Occurrences of trace metals in Penaeus natialis (Decapoda: Penaedae) from Brass river

Heavy metal bio-accumulation in the kidneys of scaly and non-scaly fishes from Epe Lagoon, Nigeria

“…Lawani and Alawode (1996) also reported higher concentrations of mercury (Hg) and Pb in Clarias gariepinus from River Niger. Ovuru and Alfred-Ockiya (2001) observed that the accumulation of zinc (Zn), Pb (lead), iron (Fe) and Hg in the tissues of Panaeus notialis from the Brass River system of Niger delta, exceeded the WHO safe limit for food consumption. Similarly, while an increased levels of copper (Cu), Zn and Pb in Oreochromis niloticus from Delimi River (Omoregie, Okoronkwo, Eziashi, & Zoakah, 2002) and Cu, Zn, Fe, cadmium (Cd) and manganese (Mn) in C. gariepinus from disused mining lakes in Jos (Akueshi, Oriegie, Ocheakiti, & Okunsebor, 2003) were also recorded; Nwani et al (2010) observed that the concentrations of Cu, Zn and Pb in gills and muscles of six fish species from Afikpo were within the WHO and FEPA prescribed limit.…”