Antioxidant biomarker profile of chironomid larvae from carp ponds: Evaluation of the effects of different fish feeding patterns

A 102-day feeding trial was conducted to evaluate the effects of four different fish patterns on carp pond water quality and antioxidant biomarkers [superoxide dismutase (SOD), Catalase (CAT), Glutathione peroxidase (GPx), reductase (GR), S-transferase (GST) Thiol groups (SH)], protein content biomass midge Chironomus plumosus. Farmed were fed two commercial diets: Soprofish 25/7 Standard (containing 25% 7 % fat) 32/7 Profi Effect 32 fat). These feeds combined during a in patterns, designated as A, B, C D. In pattern received throughout experiment D, Effect. During B C, mixed used, alternating between lower higher diets. The study revealed no significant (P > 0.05) regimens quality, so their C. plumosus larvae can be evaluated independently. activities chironomid enzymes CAT GR showed clear statistically dependence < 0.05), which increased with increasing content. On other hand, activity SOD well larval noticeably affected by former its deterioration latter improvement. GPx GST correlated each other, but relationship found any measured abiotic factors 0.05). Overall, our results suggest that long-term supplementation highly concentrated diet may have preventive against oxidative stress support use model for assessing organic pollution zoobenthic fauna.