The effect of different levels of water turbidity on growth performance and immune response, oxidative stress and salinity stress resistance in the Caspian roach (Rutilus caspius)

Document Type : scientific research article

Authors

1 Assistant Professor, Department of Fisheries, Faculty of Agriculture Sciences and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran

2 Department of Biology, Faculty of Basic and Engineering, Gonbad Kavous University.

3 Golestan Province - Gonbad Kavos City - Basirt Boulevard - Gonbad Kavos State University

10.22069/japu.2023.21634.1808

Abstract

Turbidity is significant contributors to declines in populations of aquatic organisms. The aim of the present study was to investigate the effects of different levels of water turbidity on the growth performance, immune and antioxidant response of Rutilus caspius. A total number of 360 Caspian roach (with average weight 0.75± 0.052 g) randomly in 4 treatments and 3 repetitions in 12 tanks with concentrations of 0, 250, 500, 1000 mg L−1 (C0, C1, C2 and C3 respectively) was distributed for 40 days. Then the fish were subjected to salinity stress (13 g L-1) for 48 hours. The results showed that water turbidity significantly decreased growth performance and feed efficiency (P< 0.05). Total immunoglobulin and lysozyme activity in the control had a significant increase compared to other treatments (P< 0.05). Cortisol concentration in turbidity of 500 and 1000 mg SS L−1 (C2 and C3) had a significant increase compared to other experimental treatments (P< 0.05). Water turbidity significantly decreased tissue superoxide dismutase and glutathione peroxidase, but increased tissue malondialdehyde concentration (P< 0.05). Based on the obtained results, water turbidity with concentrations of 500, 1000 mg L−1 can reduce the physiological response and resistance of Rutilus caspius against salinity stress.

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Journal of Utilization and Cultivation of Aquatics
Volume 13, Issue 1
April 2024
Pages 31-44

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