Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1299
Título: Aggressive behaviour and energy metabolism in a cichlid fish, Oreochromis mossambicus
Autor: Ros, Albert F. H.
Becker, Klaus
Oliveira, Rui Filipe
Palavras-chave: Mirror-elicited aggression
Agonistic display
Metabolic rate
Tilapia
Oreochromis mossambicus
Data: 2006
Editora: Elsevier
Citação: Physiology & Behavior, 89 (2), 164-170
Resumo: We have investigated the effect of mirror-elicited agonistic behaviour on oxygen consumption in the Mozambique tilapia, Oreochromis mossambicus (Cichlidae). Males exposed to their mirror image showed higher frequencies of both lateral display and tail-beating and escalated aggression more frequently than males exposed to a transparent glass that was used as a control for the presence of a novel object in the tank. This aggressive response was correlated with an increase in oxygen consumption. Overt aggression was highly correlated with display behaviour and with locomotor activity. Bivariate analyses showed high correlation (explaining about 64% of variation) between overt aggression, locomotor activity and metabolic rates. Weakly positive bivariate correlations between displays and metabolic rates turned spurious after partialling out aggression. The data suggest that energetic costs only emerge late during the conflict, when animals escalate their aggressive behaviour.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1299
ISSN: 0031-9384
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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