Item

ITEM ACTIONS

This item is discarded!DetailsSummary

Discarded

Journal Article

Sex-specific spatio-temporal variability in reproductive success promotes the evolution of sex-biased dispersal

MPS-Authors

Gros, Andreas
Max Planck Digital Library, Max Planck Society;

External Resource

(No access)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

(No access)

Supplementary Material (public)

There is no public supplementary material available

Citation

Gros, A., Poethke, H. J., & Hovestadt, T. (2009). Sex-specific spatio-temporal variability in reproductive success promotes the evolution of sex-biased dispersal. Theoretical Population Biology, 76, 13-18. doi:10.1016/j.tpb.2009.03.002.

Abstract

Inbreeding depression, asymmetries in costs or benefits of dispersal, and the mating system have been identified as potential factors underlying the evolution of sex- biased dispersal. We use individual-based simulations to explore how the mating system and demographic stochasticity influence the evolution of sex-specific dispersal in a metapopulation with females competing over breeding sites, and males over mating opportunities. Comparison of simulation results for random mating with those for a harem system (locally, a single male sires all offspring) reveal that even extreme variance in local male reproductive success (extreme male competition) does not induce male-biased dispersal. The latter evolves if between-patch variance in reproductive success is larger for males than females. This can emerge due to demographic stochasticity if habitat patches are small. More generally, members of a group of individuals experiencing higher spatio-temporal variance in fitness expectations may evolve to disperse with greater probability than others.