BIOACCUMULATION OF METALS IN TISSUES OF KENTISH PLOVER (CHARADRIUS ALEXANDRINUS) IN COASTAL AREAS OF KARACHI, PAKISTAN Page No: 4339-4347

By: Noreen Raza, Roohi Kanwal, Ghazala Yasmeen, Afsheen Zehra, M Usman A Hashmi, Tasneem, AS and Imtiaz Alam

Keywords: Kentish plover, metals, bioaccumulation, coastal areas

Abstract: Concentration of Cadmium (Cd) and Chromium (Cr) were measured in seawater samples and body tissues (liver and kidney) of Kentish Plover (Charadrius alexandrinus) collected from Hawksbay, Sandspit, and Korangi Creek Coastal areas of Karachi. All samples were collected quarterly from 2006-2009 and examined using Atomic Absorption Spectrometer (Perkin Elmer. A. Analyst-700). In seawater, highest level of Cd (0.460 mg/l) was measured during 3rd quarter at Hawksbay and low quantity of Cd (0.003 mg/l) found during 1st quarter at Korangi Creek. Maximum and lowest concentration of Cr was 0.497 mg/l and 0.002 mg/l during 4th and 2nd quarter at Korangi creek and Hawks Bay, respectively. In the body tissues, peak stage of Cd (10.317 ug/g) was observed in liver during 2nd quarter at Sandspit and lowest Cd (0.857 ug/g) in kidney during 1st quarter at Korangi Creek. Maximum level of Cr (5.403 ug/g) was detected in kidney during 2nd quarter at Hawksbay and lowest level of Cr (0.743 ug/g) was found in Kidney in 2nd quarter at Sands pit



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