Impacts of High Concentration of CO2 on the Serum Biochemistry and Carbonic Anhydrase Enzyme Activity of Rainbow Trout, Oncorhynchus mykiss

In this study, the physiological effects that the increasing carbondioxide concentrations on rainbow trout, Oncorhynchus mykiss is evaluated by using serum biochemical variables and carbonic anhydrase activities. The fish were exposed for 14 days to 14 mg/L concentrations of CO2. The serum GLU value showed a significant increase in the group exposed to CO2 compared to the control group at days 14. Serum TRI, COL and blood CA values showed a significant decrease in the group exposed to CO2 at day 7 compared to the control group. The TRI value a statistically significant increase in the group exposed to CO2 at day 14 compared to the control group. In conclusion, this study results indicate that the some serum biochemical variables and blood carbonic anhydrase activity of rainbow trout significantly affected by high level of CO2.