Some Basic Methods in Respiratory Physiology Studies Applied in the Siberian Sturgeon

Numerous studies have shown that extracellular acid-base status in fish is greatly sensitive to small variations of temperature, PCO2, and bicarbonate system in water. Whereas control of temperature and oxygenation of the environmental water is a usual practice in physiological studies on fish and even though water is directly in contact with the gills, the main site of acid-base and ionic regulations, the environmental acid-base status (pH, alkalinity, PCO2) has rarely been paid much attention.