Aggressive behaviour traits predict physiological stress responses in Nile tilapia (Oreochromis niloticus)

Aggressive behaviour traits predict physiological stress responses in Nile tilapia (Oreochromis niloticus)

Author Barreto, Rodrigo Egydio Google Scholar
Volpato, Gilson Luiz Google Scholar
Faturi, Claudia de Brito Autor UNIFESP Google Scholar
Giaquinto, Percilia Cardoso Google Scholar
Freitas, Eliane Goncalves de Google Scholar
Castilho, Marisa Fernandes de Google Scholar
Institution RECAW
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
UNESP
Universidade Federal do Paraná (UFPR)
Abstract This study tested whether aggressive behaviour can predict individual variation in stress responses of Nile tilapia Oreochromis niloticus. We used a mirror test to measure tendency to aggressive behaviour, and calculated the attack frequency and time until the first attack (latency) for each fish. One day later, we measured plasma cortisol and glucose, and two days later, we measured ventilatory frequency (VF) (pre-confinement responses). Immediately after the VF measure, we subjected the same fish to 30 min confinement, followed by measurements of cortisol, glucose, and VF (post-confinement responses). We found that post-confinement stress cortisol, glucose, and VF were higher than pre-confinement responses. Attack frequency was negatively correlated with VF and latency was positively correlated with baseline glucose and VF. Thus, we conclude that attack frequency and latency to a mirror reflection could be used to predict baseline levels of physiological stress indicators in Nile tilapia.
Keywords stress
aggressive behaviour
physiological response
glucocorticoid
carbohydrate
respiration
Nile tilapia
Oreochromis niloticus
Language English
Date 2009-03-01
Published in Marine and Freshwater Behaviour and Physiology. Abingdon: Taylor & Francis Ltd, v. 42, n. 2, p. 109-118, 2009.
ISSN 1023-6244 (Sherpa/Romeo, impact factor)
Publisher Taylor & Francis Ltd
Extent 109-118
Origin http://dx.doi.org/10.1080/10236240902850392
Access rights Closed access
Type Article
Web of Science ID WOS:000268577500002
URI http://repositorio.unifesp.br/handle/11600/31366

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