Short Term Starvation of Juvenile Carp Cyprinus carpio L.Changes the Sensitivity of Intestinal Glycosidasesto an Increase in Water Temperature
It has been established that the activity of glycosidases (maltase and amylolytic activity) in the intestinal mucosa of juvenile carp Cyprinus carpio (L.) under a sharp increase in water temperature depends on the physiological state (satiety–starvation). The fish were acclimated to a temperature of 22°С during the summer (underyearling) and winter (yearling) seasons. An increase in water temperature at a rate of 8.0°C/h leads to an increase in amylolytic activity in satisfied fish; maltase activity does not change. Fasting for 3 or 10 days changes the response of glycosidase to temperature stress: the maltase activity increases, amylolytic activity does not change. Short-term starvation does not affect the thermal stability of juvenile carp: the values of the critical thermal maximum in hungry and satiated individuals do not differ.