Paul Schmidt, "Seasonality and adaptation in Drosophila"
Oct 29, 2012 (Mon) | 4:00 PM -6:00 PM
393 Serra Mall, Herrin T-175 : Stanford, CA
Abstract: Many organisms occupy environments that vary spatially and/or temporally; establishing the mechanisms of adaptation to environmental heterogeneity remains a central issue in evolutionary biology. Drosophila melanogaster is a tropical species that has in the relatively recent past colonized novel temperate environments on multiple continents. Overwintering survivorship is associated with the expression of reproductive dormancy or diapause, a genetically based, physiological syndrome that provides population continuity across seasons. I will describe our work on the adaptive dynamics of diapause in natural D. melanogaster populations, the genetic architecture of this fitness trait, and how it may underlie evolutionary dynamics over various temporal and spatial scales.
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