Little egret (Eegretta garzetta) as monitor of mercury contamination in Shadegan wetland
2009
Zamani, R., Natural Resources and Marine Sciences Faculty of Tarbiat Modares University | Mahmoodi, A., Natural Resources and Marine Sciences Faculty of Tarbiat Modares University | Esmaeeli Sari, A., Natural Resources and Marine Sciences Faculty of Tarbiat Modares University | GHasempoori, S. M., Natural Resources and Marine Sciences Faculty of Tarbiat Modares University | Davoodi, M., Natural Resources and Marine Sciences Faculty of Tarbiat Modares University | Mansouri, J., Member of Scientific Board of Azad University(Tonekabon Branch)
Shadegan wetland is the largest wetland of Iran positioned within the southwest of Iran at the head of the Persian Gulf. Shadegan wetland is subject to increasing pollution from industrial, urban and agricultural sources. We assessed the persistent mercury in Shadegan wetland using as indicator the little egret (Eegretta garzetta). Levels of mercury were analyzed in feather, kidney, liver and muscle of little egrets collected (December 2007) in Shadegan wetland.Mercury levels in feather (2.61 mg/kg) and liver ( 3/64 mg/kg) were higher than those in muscle(1.21 mg/kg) and kidney(1.51 mg/kg). Concentrations of the mercury in feathers were below threshold that may affect the survival or reproduction of the little egrets. There were not gender difference in levels of mercury between males and females for little egrets. Mercury levels were generally high in feather little egrets collected in Shadegan wetland compared to those measured in other studies.
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