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ABSTRACT
Three(3) totally different sites of Benin City were studied, as well as bioindicators from these sites in this case Xenopus Laevis(tadpoles). The tail region of these specie were collected and used for the study of the effect of environmental pollution in these sites. Comparing several site-exposed tadpole species to controls, the study observed reduced levels of inhibitor enzymes antioxidant, superoxide dismutase, catalase, and glutathione peroxidase. The water from the habitat of these tadpoles were also collected and analyzed to check for physiochemical and heavy metals. Tadpoles from the Slaughter and Nifor Dump site contained more stress enzymes than those from the Capitol site which was used as the control. The research shows these various sites has deteriorated over time and indicates that excess metals caused aerobic stress in tadpoles, which was associated with alteration of antioxidant enzyme activities and other oxidative markers. Finally, the results showed that metal concentrations in these various sites were high. This indicates that pollutants are increasing and that puts the environment and its habitat at risk.
