April 23rd, Joachim Hermisson: The genetic basis of phenotypic adaptation: Adaptation to a moving optimum

Joachim Hermisson will speak on the 23rd of april about  adaptation to a moving optimum.

Joachim Hermisson will speak on the 23rd of april about adaptation to a moving optimum.

Joachim studied Physics and Philosophy and did a PhD on Quantum Phase Transitions before he switched to model Real Life. He worked with Günter Wagner at Yale and started his own junior research group in Munich in 2002. In October 2007, he started his position as a Professor of Mathematics and Biosciences at the University of Vienna. Joachim’s work is on theoretical population genetics where he combines molecular and phenotypic approaches. His most recent work focusses on the conditions for adaptation in variable environments and on models of speciation with gene flow. Joachim’s website.

Talk: The genetic basis of phenotypic adaptation:
Adaptation to a moving optimum

Does adaptive evolution proceed in many small steps or in fewer, but larger steps? The distribution of adaptive step sizes has been a
contentious issue in evolutionary research since it early days. On the theoretical side, models by Fisher, Gillespie, and Orr have shaped our intuition has to what we should be expect for a single adaptive bout. However, all these models assume that adaptation responds to a single, sudden shift in the environment. In my talk, I’ll consider the opposite case, where a phenotypic trait follows a gradually moving optimum. I’ll summarize some older and very recent results and discuss how our intuition about adaptive step sizes under these conditions should differ.

[Joint work with Michael Kopp and Sebastian Matuszewski]

Seminar details

Wednesday April 23rd, 2014
1:15 PM Seminar (no lunch)
Location: Clark Auditorium

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