Evolution of Premating Barriers in Interspecific Contacts: Quantitative Genetic Modeling

Interspecific mating may cause the loss of female fertility, often resulting in the extinction of the species. Presumably females evolve mate preference to avoid heterospecific mating, a kind of reproductive interference. We analyze this process based on a quantitative genetic model, which explains why reproductive character displacement of male between species occurs when they are sympatric or parapatric more than when they are allopatric. This process can be regarded as that different taxa reach more specific.