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Differential bioaccumulation of heavy metals in selected biomarkers of Clarias gariepinus (Burchell, 1822) exposed to chemical additives effluent

Dahunsi, S. O. and Oranusi, S. U. and Ishola, R. O. (2012) Differential bioaccumulation of heavy metals in selected biomarkers of Clarias gariepinus (Burchell, 1822) exposed to chemical additives effluent. Journal of Research in Environmental Science and Toxicology, 1 (5). pp. 100-106.

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Abstract

The toxicity of Sublethal concentrations of chemical additives effluents were investigated on African catfish Clarias gariepinus using a renewable static bioassay. The trend of bioconcentration of metals in the gut, liver, gills and kidney of the test organisms differs significantly (p < 0.05) and it followed the order, liver> gill >gut > muscle. The result revealed that the liver had Ni concentration of 0.0046 mg/L and 16.1208 mg/L of magnesium as the highest. In the muscle, Ni was not bioaccumulated (0.0000 mg/L) while the highest magnesium concentration of 10.7345 mg/L was recorded. The gill had the least concentration of 0.0010 mg/L for Cu while the highest concentration recorded for Mg was 12.6797 mg/L. The gut had Mn concentration of 0.0401 mg/L and Mg concentration of 14.5001mg/L. It was revealed that fish can bioaccumulate heavy metals from a polluted environment, which may result in reduction or impairment of natural population size and could be a risk to consumers. Consumption of fish from polluted environment should be discouraged.

Item Type: Article
Subjects: Q Science > QR Microbiology
Divisions: Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User: Mr Adewole Adewumi
Date Deposited: 20 Nov 2012 14:39
Last Modified: 20 Nov 2012 14:39
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/802

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