march, 2017

14mar1:00 pm2:00 pmExperimental evolution of sex roles: sexy females and generous malesDr Karoline Fritzsche

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Event Details

 

Abstract

Sexual selection is the prime evolutionary force that makes males and females different. Sexual selection theory has recently expanded to include mate competition between females and mate choice by males, but empirical studies addressing these themes are still scarce. My research explores the evolution of sex role reversed mating systems using honey locust beetles (Megabruchidius sp.). I will present experimental evidence showing that (i) multiple mating can be costly for males and beneficial for females, (ii) males are choosy and (iii) female‑biased sex ratios accelerated the evolution of female courtship, which even led to stronger sex role reversal (experimental evolution over 20 generations). I highlight the essential role that females play in mating system evolution and that their contribution cannot simply be reduced to mate choice.

If you would like to meet with Karoline please contact Mike Ritchie.

Karoline Fritzsche’s website

Time

(Tuesday) 1:00 pm - 2:00 pm

Location

Dyer's Brae Seminar Room

Dyers Brae, School of Biology, University of St Andrews, St Andrews, Greenside Place, Fife, KY16 9TH, UK

Organizer

Ellen Garland & Christian Rutzecg5@st-andrews.ac.uk, cr68@st-andrews.ac.uk Dyers Brae, University of St Andrews, St Andrews, Fife, KY16 9TH, UK

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