Ventilation rates indicate stress-coping styles in Nile tilapia

Barreto, Rodrigo E. [UNESP]; Volpato, Gilson Luiz [UNESP]

Ventilation rates indicate stress-coping styles in Nile tilapia

Data

2011-12-01

Autores

Barreto, Rodrigo E.

Volpato, Gilson Luiz

Editor

Indian Acad Sciences

Tipo

Artigo

Direito de acesso

Acesso restrito

Resumo

Behavioural responses to stress can form distinct profiles in a wide range of animals: proactive and reactive profiles or coping styles. Stress responsiveness can also differentiate between the behavioural profiles. The tendency to regain feed intake following transfer to a novel social-isolation tank (the speed of acclimation) can discriminate between proactive or reactive profiles. Consequently, differential stress responsiveness can be linked to this feeding behaviour trait. This study shows that ventilation rates of Nile tilapia, Oreochromis niloticus (L.), correlate with the rate of feeding resumption, following transfer to a novel social-isolation aquarium. Therefore, ventilation rate (VR) indicates coping styles; consequently, VR is a proxy for the way fish will deal with environmental challenges.