Influence of environmental related concentrations of heavy metals on motility parameters and antioxidant responses in sturgeon sperm |
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| Authors: | Zhi-Hua Li Ping Li Borys Dzyuba Tomas Randak |
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| Institution: | 1. Department of Molecular Biology, University of León, 24071 León, Spain;2. Department of Biochemistry and Microbiology, University of Victoria, British Columbia V8W 3P6, Canada;3. Université de Lyon, UMR 5023 LEHNA, F-69100 Villeurbanne, France;4. INRA, USC 1369, ENTPE, F-69518 Vaulx en Velin, France;5. Departament d''Enginyeria Química, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain;6. IEO, Spanish Oceanographic Institute, Santander Oceanographic Centre, Promontorio de San Martín s/n, PO 240, 39080 Santander, Spain |
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| Abstract: | The effects of heavy metals (Cd, Cr and Cd + Cr) on the motility parameters and oxidative stress of sterlet (Acipenser ruthenus) sperm were investigated in vitro. Sturgeon sperm were exposed for 2 h to heavy metals at environmental related concentrations (0.1 mg L?1 Cr, 0.001 mg L?1 Cd, 0.1 mg L?1 Cr + 0.001 mg L?1 Cd) and higher concentrations (5.0 mg L?1 Cr, 0.05 mg L?1 Cd, 5.0 mg L?1 Cr + 0.05 mg L?1 Cd). Results revealed that environmental concentrations of heavy metals had no significant influence on motility parameters and antioxidant responses indices in sturgeon sperm, except for LPO level and SOD activity. But higher concentrations of these metals induced oxidative tress in sturgeon sperm in vitro, associated with sperm motility parameters inhibition. Our results suggest that using of sperm in vitro assays may provide a novel and efficiently means for evaluating the effects of residual heavy metals in aquatic environment on sturgeon. |
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