Adaptation to a seasonally varying environment: a strong latitudinal cline in reproductive diapause combined with high gene flow in Drosophila montana

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dc.contributor.author Tyukmaeva, Venera
dc.contributor.author Salminen, Tiina
dc.contributor.author Kankare, Maaria
dc.contributor.author Knott, Emily
dc.contributor.author Hoikkala, Anneli
dc.date.accessioned 2012-11-02T08:38:05Z
dc.date.available 2012-11-02T08:38:05Z
dc.date.issued 2011
dc.identifier.citation Tyukmaeva, V., Salminen, T., Kankare, M., Knott, E., & Hoikkala, A. (2011). Adaptation to a seasonally varying environment: a strong latitudinal cline in reproductive diapause combined with high gene flow in Drosophila montana. Ecology and Evolution, 1 (2), 160-168. doi:10.1002/ece3.14
dc.identifier.issn 2045-7758
dc.identifier.uri http://hdl.handle.net/123456789/40155
dc.description.abstract Adaptation to seasonal changes in the northern hemisphere includes an ability to predict the forthcoming cold season from gradual changes in environmental cues early enough to prepare for the harsh winter conditions. The magnitude and speed of changes in these cues vary between the latitudes, which induces strong selection pressures for local adaptation. We studied adaptation to seasonal changes in Drosophila montana, a northern maltfly, by defining the photoperiodic conditions leading to adult reproductive diapause along a latitudinal cline in Finland and by measuring genetic differentiation and the amount of gene flow between the sampling sites with microsatellites. Our data revealed a clear correlation between the latitude and the critical day length (CDL), in which half of the females of different cline populations enter photoperiodic reproductive diapause. There was no sign of limited gene flow between the cline populations, even though these populations showed isolation by distance. Our results show that local adaptation may occur even in the presence of high gene flow, when selection for locally adaptive life-history traits is strong. A wide range of variation in the CDLs of the fly strains within and between the cline populations may be partly due to gene flow and partly due to the opposing selection pressures for fly reproduction and overwinter survival. This variation in the timing of diapause will enhance populations’ survival over the years that differ in the severity of the winter and in the length of the warm period and may also help them respond to long-term changes in environmental conditions. fi
dc.language.iso eng
dc.publisher Wiley-Blackwell
dc.relation.ispartofseries Ecology and Evolution
dc.relation.uri http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2045-7758
dc.rights © 2011 The Authors. Published by Blackwell Publishing Ltd. This is an Open Access article under the terms of the Creative Commons Attribution Non Commercial License which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
dc.rights.uri http://creativecommons.org/licenses/by/3.0/
dc.subject.other critical day length fi
dc.subject.other gene flow en
dc.subject.other genetic variation en
dc.subject.other microsatellites en
dc.subject.other population structure en
dc.subject.other seasonal adaptation en
dc.title Adaptation to a seasonally varying environment: a strong latitudinal cline in reproductive diapause combined with high gene flow in Drosophila montana
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-201211022842
dc.subject.kota 118
dc.contributor.laitos Department of Biological and Environmental Science en
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.type.uri http://purl.org/eprint/type/JournalArticle
dc.identifier.doi 10.1002/ece3.14
dc.description.version Publisher's PDF
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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