Assessment of the Microbiological Quality of Clarias gariepinus Exposed to an Industrial Effluent in Nigeria

S. O. Adewoye and A. Lateef ()
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S. O. Adewoye: Ladoke Akintola University of Technology
A. Lateef: Ladoke Akintola University of Technology

Environment Systems and Decisions, 2004, vol. 24, issue 4, 249-254

Abstract: Abstract The microbiological impact of a detergent and soap industries effluent on Clarias gariepinus was assessed under laboratory conditions. The heterotrophic bacterial count obtained from fish surfaces ranged from 1.2 × 102−2.0 × 102cfu/ml amongst the control, while values of 4.8× 106−8.6 × 106 cfu/ml were obtained for the experimental fish exposed to the industrial effluent (0.025 ppm). The fungal count for the controls ranged from 1.2× 102−1.2 × 103 cfu/ml; while a range of 1.0 × 106−2.0 × 106 was obtained for the fish exposed to the industrial effluent. While twelve bacterial species were isolated from the fish exposed to the industrial effluent, only two were isolated from the parts of the control fish used in the study. The bacterial species are those in the genera Staphylococcus, Proteus, Streptococcus, Micrococcus, Bacillus, Pseudomonas, Serratia, Enterobacter, and Escherichia. The fungal isolates include Saccharomyces, Aspergillus, Rhodosporium, Candida, Alternaria, and Fusarium. The resistance of the bacterial isolates to the commonly used antibiotics showed that 100% were resistant to Augmentin, Amoxycillin and Cloxacillin, 85.71% to Tetracycline, 80.95% to Cotrimoxazole, 71.43% to Erythromycin, 33.33% to Chloramphenicol, and 28.57% to Gentamicin. Among the eight antibiotics tested, five patterns of multiple drug resistance were obtained, with the number of the antibiotics ranging from 4–8. The public health implications of these observations are discussed.

Keywords: industrial effluent; Clarias; environment; bacterial resistance; antibiotics (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1007/s10669-005-1000-7

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