Fig. 1
From: Coevolution of male and female mate choice can destabilize reproductive isolation
Selective forces acting on female and male choosiness. Choosiness can only evolve in one sex (a, b) or can evolve in both sexes (c). Diamond arrows and classic arrows represent viability and sexual selection, respectively. Viability selection acts through differential survival (i.e., change in frequencies during the disruptive viability selection process), whereas sexual selection acts through differential male mating success (detailed in Supplementary Fig. 1). Bold and dashed arrows represent direct and indirect selection, respectively. AA and aa refer to homozygotes at the ecological locus and MM to choosy males. Selective forces represented with a low opacity in panel c are the ones already shown in panels a and b
