Ventilation rates indicate stress-coping styles in Nile tilapia

Springer Science and Business Media LLC - Tập 36 - Trang 851-855 - 2011
Rodrigo E Barreto1, Gilson L Volpato1
1Instituto de Biociências, UNESP – Univ Estadual Paulista, Campus de Botucatu – Rubião Jr, Botucatu, Brazil

Tóm tắt

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.

Tài liệu tham khảo

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