Level of Heavy Metals in Some Commonly Domesticated Fauna Species of Awba Dam Shorelines, Ibadan, Nigeria
[1]
Adebisi-Fagbohungbe T. Abiodun, Department of Forest Conservation and Protection, Forestry Research Institute of Nigeria, Jericho Hills, Ibadan, Nigeria.
[2]
Ojo S. Oluwagbemiga, Department of Wildlife and Ecotourism Management, University of Ibadan, Ibadan, Nigeria.
The level of heavy metals (Pb, Cd, Zn, Fe, and Cu) in blood of selected fauna species (Snail, Squirrel and Bird) of Awba dam were determined using digestion and Atomic Absorption Spectrophotometer methods (AAS). The metal concentrations in blood samples of the fauna showed Iron and Zinc to have higher concentration for both catchment area in snail (Fe: 0.54-0.49mg/kg; Zn: 0.31-0.34mg/kg). Squirrel and bird have their highest concentration of metals in Copper followed by Zinc. The mean values of Copper concentration in Squirrel range from (0.09 – 0.06mg/kg) for both lower and upper catchment respectively. Nonetheless, the values of all the metals analyzed for blood samples collected from Lower catchment of the study area were higher than those from the Upper catchment. This suggests possible mobility of metals from Lower to Upper through air drifting and runoffs, but was below values recommended by the World Health Organization (WHO), hence the need for further monitoring since there may be more activities in the nearest future.
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