All Outputs (25)

Disruptive sexual selection on male nuptial coloration in an experimental hybrid population of cichlid fish (2008)
Journal Article
Stelkens, R. B., Pierotti, M. E., Joyce, D. A., Smith, A. M., van der Sluijs, I., & Seehausen, O. (2008). Disruptive sexual selection on male nuptial coloration in an experimental hybrid population of cichlid fish. Philosophical Transactions B: Biological Sciences, 363(1505), https://doi.org/10.1098/rstb.2008.0049

Theory suggests that genetic polymorphisms in female mating preferences may cause disruptive selection on male traits, facilitating phenotypic differentiation despite gene flow, as in reinforcement or other models of speciation with gene flow. Very l... Read More about Disruptive sexual selection on male nuptial coloration in an experimental hybrid population of cichlid fish.

Individual variation in male mating preferences for female coloration in a polymorphic cichlid fish (2008)
Journal Article
Pierotti, M. E., Knight, M. E., Immler, S., Barson, N. J., Turner, G. F., & Seehausen, O. (2008). Individual variation in male mating preferences for female coloration in a polymorphic cichlid fish. Behavioral Ecology, 19(3), 483–488. https://doi.org/10.1093/beheco/arm154

Female color polymorphisms are common in the cichlid species radiations of Lake Victoria and Lake Malawi. According to theory, when a population harbors variation in sex-determining factors, polymorphism in female-linked coloration might generate ind... Read More about Individual variation in male mating preferences for female coloration in a polymorphic cichlid fish.

Male mating preferences pre-date the origin of a female trait polymorphism in an incipient species complex of Lake Victoria cichlids (2006)
Journal Article
Pierotti, M. E., & Seehausen, O. (2007). Male mating preferences pre-date the origin of a female trait polymorphism in an incipient species complex of Lake Victoria cichlids. Journal of Evolutionary Biology, 20(1), 240-248. https://doi.org/10.1111/j.1420-9101.2006.01206.x

Disruptive sexual selection on colour patterns has been suggested as a major cause of diversification in the cichlid species flock of Lake Victoria. In Neochromis omnicaeruleus, a colour and sex determination polymorphism is associated with a polymor... Read More about Male mating preferences pre-date the origin of a female trait polymorphism in an incipient species complex of Lake Victoria cichlids.

Male-male competition and speciation: Aggression bias towards differently coloured rivals varies between stages of speciation in a Lake Victoria cichlid species complex (2006)
Journal Article
Dijkstra, P. D., Seehausen, O., Pierotti, M. E., & Groothuis, T. G. (2007). Male-male competition and speciation: Aggression bias towards differently coloured rivals varies between stages of speciation in a Lake Victoria cichlid species complex. Journal of Evolutionary Biology, 20(2), 496-502. https://doi.org/10.1111/j.1420-9101.2006.01266.x

Sympatric speciation driven by sexual selection by female mate choice on a male trait is a much debated topic. The process is problematic because of the lack of negative frequency-dependent selection that can facilitate the invasion of a novel colour... Read More about Male-male competition and speciation: Aggression bias towards differently coloured rivals varies between stages of speciation in a Lake Victoria cichlid species complex.

Male mating behavior and ejaculate expenditure under sperm competition risk in the eastern mosquitofish (2003)
Journal Article
Evans, J. P., Pierotti, M., & Pilastro, A. (2003). Male mating behavior and ejaculate expenditure under sperm competition risk in the eastern mosquitofish. Behavioral Ecology, 14(2), 268–273. https://doi.org/10.1093/beheco/14.2.268

Theory predicts that males should tailor the size of their ejaculates according to temporal changes in the risk of sperm competition. Specifically, males are predicted to allocate more sperm to each mating event with increasing risk (i.e., the probab... Read More about Male mating behavior and ejaculate expenditure under sperm competition risk in the eastern mosquitofish.