Metapopulation structure modulates sexual antagonism

Abstract Despite the far-reaching evolutionary implications of sexual conflict, effects metapopulation structure, when populations are subdivided into several demes connected to some degree by migration, on conflict dynamics unknown. Here, we used experimental evolution in an insect model system, seed beetle Callosobruchus maculatus, assess independent and interacting selection histories associated with mating system (monogamy vs. polygamy) population subdivision evolution. We confirm traditional predictions from theory revealing increased resistance male harm females a history intense (polygamous populations) compared relaxed (monogamous populations). However, arising structure reversed classic pattern sexually antagonistic coevolution led reduced polygamous populations. These results underscore that spatial moderates more broadly, is contingent ecological context. The findings also have for dynamics, conservation biology, biological control.