Show simple item record

Files in this item


Item metadata

dc.contributor.authorTyukmaeva, Venera
dc.contributor.authorSalminen, Tiina S.
dc.contributor.authorKankare, Maaria
dc.contributor.authorKnott, K Emily
dc.contributor.authorHoikkala, Anneli
dc.identifier.citationTyukmaeva , V , Salminen , T S , Kankare , M , Knott , K 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 , vol. 1 , no. 2 , pp. 160-168 .
dc.identifier.otherPURE: 185099958
dc.identifier.otherPURE UUID: a0be8b0d-ecaa-4b79-9d98-e8af36a4c854
dc.identifier.otherScopus: 84855540178
dc.descriptionFunded by Marie Curie Initial Training Network (ITN-2008-213780 SPECIATION).en
dc.description.abstractAdaptation 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.
dc.relation.ispartofEcology and Evolutionen
dc.rightsCopyright 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.en
dc.subjectCritical day lengthen
dc.subjectGene flowen
dc.subjectGenetic variationen
dc.subjectPopulation structureen
dc.subjectSeasonal adaptationen
dc.subjectQH301 Biologyen
dc.titleAdaptation to a seasonally varying environment : a strong latitudinal cline in reproductive diapause combined with high gene flow in Drosophila montanaen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record