Research Article

Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure

Volume: 47 Number: 2 April 29, 2026

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.

Keywords

Aquatic ecotoxicology, Antioxidant defense, Poecilia reticulata, Pyrethroid toxicity, Tau-fluvalinate

Supporting Institution

Van Yüzüncü Yıl University Scientific Research Projects Coordination Office

Project Number

FYL-2018-7267

Ethical Statement

The study was approved by the Local Ethics Committee for Animal Experiments at Van Yüzüncü Yıl University (Ethics approval reference number: YÜHADYEK-2018/03).

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APA
Özok, N., & Koç, A. (2026). Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure. Cumhuriyet Science Journal, 47(2), 236-242. https://doi.org/10.17776/csj.1749006
AMA
1.Özok N, Koç A. Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure. CSJ. 2026;47(2):236-242. doi:10.17776/csj.1749006
Chicago
Özok, Necati, and Abdurrahman Koç. 2026. “Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia Reticulata Tissues Tau-Fluvalinate Exposure”. Cumhuriyet Science Journal 47 (2): 236-42. https://doi.org/10.17776/csj.1749006.
EndNote
Özok N, Koç A (April 1, 2026) Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure. Cumhuriyet Science Journal 47 2 236–242.
IEEE
[1]N. Özok and A. Koç, “Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure”, CSJ, vol. 47, no. 2, pp. 236–242, Apr. 2026, doi: 10.17776/csj.1749006.
ISNAD
Özok, Necati - Koç, Abdurrahman. “Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia Reticulata Tissues Tau-Fluvalinate Exposure”. Cumhuriyet Science Journal 47/2 (April 1, 2026): 236-242. https://doi.org/10.17776/csj.1749006.
JAMA
1.Özok N, Koç A. Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure. CSJ. 2026;47:236–242.
MLA
Özok, Necati, and Abdurrahman Koç. “Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia Reticulata Tissues Tau-Fluvalinate Exposure”. Cumhuriyet Science Journal, vol. 47, no. 2, Apr. 2026, pp. 236-42, doi:10.17776/csj.1749006.
Vancouver
1.Necati Özok, Abdurrahman Koç. Oxidative Stress and Antioxidant Enzyme Alterations in Poecilia reticulata Tissues Tau-Fluvalinate Exposure. CSJ. 2026 Apr. 1;47(2):236-42. doi:10.17776/csj.1749006