Bioaccumulation of Heavy Metals in Pelagic and Benthic Fishes of Ogbese River, Ondo State, South-Western Nigeria

Abstract The bioaccumulation factors (BAFs) of heavy metal (Fe, Zn, Pb, Cd, Cr, Cu, Mn, and As) concentrations in benthic pelagic fish organs (muscles, gills, liver, hearts), metals water sediments Ogbese River, Ondo State, Nigeria were investigated. From the results, within permissible limits stipulated by World Health Organization (WHO). However, sediments, Fe, Mn higher than limits, while As, Cu limits. Heavy showed that all species implying no contamination. More so, BAFs revealed probability accumulation geoaccumulation index contamination factor to moderate potential ecological risk also indicating not extremely polluted for organisms but may be toxic lower ones. study concludes constant monitoring should conducted researchers Ministry Water Resource community aware danger human pollution can cause river.