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Université de Fribourg

The genomic and physiological basis of life history variation in a butterfly metapopulation

Klepsatel, Peter ; Flatt, Thomas

In: Molecular Ecology, 2011, vol. 20, no. 9, p. 1795-1798

Unravelling the mechanisms underlying variation in life history traits is of fundamental importance for our understanding of adaptation by natural selection. While progress has been made in mapping fitness-related phenotypes to genotypes, mainly in a handful of model organisms, functional genomic studies of life history adaptations are still in their infancy. In particular, despite a few...

Université de Fribourg

Differential introgression reveals candidate genes for selection across a spruce (Picea sitchensis × P. glauca) hybrid zone

Hamilton, Jill A. ; Lexer, Christian ; Aitken, Sally N.

In: New Phytologist, 2013, vol. 197, no. 3, p. 927–938

Differential patterns of introgression between species across ecological gradients provide a fine-scale depiction of extrinsic and intrinsic factors that contribute to the maintenance of species barriers and adaptation across heterogeneous environments. Introgression was examined for 721 individuals collected from the ecological transition zone spanning maritime to continental climates within the...

Université de Fribourg

Predicting adaptive evolution under elevated atmospheric CO₂ in the perennial grass Bromus erectus

Steinger, Thomas ; Stephan, André ; Schmid, Bernhard

In: Global Change Biology, 2007, vol. 13, no. 5, p. 1028-1039

Increasing concentrations of CO₂ in the atmosphere are likely to affect the ecological dynamics of plant populations and communities worldwide, yet little is known about potential evolutionary consequences of high CO₂. We employed a quantitative genetic framework to examine how the expression of genetic variation and covariation in fitness-related traits, and thus, the evolutionary potential...