No evidence for selection in a pheromonally polymorphic moth population

Given the interesting situation with a pheromonally mixed population and the high quality of the data collected by Klun and Huettel, we have performed a more complete analysis of their data set. We show that it can be used for a partial fitness-component analysis in which different parts of selection are studied separately. In contrast to the claim of Klun and Huettel, the result of our analysis is that there is no evidence for selection at the pheromone-production locus. Our analysis also shows how genetic studies of assortative mating and sexual selection can be performed with great precision in natural populations of Ostrinia nubilalis .