Abstracts (first author)
Reinforcement (and other modes of speciation)
Author(s): Butlin RK
Reinforcement is often considered special among modes of speciation because natural selection favours the build-up of barriers to gene flow: reproductive isolation is not just an incidental consequence of divergence, it is a device to prevent maladaptive hybridization. The idea is controversial partly because the term ‘reinforcement’ is used in various different ways. More importantly, reinforcement is hard to demonstrate and so it remains uncertain how much it contributes to speciation. Like other processes, it is only ever part of the speciation story. I will discuss the role of reinforcement is association with various other elements of speciation, using evidence from some of my favourite organisms.