Female, but Not Male, Tropical Sparrows Respond More Strongly to the Local Song Dialect: Implications for Population Divergence

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dc.contributor.authorDanner, J. E.en
dc.contributor.authorDanner, R. M.en
dc.contributor.authorBonier, F.en
dc.contributor.authorMartin, P. R.en
dc.contributor.authorSmall, T. W.en
dc.contributor.authorMoore, Ignacio T.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessed2014-06-26en
dc.date.accessioned2014-06-27T14:45:36Zen
dc.date.available2014-06-27T14:45:36Zen
dc.date.issued2011-07en
dc.description.abstractIn addition to the observed high diversity of species in the tropics, divergence among populations of the same species exists over short geographic distances in both phenotypic traits and neutral genetic markers. Divergence among populations suggests great potential for the evolution of reproductive isolation and eventual speciation. In birds, song can evolve quickly through cultural transmission and result in regional dialects, which can be a critical component of reproductive isolation through variation in female preference. We examined female and male behavioral responses to local and nonlocal dialects in two allopatric populations of rufous-collared sparrows (Zonotrichia capensis) in the Andes Mountains of Ecuador. Here we show that female sparrows prefer their natal song dialect to the dialect of an allopatric population that is just 25 km away and separated by an unsuitable higher-elevation habitat (pass of 4,200 m), thus providing evidence of prezygotic reproductive isolation among populations. Males showed similar territorial responses to all conspecific dialects with no consistent difference with respect to distance, making male territoriality uninformative for estimating reproductive isolation. This study provides novel evidence for culturally based prezygotic isolation over very short distances in a tropical bird.en
dc.description.sponsorshipSigma Xien
dc.description.sponsorshipVirginia Techen
dc.description.sponsorshipNational Science Foundation (NSF) OISE-0700651, OISE-0602084, IOS-0545735en
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canadaen
dc.description.sponsorshipBaillie Family Endowmenten
dc.identifier.citationJulie E. Danner, Raymond M. Danner, Frances Bonier, Paul R. Martin, Thomas W. Small, and Ignacio T. Moore. "Female, but Not Male, Tropical Sparrows Respond More Strongly to the Local Song Dialect: Implications for Population Divergence," The American Naturalist, Vol. 178, No. 1 (July 2011), pp. 53-63. DOI: 10.1086/660283en
dc.identifier.doihttps://doi.org/10.1086/660283en
dc.identifier.issn0003-0147en
dc.identifier.urihttp://hdl.handle.net/10919/49123en
dc.identifier.urlhttp://www.jstor.org/stable/10.1086/660283en
dc.language.isoen_USen
dc.publisherUniversity of Chicago Pressen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectreproductive isolationen
dc.subjecttropicsen
dc.subjectfemale choiceen
dc.subjectsong dialectsen
dc.subjectzonotrichia capensisen
dc.subjectwhite-crowned sparrowsen
dc.subjectrufous-collared sparrowen
dc.subjectzonotrichia-capensisen
dc.subjectspecies recognitionen
dc.subjectlatitudinal variationen
dc.subjectgeographic-variationen
dc.subjectvocalen
dc.subjectdialectsen
dc.subjectbird songen
dc.subjecthistorical diversificationen
dc.subjectcharacter displacementen
dc.subjectecologyen
dc.subjectevolutionary biologyen
dc.titleFemale, but Not Male, Tropical Sparrows Respond More Strongly to the Local Song Dialect: Implications for Population Divergenceen
dc.title.serialAmerican Naturalisten
dc.typeArticle - Refereeden

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