Ecole Nationale Vétérinaire de Lyon, UMR INRA 1233, 1 Avenue Bourgelat, 69280 Marcy l'Etoile, France.
Chemosphere. 2010 Aug;80(10):1120-4. doi: 10.1016/j.chemosphere.2010.06.026. Epub 2010 Jul 1.
In this study, tissues of the Eurasian otter (Lutra lutra) from a naturally expanding population along upper Loire River (France) catchment were used for contaminants analyses. nine organochlorine pesticides, 16 PCB congeners, five heavy metals (lead, cadmium, mercury, copper and arsenic) and three anticoagulant rodenticides were quantified in livers of road-traffic killed otters. Organochlorine compounds and heavy metals were found in 100% of the samples, and occasional contamination by anticoagulant rodenticides was confirmed. Total organochlorine pesticides reached a maximum of 9.4 mg kg(-1) lipid weight. Higher data were observed for other contaminants, especially total PCBs and mercury. Maximal total PCBs values reached 64.8 mg kg(-1) lipid weight, and maximal measured mercury concentration was 8.2 mg kg(-1) fresh weight. Considering the expansion noted in the study area, global contamination does not seem to threat the short-term species conservation. Nevertheless, important values at some individual scale were noticed, suggesting high inter-individual variations in populations.
本研究利用来自卢瓦尔河上游（法国）流域自然扩张种群的欧亚水獭（Lutra lutra）组织，分析污染物。在因交通事故死亡的水獭肝脏中定量检测了 9 种有机氯农药、16 种多氯联苯同系物、5 种重金属（铅、镉、汞、铜和砷）和 3 种抗凝血灭鼠剂。100%的样本中均发现有机氯化合物和重金属，偶尔也确认存在抗凝血灭鼠剂污染。总有机氯农药的含量最高达 9.4mg/kg 脂肪重量。其他污染物的含量更高，尤其是总多氯联苯和汞。总多氯联苯的最高值达到 64.8mg/kg 脂肪重量，测定的最大汞浓度为 8.2mg/kg 鲜重。考虑到研究区域的扩张，全球污染似乎不会威胁到该物种的短期保护。然而，在一些个体尺度上仍注意到重要值，表明种群内个体间存在高度的变异。
