Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/4779
Título: The importance of novelty: Male–female interactions among blue-black grassquits in captivity
Autor: Dias, Raphael I.
Oliveira, Rui Filipe
Podos, Jeffrey
Macedo, Regina H.
Palavras-chave: Aggression
Mate choice
Mate sampling
Paternity
Volatinia jacarina
Data: 2014
Editora: Elsevier
Citação: Behavioural Processes, 103, 211-217. doi:10.1016/j.beproc.2013.12.016
Resumo: Mate choice is a primary mechanism driving the evolution of sexually selected traits such as elabo-rate displays and ornaments. In a majority of taxa studied to date, females are seen to actively sampleand evaluate multiple males, presumably to optimize mating opportunities. During this process femalesmay encounter males both familiar and novel, a distinction that might influence how mate choice pro-ceeds. Using a socially monogamous passerine, the blue-black grassquit (Volatinia jacarina), we studiedhow females respond to novel versus familiar (“paired”) males, and how encounters with novel malesinfluence subsequent interactions with their paired males. Additionally, we measured the hormonalresponse of males after visualizing their paired females interacting with novel males. We found thatfemales were attentive to novel males irrespective of these males’ phenotypic attributes, suggesting thatin these interactions novelty is highly relevant. After exposure to novel males, females tended to respondaggressively towards their paired males; by contrast, the behaviour of males towards their paired femalesdid not change. Moreover, we did not detect any hormonal responses of males to viewing their pairedfemales interacting with novel males. Together these results suggest that the distinction between famil-iarity and novelty may hold special relevance for females in mate choice, a finding that bears upon ourunderstanding of the evolution of extra-pair paternity and reproductive behaviour.
Peer review: yes
URI: http://hdl.handle.net/10400.12/4779
DOI: 10.1016/j.beproc.2013.12.016
ISSN: 0376-6357
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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