Date of Award
Master of Science (MS)
Sabir Bin Muzaffar
Dr. Jennifer Lavers
The marine ecosystems of the world are especially susceptible to pollution arising from anthropogenic sources. The Arabian Gulf ecosystem is a partially enclosed hypersaline system with increasing levels of pollution arising from ongoing development in the region. Marine biota are expected to be influenced by pollutants and levels of trace elements in marine species could be indicative of increasing pollution. Bioaccumulation of 19 elements (As, Ca, Cd, Co, Cr, Cu, Hg, K, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sr, V, Zn) in 120 specimens of Indian oil sardines (Sardinella longiceps) purchased from local fish markets of Sharjah, Ajman and Umm Al Quwain in the United Arab Emirates were studied. The fish samples were dissected to obtain liver, gastrointestinal tract and muscle tissue resulting in a total of 360 samples. The Varian 720-ES ( ICP-OES) system was used for determining metals and non-metals (As, Ca, Cd, Co, Cr, Cu, K, Mg, Mn, Mo, Na, Ni, P, Pb, S, Sr, V, and Zn) and the Varian SpectrAA 220 FS was used to determine Mercury (Hg) concentration in the liver, gastrointestinal tract and muscle of Sardinella longiceps. Discriminant analysis showed that some elements were useful in discriminating between the three sampling areas. Cadmium, chromium, and copper were high in concentration in the liver and gastrointestinal tract compared to the internationally acceptable limits. In addition, cadmium and chromium in the muscle samples had concentrations above or equal to permissible levels. Pollutants in muscle are indicative of high levels in the environment and is of great concern to marine food webs due to their potential for biomagnification. High levels in muscles raises health concern with respect to human consumption. Thus, there is an urgent need to monitor pollutants in fish and other marine organisms and link them with specific types of industries. Initiatives need to be taken for managing, protecting, and monitoring the marine environment.
Malik, Shaima, "CHARACTERIZATION OF METALS AND NON-METALS IN THE INDIAN OIL SARDINE (SARDINELLA LONGICEPS) IN THE NORTHERN UNITED ARAB EMIRATES" (2020). Biology Theses. 36.