Does reproductive isolation evolve faster in larger populations via sexually antagonistic coevolution

摘要: Sexual conflict over reproductive investment can lead to sexually antagonistic coevolution and isolation. It has been suggested that, unlike most models of allopatric speciation, the evolution isolation through will occur faster in large populations as these harbour greater levels standing genetic variation, receive larger numbers mutations experience more intense sexual selection. We tested this bruchid beetle (Callosobruchus maculatus) by manipulating population size variability replicated lines derived from founders that had released for 90 generations. found after 19 generations reintroduced conflict, none our treatments evolved significant overall among replicate lines. However, predicted, measures tended be populations. discuss methodology, arguing is best examined performing a matrix sympatric crosses whereas measurement divergence requires with tester line.