In Vivo Changes in the Activity of (Gill, Brain and RBC) ATPases from Oreochromis mossambicus as a Response of Environmental Ionic Changes

The study concerns with the effects of different ionic strength concentrations of nacl in fish environment on the in vivo activity of na^+, k^+-atpase from the gills, brain and red blood cells oftilipia, oreochromis mossambicus. the most important changes in na^+, k^+-atpase activity during exposure to the nacl concentrations were represented by an increase in the brain and a decrease in gills and rbc na^+, k^+-atpases activity at higher concentrations. total protein concentrations of gills and brain homogenates were decreased but increased in rbc’s homogenates at higher ionic strengths.