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Sexual Dichromatism Drives Diversification within a Major Radiation of African Amphibians

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dc.contributor.author Portik, Daniel en
dc.contributor.author Bell, Rayna en
dc.contributor.author Blackburn, David en
dc.contributor.author Bauer, Aaron en
dc.contributor.author Barratt, Christopher en
dc.contributor.author Branch, William en
dc.contributor.author Burger, Marius en
dc.contributor.author Channing, Alan en
dc.contributor.author Colston, Timothy en
dc.contributor.author Conradie, Werner en
dc.contributor.author Dehling, J. en
dc.contributor.author Drewes, Robert en
dc.contributor.author Ernst, Raffael en
dc.contributor.author Greenbaum, Eli en
dc.contributor.author Gvozdik, Vaclav en
dc.contributor.author Harvey, James en
dc.contributor.author Hillers, Annika en
dc.contributor.author Hirschfeld, Mareike en
dc.contributor.author Jongsma, Gregory en
dc.contributor.author Kielgast, Jos en
dc.contributor.author Kouete, Marcel en
dc.contributor.author Lawson, Lucinda en
dc.contributor.author Leache, Adam en
dc.contributor.author Loader, Simon en
dc.contributor.author Loetters, Stefan en
dc.contributor.author Van Der Meijden, Arie en
dc.contributor.author Menegon, Michele en
dc.contributor.author Mueller, Susanne en
dc.contributor.author Nagy, Zoltan en
dc.contributor.author Ofori-Boateng, Caleb en
dc.contributor.author Ohler, Annemarie en
dc.contributor.author Papenfuss, Theodore en
dc.contributor.author Roessler, Daniela en
dc.contributor.author Sinsch, Ulrich en
dc.contributor.author Roedel, Mark-Oliver en
dc.contributor.author Veith, Michael en
dc.contributor.author Vindum, Jens en
dc.contributor.author Zassi-Boulou, Ange-Ghislain en
dc.contributor.author McGuire, Jimmy en
dc.date.accessioned 2019-12-20T03:00:16Z
dc.date.available 2019-12-20T03:00:16Z
dc.date.issued 2019
dc.identifier.citation Portik, Daniel, Bell, Rayna, Blackburn, David, Bauer, Aaron, Barratt, Christopher, Branch, William, Burger, Marius, Channing, Alan, Colston, Timothy, Conradie, Werner, Dehling, J., Drewes, Robert, Ernst, Raffael, Greenbaum, Eli, Gvozdik, Vaclav, Harvey, James, Hillers, Annika, Hirschfeld, Mareike, Jongsma, Gregory, Kielgast, Jos, Kouete, Marcel, Lawson, Lucinda, Leache, Adam, Loader, Simon, Loetters, Stefan et al. 2019. "Sexual Dichromatism Drives Diversification within a Major Radiation of African Amphibians." <em>Systematic Biology</em>. 68 (6):859&ndash;875. <a href="https://doi.org/10.1093/sysbio/syz023">https://doi.org/10.1093/sysbio/syz023</a> en
dc.identifier.issn 1063-5157
dc.identifier.uri https://hdl.handle.net/10088/101220
dc.description.abstract Theory predicts that sexually dimorphic traits under strong sexual selection, particularly those involved with intersexual signaling, can accelerate speciation and produce bursts of diversification. Sexual dichromatism (sexual dimorphism in color) is widely used as a proxy for sexual selection and is associated with rapid diversification in several animal groups, yet studies using phylogenetic comparative methods to explicitly test for an association between sexual dichromatism and diversification have produced conflicting results. Sexual dichromatism is rare in frogs, but it is both striking and prevalent in African reed frogs, a major component of the diverse frog radiation termed Afrobatrachia. In contrast to most other vertebrates, reed frogs display female-biased dichromatism in which females undergo color transformation, often resulting in more ornate coloration in females than in males. We produce a robust phylogeny of Afrobatrachia to investigate the evolutionary origins of sexual dichromatism in this radiation and examine whether the presence of dichromatism is associated with increased rates of net diversification. We find that sexual dichromatism evolved once within hyperoliids and was followed by numerous independent reversals to monochromatism. We detect significant diversification rate heterogeneity in Afrobatrachia and find that sexually dichromatic lineages have double the average net diversification rate of monochromatic lineages. By conducting trait simulations on our empirical phylogeny, we demonstrate that our inference of trait-dependent diversification is robust. Although sexual dichromatism in hyperoliid frogs is linked to their rapid diversification and supports macroevolutionary predictions of speciation by sexual selection, the function of dichromatism in reed frogs remains unclear. We propose that reed frogs are a compelling system for studying the roles of natural and sexual selection on the evolution of sexual dichromatism across micro- and macroevolutionary timescales. en
dc.relation.ispartof Systematic Biology en
dc.title Sexual Dichromatism Drives Diversification within a Major Radiation of African Amphibians en
dc.type Journal Article en
dc.identifier.srbnumber 153624
dc.identifier.doi 10.1093/sysbio/syz023
rft.jtitle Systematic Biology
rft.volume 68
rft.issue 6
rft.spage 859
rft.epage 875
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Vertebrate Zoology en
dc.citation.spage 859
dc.citation.epage 875


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