مشخصات پژوهش

عنوان	A comparative study of accumulated total mercury among white muscle, red muscle and liver tissues of common carp and silver carp from the Sanandaj Gheshlagh Reservoir in Iran
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Total mercury Bioaccumulation Common carp Silver carp Sanandaj Gheshlagh Reservoir
چکیده	The Sanandaj Gheshlagh Reservoir (SGR) is a mercury polluted lake that is located in the West of Iran. Common carp (Cyprinus carpio) and silver carp (Hypophthalmichthys molitrix) are the most abundant fishes in the SGR. A total of 48 common and silver carps (24 each) were captured randomly, using 50  6 m gill net (mesh size: 5  5 cm) during July to December 2009. Each month, the levels of accumulated total mercury (T-Hg) in white muscle, red muscle and liver tissues of these fishes were measured using an Advanced Mercury Analyzer (Model; Leco 254 AMA, USA) on the dry weight basis. There were no statistically significant differences between T-Hg concentrations in white muscle, red muscle and liver in common carp in comparison with similar tissues in silver carp (P > 0.05). The content of T-Hg in liver tissue of both species was lower than of white and red muscle tissues. Higher levels of accumulated T-Hg were observed during summer. Results showed that T-Hg concentrations in common and silver carps target tissues were strongly dependent on age, length and weight (P < 0.05). The results indicated that the levels of accumulated T-Hg in tissues of all samples with weights of over 850 g were greater than those limits established by WHO and FAO (500 ng g1).
پژوهشگران	فرزاد غیاثی (نفر سوم)، شهرام کبودوندپور (نفر دوم)، مهدی خوشناموند (نفر اول)