Warning Signal Brightness Variation: Sexual Selection May Work Under The Radar Of Natural Selection In Populations Of A Polytypic Poison Frog

dc.contributor.utaustinauthorCrothers, Laura R.en
dc.contributor.utaustinauthorCummings, Molly E.en
dc.creatorCrothers, Laura R.en
dc.creatorCummings, Molly E.en
dc.date.accessioned2015-09-09T15:50:39Zen
dc.date.available2015-09-09T15:50:39Zen
dc.date.issued2013-05en
dc.description.abstractThough theory predicts consistency of warning signals in aposematic species to facilitate predator learning, variation in these signals often occurs in nature. The strawberry poison frog Dendrobates pumilio is an exceptionally polytypic (populations are phenotypically distinct) aposematic frog exhibiting variation in warning color and brightness. In the Solarte population, males and females both respond differentially to male brightness variation. Here, we demonstrate through spectrophotometry and visual modeling that aposematic brightness variation within this population is likely visible to two putative predators (crabs, snakes) and conspecifics but not to the presumed major predator (birds). This study thus suggests that signal brightness within D. pumilio populations can be shaped by sexual selection, with limited opportunity for natural selection to influence this trait due to predator sensory constraints. Because signal brightness changes can ultimately lead to changes in hue, our findings at the within-population level can provide insights into understanding this polytypism at across-population scales.en
dc.description.departmentIntegrative Biologyen
dc.description.sponsorshipen
dc.identifier.citationLaura R. Crothers, Molly E. Cummings. Warning Signal Brightness Variation: Sexual Selection May Work Under The Radar Of Natural Selection In Populations Of A Polytypic Poison Frog. The American Naturalist, Vol. 181, No. 5 (May., 2013), pp. E116-E124. DOI: 10.1086/670010en
dc.identifier.doi10.1086/670010en
dc.identifier.issn0003-0147en
dc.identifier.urihttp://hdl.handle.net/2152/31114en
dc.identifier.urlen
dc.language.isoEnglishen
dc.relation.ispartofserialAmerican Naturalisten
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en
dc.rights.holderen
dc.subjectvisual modelen
dc.subjectaposematismen
dc.subjectbrightnessen
dc.subjectconspicuousnessen
dc.subjectpredationen
dc.subjectvariationen
dc.subjectdendrobates-pumilioen
dc.subjectspectral sensitivityen
dc.subjectaposematic signalsen
dc.subjectreceptoren
dc.subjectnoiseen
dc.subjectbackground coloren
dc.subjectvisual ecologyen
dc.subjectpredation risken
dc.subjecthonest signalsen
dc.subjectoil dropletsen
dc.subjectsystemen
dc.subjectecologyen
dc.subjectevolutionary biologyen
dc.titleWarning Signal Brightness Variation: Sexual Selection May Work Under The Radar Of Natural Selection In Populations Of A Polytypic Poison Frogen
dc.typeArticleen

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