Concentrations of organochlorine compounds (pesticides and PCBs), trace elements (Pb, Cd, Cu, and Hg), ¹³⁴Cs, and ¹³⁷Cs in the livers of the European otter (Lutra lutra), great cormorant (Phalacrocorax carbo), and European catfis

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• 作者：Hussein Alomar ; Charles Lemarchand ; René Rosoux…
• 关键词：Organochlorine ; Trace elements ; Otter ; Cormorant ; Catfish ; France
• 刊名：European Journal of Wildlife Research
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：62
• 期：6
• 页码：653-661
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Zoology; Ecology; Fish & Wildlife Biology & Management;
• 出版者：Springer Berlin Heidelberg
• ISSN：1439-0574
• 卷排序：62

文摘

In this study, liver samples of the European otter (Lutra lutra), great cormorant (Phalacrocorax carbo), and European catfish (Silurus glanis) from along the Loire River (France) were analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), trace elements (lead, cadmium, copper, and mercury), 134Cs, and 137Cs. Organochlorine compounds were found in 100 % of the samples. Residue level of PCBs in these predators was the highest followed by DDTs and endosulfan, and maximal PCB values reached 1.61, 1.96, and 0.28 mg/kg wet weight for cormorants, otters, and catfish, respectively. DDTs, endosulfan, and lindane were the abundant pesticides in the livers of these predators. Concentrations of copper, lead, and cadmium in the livers of top predators were generally low; a potentially toxic level of lead was found in only one cormorant (34.9 mg/kg dry weight). Mean mercury concentrations in cormorant, otter, and catfish livers were 5.47, 4.68, and 2.71 mg/kg dry weight, respectively, and exceeded toxic thresholds for more than 40 % of the cormorants. Levels of organochlorine compounds and trace elements in these predators are generally below known toxic thresholds, but potential combined effects are not studied and warrant more investigations.