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Sexual selection on wing interference patterns in Drosophila melanogaster

Katayama, Natsu ; Abbott, Jessica K. ; Kjærandsen, Jostein ; Takahashi, Yuma ; Svensson, Erik I.

Proceedings of the National Academy of Sciences - PNAS, 2014-10, Vol.111 (42), p.15144-15148 [Periódico revisado por pares]

United States: National Academy of Sciences

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  • Título:
    Sexual selection on wing interference patterns in Drosophila melanogaster
  • Autor: Katayama, Natsu ; Abbott, Jessica K. ; Kjærandsen, Jostein ; Takahashi, Yuma ; Svensson, Erik I.
  • Assuntos: Animal communication ; Animal reproduction ; Animal wings ; Animals ; Biologi ; Biological Sciences ; Color ; Colors ; Drosophila ; Drosophila melanogaster ; Drosophila melanogaster - genetics ; Evolution ; Evolutionary genetics ; Female ; Hymenoptera ; Insect genetics ; Insects ; Light ; Male ; Male animals ; Matematikk og Naturvitenskap: 400 ; Mathematics and natural science: 400 ; Mating behavior ; Natural Sciences ; Naturvetenskap ; Phenotype ; Phenotypic traits ; Pigmentation ; Regression Analysis ; Selection, Genetic ; Sexual Behavior, Animal ; Sexual selection ; Signal Transduction ; VDP ; Wings, Animal - physiology ; Zoologiske og botaniske fag: 480 ; Zoology and botany: 480
  • É parte de: Proceedings of the National Academy of Sciences - PNAS, 2014-10, Vol.111 (42), p.15144-15148
  • Notas: http://dx.doi.org/10.1073/pnas.1407595111
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    Author contributions: N.K., J.K.A., J.K., Y.T., and E.I.S. designed research; N.K., J.K.A., J.K., Y.T., and E.I.S. performed research; N.K., J.K.A., and Y.T. analyzed data; and N.K., J.K.A., J.K., Y.T., and E.I.S. wrote the paper.
    Edited by Sean B. Carroll, University of Wisconsin–Madison, Madison, WI, and approved August 22, 2014 (received for review April 25, 2014)
  • Descrição: Animals with color vision use color information in intra- and interspecific communication, which in turn may drive the evolution of conspicuous colored body traits via natural and sexual selection. A recent study found that the transparent wings of small flies and wasps in lower-reflectance light environments display vivid and stable structural color patterns, called “wing interference patterns” (WIPs). Such WIPs were hypothesized to function in sexual selection among small insects with wing displays, but this has not been experimentally verified. Here, to our knowledge we present the first experimental evidence that WIPs in males of Drosophila melanogaster are targets of mate choice from females, and that two different color traits—saturation and hue—experience directional and stabilizing sexual selection, respectively. Using isogenic lines from the D. melanogaster Genetic Reference Panel, we compare attractiveness of different male WIPs against black and white visual backgrounds. We show that males with more vivid wings are more attractive to females than are males with dull wings. Wings with a large magenta area (i.e., intermediate trait values) were also preferred over those with a large blue or yellow area. These experimental results add a visual element to the Drosophila mating array, integrating sexual selection with elements of genetics and evo-devo, potentially applicable to a wide array of small insects with hyaline wings. Our results further underscore that the mode of sexual selection on such visual signals can differ profoundly between different color components, in this case hue and saturation. Significance Recently, it was discovered that small insects like flies and wasps, with seemingly transparent wings, display vivid coloration against dark backgrounds because of so-called “wing interference patterns” (WIPs). It was proposed that such wing coloration could function in sexual selection and species recognition, but direct evidence for this hypothesis has been lacking. Here, to our knowledge we present the first experimental evidence that WIPs in male Drosophila melanogaster are targets of mate choice from females. Comparison of attractiveness of different male WIPs between black and white backgrounds revealed that two different color traits, saturation and hue, experience directional and stabilizing sexual selection, respectively. Our results suggest that vivid coloration in WIPs is a target of mate choice and might have evolved by sexual selection.
  • Editor: United States: National Academy of Sciences
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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