Explain how sensory drive and sexual selection can drive speciation in cichlids living in Lake Victoria.

Expert Solution

The role of selection is a poorly understood problem in evolutionary biology. The rapid radiations of colorful cichlids fish in African lakes have fueled the hypothesis that sexual selection can drive species divergence without gepgraphical isolation.The sexual selection becomes divergent into two sibling species from Lake Victoria ,female mating preferences for red and blue male nuptial colouration coincide with the context independent sensitivities to red and blue light, which in turn corresponds to a difference in ambient light in natural habitat of species. These results suggest that natural selection on visual performance,favouring different environmental spectrals,may lead divergent in sexual selection on male nuptial colouration along a light gradient which may provide a mechanism of rapid speciation through divergent sensory drive.

gladiator answered 2 years ago

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