Effects of reduced water oxygen saturation on growth and plasma cortisol levels in juvenile lumpfish (Cyclopterus lumpus L.) in aquaculture

Abstract

In the present study, primary responses (cortisol secretion) to long-term and short-term hypoxia are examined. For the long-term experiment groups that were exposed to lower oxygen saturation; 55%, 69% and 81% had increased plasma cortisol levels and decreased final body mass, length and overall specific growth rate compared to the control group which were exposed to 96% oxygen saturation.