Toxicity of Sublethal Concentrations of Glyphosate and Paraquat Herbicide in the African Catfish (Clarias gariepinus)

Ayanda, Opeyemi Isaac and Olasehinde, G. I and Ajayi, A. A. (2014) Toxicity of Sublethal Concentrations of Glyphosate and Paraquat Herbicide in the African Catfish (Clarias gariepinus). INTERNATIONAL JOURNAL OF AGRICULTURE & BIOLOGY, 6 (20). pp. 1359-1364. ISSN 1814 9596

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Abstract

The effects of exposing juveniles of African catfish (Clarias gariepinus) to two commonly used herbicides were studied over 8 weeks. Some fish biochemical parameters were evaluated over the period of the experiment. Fractionated concentrations of glyphosate (0.0265, 0.053 and 0.106 mg L-l) and paraquat (0.0035, 0.007 and 0.014 mg L-l) were administered to fish juveniles for eight weeks. These concentrations represent fractions of the 96 h LC50 which was determined in an earlier study. Antioxidant enzymes were analysed in the liver of the fish every fortnight. Comparing with the control, significant increases (p<0.05) in enzyme activities of superoxide dismutase (SOD), catalase (CAT), lipid peroxidation (LPO) and in glutathione peroxidase (GPx) were observed. These parameters were however not all concentration and time dependent. The result revealed that the two herbicides caused changes in fish antioxidant enzymes, as such could be useful in forestalling the ecotoxic effects of similar chemicals in the environmental xenobiotics. © 2018 Friends Science Publishers

Item Type:	Article
Uncontrolled Keywords:	Fish, Antioxidant, Herbicides, Sub-lethal, Enzymes
Subjects:	Q Science > QL Zoology
Divisions:	Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User:	Dr Isaac Opeyemi Ayanda
Date Deposited:	18 Sep 2018 10:35
Last Modified:	10 Apr 2019 11:25
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/11776

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