Prof Ingo Schlupp
University of Oklahoma
Host - Dr Rudiger Riesch
Behaviour and Ecology of the Amazon molly
Livebearing fishes are model organisms for many questions in ecology, evolution, and behaviour. One of the most intriguing questions in evolutionary biology remains why meiosis and recombination (or sex) are almost universal. Theory predicts that asexuality should prevail, but in reality this is not the case. My group is using a comparative approach to assess the costs and benefits of sex. Specifically, we use the unisexual Amazon molly as model system. This species is ameiotic and clonal, and could realize the full advantage of being asexual, yet relies on sperm from males of a different species to trigger embryogenesis. In my talk I will first explore this unique fish species, but then use this to explore more general topics that have to do with mate choice and sexual selection in general.