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Microbiological and physicochemical characteristics of fish pond water obtained from various locations in Ughelli-South Local Government Area of Delta State were carried out. The mean total aerobic plate count ranged from 5.09 + 0.03 to 5.16 +0.01Log10cfu/ml. The mean fungal ranged from 4.65 ± 0.02 to 4.72 ± 0.02 Log10cfu/mL. The mean coliform count ranged from 3.63 + 0.01 to 3.71+0.01Log10cfu/mL. There was no count for Escherichia coli, Salmonella-Shigella and Vibrio cholera. Bacteria genera isolated included Micrococcus species (29.8%); Bacillus species (20.8%); Proteus species (16.4%); Pseudomonas species (17.1%) and Klebsiella species (15.6%). Fungal genera were Penicillum species (55.8%) and Aspergillus species (44.1%). The mean values ranges of the physicochemical parameters were pH, 5.85 to 6.26; temperature, 30.02 to 30.100C; conductivity, 30.35 to 51.70µS/cm; total dissolved solid, 16.08.to 27.41mg/L; turbidity, 6.80 to 5.71mg/L; biological oxygen demand, 4.85 to 5.30mg/L; chemical oxygen demand, 7.04 to 7.63mgL; salinity, 4.99 to 7.80ppt; alkalinity, 2.22 to 3.78mg/L; phosphate, 1.88 to 1.02mg/L; sulphate, 1.50 to 3.02mg/L; nitrite, <0.01 mg/L; nitrate, 0.17 to 0.55mg/L and ammonia, 0.54 to 1.00mg/L. This shows that the ponds contain microorganisms and chemicals that can cause disease to the fish and eventually to man when consumed.
Rosane Cavalcante Fragoso, Brasil
Chief Scientific Officer and Head of a Research Group
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