Sympatric speciation and extinction driven by environment dependent sexual selection

G.S. van Doorn, A.J. Noest, P. Hogeweg

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    Abstract

    A theoretical model is studied to investigate the possibility of sympatric speciation driven by sexual selection and ecological diversification. In particular, we focus on the rock-dwelling haplochromine cichlid species in Lake Victoria. The high speciation rate in these cichlids has been explained by their apparent ability to specialize rapidly to a large diversity of feeding niches. Seehausen and colleagues, however, demonstrated the importance of sex;al selection in maintaining reproductive barriers between species. Our individual-orientated model integrates both niche differentiation and a Fisherian runaway process, which is limited by visibility constraints. The model shows rapid sympatric speciation or extinction of species, depending on the strength of sexual selection
    Original languageEnglish
    Pages (from-to)1915 - 1919
    Number of pages5
    JournalProceedings of the Royal Society of London. Series B, Biological Sciences
    Volume265
    Issue number1408
    Publication statusPublished - 1998

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