Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1a, 11030 Belgrade, Serbia.
Ecotoxicol Environ Saf. 2012 Jun;80:244-51. doi: 10.1016/j.ecoenv.2012.03.004. Epub 2012 Apr 9.
In this study, 20 heavy metals and trace elements (Al, As, B, Ba, Cd, Co, Cr, Cu, Fe, Hg, Li, Mg, Mn, Mo, Ni, Pb, Si, Se, Sr and Zn) were analyzed in different tissues (muscle, liver, intestine, feather and bone) of the great cormorant (Phalacrocorax carbo) and in different tissues (muscle, liver, gills, kidney and gonad) of their main prey (common carp-Cyprinus carpio and Prussian carp-Carassius gibelio) during the nesting season. Cormorant and fish specimens were collected at the Ečka Fishing Farm (Serbia) and from the nearby river. Principal components analysis (PCA) showed that cormorant livers were differentiated from other four tissues by higher concentrations of Hg, Fe, Cu and Mo, feathers by higher concentrations of Al and Si, and bones by higher concentrations of Sr and Mg. Differentiation among the three age classes of cormorants was observed only with regard to elemental concentrations in their feathers: subadult cormorants were differentiated by higher Hg and Zn concentrations, while the adults were separated by higher concentrations of Fe. In comparison with their prey (common carp and Prussian carp) cormorants were differentiated by higher concentrations of Fe, Hg and Cu in the muscle. Toxic mercury concentrations above 4μgg(-1)dw were determined in the liver of juvenile cormorants, as well as in the liver and feathers of subadults. Hg concentrations were significantly correlated among all studied tissues. Cormorant had significantly higher concentrations of Fe and Hg in muscle and liver than two studied fish species.
在这项研究中，分析了繁殖季节大鸬鹚（Phalacrocorax carbo）不同组织（肌肉、肝脏、肠道、羽毛和骨骼）和主要食物（鲤鱼-Cyprinus carpio 和鲫鱼-Carassius gibelio）不同组织（肌肉、肝脏、鳃、肾脏和性腺）中的 20 种重金属和微量元素（Al、As、B、Ba、Cd、Co、Cr、Cu、Fe、Hg、Li、Mg、Mn、Mo、Ni、Pb、Si、Se、Sr 和 Zn）。鸬鹚和鱼类标本是在 Ečka 钓鱼场（塞尔维亚）和附近的河流中收集的。主成分分析（PCA）表明，鸬鹚肝脏与其他四种组织通过更高浓度的 Hg、Fe、Cu 和 Mo 区分开来，羽毛通过更高浓度的 Al 和 Si 区分开来，骨骼通过更高浓度的 Sr 和 Mg 区分开来。仅观察到三个年龄组的鸬鹚之间的分化，即与它们的羽毛中的元素浓度有关：亚成体鸬鹚通过更高的 Hg 和 Zn 浓度区分开来，而成年鸬鹚通过更高的 Fe 浓度区分开来。与它们的食物（鲤鱼和鲫鱼）相比，鸬鹚在肌肉中的 Fe、Hg 和 Cu 浓度更高。在幼年鸬鹚的肝脏中，以及亚成体的肝脏和羽毛中，确定了超过 4μg g(-1)dw 的有毒汞浓度。Hg 浓度在所有研究组织之间呈显著相关。鸬鹚肌肉和肝脏中的 Fe 和 Hg 浓度明显高于两种研究鱼类。
