/78678

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