Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure
Abstract
Tau-fluvalinate is a synthetic pyrethroid insecticide and acaricide that is extensively utilised for the management of numerous agricultural pests. However, mounting evidence suggests that tau-fluvalinate exerts a deleterious effect on the health of aquatic organisms, resulting in tissue damage and mortality. The objective of the present study was to evaluate the effects of sublethal tau-fluvalinate concentrations on oxidative stress and antioxidant enzyme activities in the liver, gills, and muscles of Poecilia reticulata. The fish were exposed to tau-fluvalinate concentrations of 0.0033, 0.0065, and 0.013 µg/L for a period of 96 hours. The activities of superoxide dismutase, catalase and glutathione peroxidase, in addition to malondialdehyde levels, were analysed in the liver, gills and muscles. A statistical analysis was conducted on these data (P<0.05). In all tissues, exposure to tau-fluvalinate resulted in significant decreases in antioxidant enzyme activities and marked increases in malondialdehyde levels, indicating increased oxidative stress. The findings reveal that sublethal tau-fluvalinate exposure weakens the antioxidant defence system and causes tissue damage in the liver, gills, and muscles of Poecilia reticulata.
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References
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Details
Primary Language
English
Subjects
Enzymes
Journal Section
Research Article
Publication Date
April 29, 2026
Submission Date
July 23, 2025
Acceptance Date
March 29, 2026
Published in Issue
Year 2026 Volume: 47 Number: 2