Séminaire de Nusha KEYGHOBADI (Western University, Canada)



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Le vendredi 13 juillet 2018 à 13h00, salle de conférences de l'OSUR, bâtiment 14b, Campus de Beaulieu, UR1

Le vendredi 13 juillet 2018 à 13h00, salle de conférences de l'OSUR, bâtiment 14b, Campus de Beaulieu, UR1

Landscape genetics in a dynamic world: case study of an alpine butterfly

Abstract: Population geneticists have long been interested in the factors that determine genetic variation within and among populations. Landscape genetics focuses specifically on the role of landscape structure in shaping patterns of genetic variation, primarily through effects on dispersal. Many theoretical and empirical studies in landscape genetics assume stable population sizes, yet real populations are dynamic and show temporal fluctuations in size. Such demographic fluctuations affect patterns of genetic variation on both short and long time scales, and can influence the observed relationships between genetic variation and landscape structure. Long-term ecological and genetic studies of a spatial network of populations of an alpine butterfly (the Rocky Mountain apollo, Parnassius smintheus) have allowed us to examine how genetic variation, and its association with landscape structure, changes across demographic cycles. Our results indicate a system in which genetic variation is highly dynamic, probably never at equilibrium, and responds rapidly to changes in demography.
Contact: Nusha KEYGHOBADI
Affiche Seminaire 130718




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