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Habitat structure drives the evolution of aerial displays in birds

Menezes, João Carnio Teles De

Biblioteca Digital de Teses e Dissertações da USP; Universidade de São Paulo; Instituto de Biociências 2019-02-22

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  • Título:
    Habitat structure drives the evolution of aerial displays in birds
  • Autor: Menezes, João Carnio Teles De
  • Orientador: Queiroz, Rafael Maia Villar de; Santos, Eduardo da Silva Alves dos
  • Assuntos: Análise Filogenética Comparativa; Seleção Sexual; Passeriformes; Sinal Motor; Macroevolução; Favorecimento Sensorial; Display De Corte; Comunicação Animal; Gestural Signal; Sexual Selection; Sensory Drive; Animal Communication; Phylogenetic Comparative Analysis; Courtship Display; Macroevolution
  • Notas: Dissertação (Mestrado)
  • Descrição: Physical properties of the environment may shape signalling traits by determining how effective signals are in influencing the behaviour of other individuals. Evidence abounds of signalling environment driving the evolution of colours and sounds, yet little is known about its influence upon gestural displays. Here, we performed a continent-wide phylogenetic comparative analysis to test the hypothesis that habitat structure drives the evolution of aerial sexual displays in passerine birds. We found that aerial displays are seven times more likely to evolve in open-habitat passerines than in forest ones, likely as a result of physical properties that allow aerial displays to transmit more broadly in open habitats. Our results provide an emblematic example of how environmental factors may help predict the direction of evolution of otherwise unpredictable sexual traits. The broader range of aerial displays in open habitats may also mean that females can sample more males, potentially leading to more intense sexual selection in open-habitat, aerial-displaying males
  • DOI: 10.11606/D.41.2019.tde-07052019-154036
  • Editor: Biblioteca Digital de Teses e Dissertações da USP; Universidade de São Paulo; Instituto de Biociências
  • Data de criação/publicação: 2019-02-22
  • Formato: Adobe PDF
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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