Using Spectral Data To Reconstruct Evolutionary Changes In Coloration: Carotenoid Color Evolution In New World Orioles

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dc.contributor.authorHofmann, Christopher M.
dc.contributor.authorCronin, Thomas W.
dc.contributor.authorOmland, Kevin E.
dc.date.accessioned2019-04-19T17:36:42Z
dc.date.available2019-04-19T17:36:42Z
dc.date.issued2007-05-08
dc.description.abstractCarotenoid‐based colors are thought to play an important signaling role in many animal taxa. However, little is known about evolutionary changes in carotenoid coloration, especially among closely related species. We used a phylogenetic perspective to examine carotenoid color changes within New World orioles (genus Icterus). Oriole color was quantitatively measured using reflectance spectrometry. We found continuous variation from short‐ to long‐wavelength carotenoid colors in extant orioles–perceived by humans as ranging from yellow to scarlet–suggesting that these carotenoid‐based colors have evolved as a continuous character. Ancestral state reconstruction suggests that short‐ and long‐wavelength carotenoid colors have evolved independently multiple times, likely from a middle‐wavelength ancestor. Although color showed considerable lability, we found a significant amount of phylogenetic signal across the entire genus. This implies that while labile, the colors of closely related taxa tended to resemble each other more than would be expected due to chance. To our knowledge, this is the first study to use quantitative character states derived from reflectance spectra in ancestral state reconstruction. Reflectance spectra provide an unbiased quantitative description of color that allowed us to detect subtle changes among closely related taxa. Using these quantitative methods to score and reconstruct color changes among closely related taxa provides a better understanding of how elaborate animal colors evolve.en_US
dc.description.sponsorshipThis research was supported in part by National Science Foundation grants to K. Omland (DEB-0347083) and T. Cronin (IBN-0235820). The Omland Laboratory is a participant in the Smithsonian Ornithology group.en_US
dc.description.urihttps://onlinelibrary.wiley.com/doi/abs/10.1111/j.0014-3820.2006.tb00512.xen_US
dc.format.extent12 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2qgfp-u8l8
dc.identifier.citationChristopher M. Hofmann , Thomas W. Cronin, Kevin E. Omland, Using Spectral Data To Reconstruct Evolutionary Changes In Coloration: Carotenoid Color Evolution In New World Orioles, 2007, Evolution International Journal of Organic Evolution, https://doi.org/10.1111/j.0014-3820.2006.tb00512.xen_US
dc.identifier.urihttps://doi.org/10.1111/j.0014-3820.2006.tb00512.x
dc.identifier.urihttp://hdl.handle.net/11603/13472
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Biological Sciences Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.subjectancestral state reconstructionen_US
dc.subjectcarotenoiden_US
dc.subjectcoloren_US
dc.subjectconstrainten_US
dc.subjectcontinuous characteren_US
dc.subjectevolutionen_US
dc.subjectlabilityen_US
dc.titleUsing Spectral Data To Reconstruct Evolutionary Changes In Coloration: Carotenoid Color Evolution In New World Oriolesen_US
dc.typeTexten_US

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