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    Phenotypic and Genetic Divergence among Poison Frog Populations in a Mimetic Radiation

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    Author
    Twomey, Evan; Yeager, Justin; Brown, Jason Lee; Morales, Victor; Cummings, Molly; Summers, Kyle
    Abstract
    The evolution of Müllerian mimicry is, paradoxically, associated with high levels of diversity in color and pattern. In a mimetic radiation, different populations of a species evolve to resemble different models, which can lead to speciation. Yet there are circumstances under which initial selection for divergence under mimicry may be reversed. Here we provide evidence for the evolution of extensive phenotypic divergence in a mimetic radiation in Ranitomeya imitator, the mimic poison frog, in Peru. Analyses of color hue (spectral reflectance) and pattern reveal substantial divergence between morphs. However, we also report that there is a “transition-zone” with mixed phenotypes. Analyses of genetic structure using microsatellite variation reveals some differentiation between populations, but this does not strictly correspond to color pattern divergence. Analyses of gene flow between populations suggest that, while historical levels of gene flow were low, recent levels are high in some cases, including substantial gene flow between some color pattern morphs. We discuss possible explanations for these observations.
    URI
    http://hdl.handle.net/10342/5462
    Subject
     Phenotypes; Speciation; Population density; Population genetics; Frogs 
    Date
    2013
    Citation:
    APA:
    Twomey, Evan, & Yeager, Justin, & Brown, Jason Lee, & Morales, Victor, & Cummings, Molly, & Summers, Kyle. (January 2013). Phenotypic and Genetic Divergence among Poison Frog Populations in a Mimetic Radiation. PLoS ONE, (8:2), p.1-10. Retrieved from http://hdl.handle.net/10342/5462

    Display/Hide MLA, Chicago and APA citation formats.

    MLA:
    Twomey, Evan, and Yeager, Justin, and Brown, Jason Lee, and Morales, Victor, and Cummings, Molly, and Summers, Kyle. "Phenotypic and Genetic Divergence among Poison Frog Populations in a Mimetic Radiation". PLoS ONE. 8:2. (1-10.), January 2013. April 20, 2021. http://hdl.handle.net/10342/5462.
    Chicago:
    Twomey, Evan and Yeager, Justin and Brown, Jason Lee and Morales, Victor and Cummings, Molly and Summers, Kyle, "Phenotypic and Genetic Divergence among Poison Frog Populations in a Mimetic Radiation," PLoS ONE 8, no. 2 (January 2013), http://hdl.handle.net/10342/5462 (accessed April 20, 2021).
    AMA:
    Twomey, Evan, Yeager, Justin, Brown, Jason Lee, Morales, Victor, Cummings, Molly, Summers, Kyle. Phenotypic and Genetic Divergence among Poison Frog Populations in a Mimetic Radiation. PLoS ONE. January 2013; 8(2) 1-10. http://hdl.handle.net/10342/5462. Accessed April 20, 2021.
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