Dissolved-Oxygen Requirements In Aquatic Animal Respiration

摘要

In aquatic animals, blood hemoglobin unloads oxygen to the tissue fluids. Coldwater species have higher dissolved-oxygen concentration requirements than warmwater species do. Although carbon dioxide is not highly toxic, high levels in the blood have many negative physiological consequences. As carbon dioxide increases, higher dissolved-oxygen tension is necessary to load hemoglobin with oxygen. Small fish use much more oxygen than large fish. Oxygen consumption roughly doubles with a 10deg C increase in temperature.