Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1248
Título: The effect of nest aggregation on the reproductive behaviour of the peacock blenny Salaria pavo
Autor: Saraiva, João Luis Vargas de Almeida
Barata, Eduardo Nuno
Canário, Adelino V. M.
Oliveira, Rui Filipe
Palavras-chave: Operational sex ratio
Resource monopolization Ria Formosa
Sex roles
Data: 2009
Editora: Blackwell Publishing
Citação: Journal of Fish Biology, 74, 754-762
Resumo: The effect of nest aggregation in courtship behaviour was tested experimentally in an ecologically constrained, sex-role reversed population of the peacock blenny Salaria pavo. Mixed sex groups of eight males and eight females were tested in experimental tanks, containing eight potential nests either aggregated or dispersed. In the aggregated treatment, males spent more time inside their nests and monopolized other potential nests, causing a female-biased operational sex ratio (OSR). In the aggregated treatment, females also expressed more courtship behaviour. The results in general support the prediction that the aggregation of nests promotes male monopolization of potential nests, resulting in fewer nest-holding males and therefore a female-biased OSR that leads to the reversal of sex roles.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1248
ISSN: 0022-1112
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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