The effects of warm temperature acclimation on constitutive stress, immunity, and metabolism in white sturgeon (Acipenser transmontanus) of different ploidies.

摘要: Previous studies suggest fish with additional copies of their genome (polyploids) underperform in suboptimal conditions and may be more susceptible to stress disease. The objective this study was determine the role ploidy plays physiological response white sturgeon chronically elevated water temperatures. White two ploidies (8 N 10 N) were acclimated ambient (18 °C) warm (22 °C) water. Bioindices (plasma cortisol, glucose lactate, total erythrocyte count, hematocrit, hemoglobin, mean volume, hemoglobin concentration), immunity (respiratory burst, plasma lysozyme, leukocyte count), cellular metabolic capacity (lactate dehydrogenase citrate synthase activity) measured before after a 6-week acclimation period. Both appear comparable constitutive immune parameters respond similarly warming. Hematological indices 8 N 10 N are similar oxygen carrying capacity; however, differences enzyme activity between indicate that have lower aerobic capacity. Our results implications for screening management on farms hatcheries, as affect performance at Further research is needed elucidate inducible responses metabolism different ploidies.