Abstract: Sea food is taken by most of the people in the world, and it serves as an important factor in the economy of a country in exports. Bioaccumulation of heavy metals in sea foods is a major threat to the world. Considering the present scenario and Kachchh becoming a fastest growing industrial hub with different category of industrial units, the present study was attempted to determine the heavy metal accumulation of ten different species of marine and freshwater fishes (Silver pomfret, Malai pich, Sherri, Tilapia, Surmai, Orange pomfret, Boye, Lady fish, Golden fish and Cat fish) collected from local market of Sikka- Jamnagar, Gujarat. The tissues of the fish samples were processed for estimation of Chromium, Cadmium, Mercury, Zinc, Nickel, Cobalt, Copper, Lead and Arsenic using Atomic Absorption Spectroscopy. The concentrations were compared with WHO/FDA’s permissible limits of heavy metals in fishes. Among the metals tested, Fe was found to be recorded with a maximum concentration of 2.6±0.03/g wet.wt. followed by Cu, Zn, Pb and As respectively. Toxic metal mercury was recorded in the range of 0.11±0.01– 0.13±0.01µg/g. Cobalt and manganese werenot found in any of the fishes studied. The overall heavy metal accumulation in fish species were in the order Cat fish >Golden fish >Sherri>Malai pich>Boye > Orange Pomfret >Sherrirespectively. Other fishes have recorded almost near similar concentrations of metals.
Keywords: Bioaccumulation; Biomagnification; Toxicity; Pollution; Sea foods.
Title: Bioaccumulation of heavy metals in marine and freshwater fishes of Sikka, Jamnagar coast of GoK, Gujarat
Author: Thashnamoorthy Dhananjayan, Kolandhasamy Prabhu, Kannan Karthikeyan
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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