Modulation of Trace Metal Accumulation in the Liver and Intestine of Amphibian Host Sclerophrys regularis by the Enteric Parasite Cosmocerca spp. Sampled in Lagos Metropolis, Nigeria

Abstract Background Recent studies have shown parasites as accumulation indicators that give critical information about the bioavailability of pollutants. To further buttress in assessment metal sink potentials, parasite Cosmocerca sp. was analyzed a total 168 host toads, Sclerophrys regularis , from three (3) study stations sampled around dumpsites and natural habitats selected parts Lagos Metropolis. Method Concentrations Zn, Ni, Co, Cu, Pb soil, parasite, intestine, liver toads at each location were using flame atomic absorption spectrometry. Results Comparison based on concentrations metals S. regardless collection site (dumpsite habitat) showed most accumulated zinc. Zinc significantly uninfected toad dumpsite, followed by infected counterparts. There also significant bioaccumulation lead dumpsites. The their insignificant. biota-sediment copper order dumpsite > habitat habitat. Copper As for cobalt, Insignificant occurred only A strong positive correlation (0.9546) between intestine indicated common source contamination relatively proportional rates. Although there parasites, negative relationship, however, parasites. Conclusions This current has demonstrated possibility employing bio-sink bioindicator zinc contamination. may therefore be promising protecting safeguarding health associated populace.