The ecological stage maintains preference differentiation and promotes speciation

Boughman, Janette W.,1957-Department of Integrative Biology; Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, Michigan, USA. (författare)

Båda författarna delar förstaförfattarskapet.
Influential models of speciation by sexual selection posit either a single sharedpreference for a universal display, expressed only when males are locally adaptedand hence in high condition, or that shared loci evolve population-specificallelesfor displays and preferences. However, many closely related species instead showsubstantial differences across categorically different traits. We present a modelof secondary contact whereby females maintain preferences for distinct displaysthat indicate both male condition and their match to distinct environments, fosteringreproductive isolation among diverging species. This occurs even with searchcosts and with independent preference loci targeting independent displays. Suchpreferences can also evolve from standing variation. Divergence occurs becausecondition-dependentdisplay and female preference depend on local ecology, andfemales obtain different benefits of choice. Given the ubiquity of ecological differencesamong environments, our model could help explain the evolution of strikingradiations of displays seen in nature.

Servedio, Maria R.,1971-Department of Biology, University of North Carolina, Chapel Hill, North Carolina, USA. (författare)
Department of Integrative Biology; Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, Michigan, USA.Department of Biology, University of North Carolina, Chapel Hill, North Carolina, USA. (creator_code:org_t)

Ingår i:Ecology LettersHoboken, New Jersey : John Wiley & Sons25:4, s. 926-9381461-023X1461-0248

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