Effects of Temperature on Parameters of Aerobic Metabolism and the Capacity for Oxygen Transport in Fish Adapted to Different Climatic Zones

Temperature stands out as one of the primary factors influencing physiological processes in ectothermic organisms. The impact of temperature increase on fish with diverse life histories varies significantly. Gaining knowledge about how fish respond to temperature elevation is crucial for understanding their susceptibility to climate change. Assessing aerobic metabolism provides valuable insights in this regard, and this chapter aims to evaluate the reliability of the electron transport system (ETS) activity assay by comparing physiological responses in fish from distinct climatic zones, specifically tropical and temperate regions. By conducting such comparisons, we can enhance our understanding of how fish from different climatic backgrounds may react to temperature increases and the potential implications for their adaptation to climate change.