Effect of chronic sublethal hypoxia on growth in the spotted wolffish (Anarhichas minor) and its hybrid with Atlantic wolffish (A. lupus)

摘要

The overall aim of this study was to determine the impact of 4 different dissolved oxygen (DO) levels (40, 50, 60 and 100% air saturation) on growth, condition, food Intake, hematocrit and the activity of key enzymes of aerobic metabolism (citrate synthase, pyruvate kinase), anaerobic metabolism (lactate dehydrogenase), antioxidant activity (glutathione reductase) and oxidative stress damage (Tbars, aconitase) of the spotted wolffish (Anarhichas minor) and its hybrid with Atlantic wolffish (A. lupus). This paper presents preliminary results on length and mass gain as a function of DO. DO levels of < 50% saturation appear to slow down growth in mass in these wolffish.