Abstracto
- The Nile tilapia Oreochromis niloticus has been an introduced fish adapted to tropical conditions for its aquaculture production. The objective of this study is to determine the effect of temperature on oxygen consumption in individuals separated by behavioral phenotypes. The fish were separated into behavioral phenotypes using the restriction test and subsequently tested for oxygen consumption at room temperature and increasing the temperature using a respirometric chamber. The results show that proactive fish take more risk to face a challenge in the restriction test p <0.001. No significant differences were found in the ventilatory rate between proactive and reactive p> 0.05. There is a significant effect on oxygen consumption when the temperature increases p <0.001. There is an interaction between temperature and the measurement period in oxygen consumption in proactive individuals p <0.001 and reactive p <0.001.