Physiological effects of normbaric environmental hyperoxia on Atlantic salmon (Salmo salar L.) presmolts

In order to investigate the dose–response relationship of normbaric hyperoxia, Atlantic salmon (Salmo salar) presmolts were reared in freshwater and exposed for 37days to four levels of environmental hyperoxia relevant in an intensive fish hatchery situation. The four oxygen saturation levels were: 93% (Control), 125%, 145% and 178%, measured in effluent water.