Lead Toxicity: Bioaccumulation and Histopathological Study of the Gill of the Teleost Fish, Anabas Testudineus (Bloch, 1792) Exposed to Sublethal Concentration of Lead Nitrate

Abstract

                   Aquatic pollution is of prime concern since every kind of life invariably depends on water. Among pollutants, heavy metals are of greatest concern because  upon reaching water, heavy metals deteriorate the quality of water and cause harm  to both flora and fauna (Nriagu , 1998). Heavy metals are one of the principal causes of aquatic pollution and the magnitude of environmental degradation they caused is far beyond the recommended threshold limit values (Abdel-Meguid et al.2002).