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The importance of novelty: male-female interactions among blue-black grassquits in captivity

Dias, Raphael I ; Oliveira, Rui F ; Podos, Jeffrey ; Macedo, Regina H

Behavioural processes, March 2014, Vol.103, pp.211-7 [Periódico revisado por pares]

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  • Título:
    The importance of novelty: male-female interactions among blue-black grassquits in captivity
  • Autor: Dias, Raphael I ; Oliveira, Rui F ; Podos, Jeffrey ; Macedo, Regina H
  • Assuntos: Aggression ; Mate Choice ; Mate Sampling ; Paternity ; Volatinia Jacarina ; Environment ; Interpersonal Relations ; Mating Preference, Animal -- Physiology ; Passeriformes -- Physiology ; Sexual Behavior, Animal -- Physiology
  • É parte de: Behavioural processes, March 2014, Vol.103, pp.211-7
  • Descrição: Mate choice is a primary mechanism driving the evolution of sexually selected traits such as elaborate displays and ornaments. In a majority of taxa studied to date, females are seen to actively sample and evaluate multiple males, presumably to optimize mating opportunities. During this process females may encounter males both familiar and novel, a distinction that might influence how mate choice proceeds. Using a socially monogamous passerine, the blue-black grassquit (Volatinia jacarina), we studied how females respond to novel versus familiar ("paired") males, and how encounters with novel males influence subsequent interactions with their paired males. Additionally, we measured the hormonal response of males after visualizing their paired females interacting with novel males. We found that females were attentive to novel males irrespective of these males' phenotypic attributes, suggesting that in these interactions novelty is highly relevant. After exposure to novel males, females tended...
  • Idioma: Inglês

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