Kryvopysha V. The influance of the stress-factors of the aqueous enviroment on the adoptive functions of the carp's nervous system

This thesis dedicated the guestions of complex invastigation of the processes in the carp's brain under the influance of seasonal prevalence of temperature, changers of pH in the environment and toxicants such as ammonia, cations of hard metals. It has been establshed that hydrothermia and toxicity promote the activity of catabolistic processes. The functioning of gammaaminobutirate shunt which is one of the components in the regulation of energy and metabolic homeostasis and in the inhibition of processes has been exposed. The cations of magnium promote the decreasing of the concentration of ammonia, GABA, renewing the activity of acetilholinesterase against the background of the unfavourable influance of toxicants. These facts are indicative of their protective effect in stress influences onto the fish. The peculiarity of the carp's brain's energy supply under the influence of toxicants and the decrease of ATP concentration is the use of ketone bodies as additional energy substance.