García-Álvarez Natalia, Boada Luis D, Fernández Antonio, Zumbado Manuel, Arbelo Manuel, Sierra Eva, Xuriach Aina, Almunia Javier, Camacho María, Luzardo Octavio P
Unit Histology and Pathology, Institute of Animal Health (IUSA), Veterinary School, University of Las Palmas, 35413 Arucas, Las Palmas de Gran Canaria, Spain.
Toxicology Unit, Department of Clinical Sciences, University of Las Palmas de Gran Canaria, P.O. Box 550, 35080 Las Palmas de Gran Canaria, Spain.
Mar Environ Res. 2014 Sep;100:48-56. doi: 10.1016/j.marenvres.2014.03.010. Epub 2014 Mar 27.
The concentrations of 18 polychlorinated biphenyls (PCBs), 23 organochlorine pesticides (OCPs), and 16 polycyclic aromatic hydrocarbons (PAHs) were determined in the blubber and liver of 27 bottlenose dolphins (Tursiops truncatus) stranded along the Canary Islands coasts from 1997 to 2011. DDTs (mean of 60,960 and 445 ng/g lw., respectively) and PCBs (mean of 47,168 and 628 ng/g lw., respectively) were the predominant compounds in both tissues. Among PCBs the highly chlorinated PCB 180, 153 and 138 were the predominant congeners. We found a p,p'-DDE/∑DDTs ratio of 0.87 in blubber and 0.88 in liver, which is indicative of DDT ageing. All the samples showed detectable values of any of the 16 PAH studied. Phenanthrene was the most frequently detected and at the highest concentration. According to our results, concentrations of OCPs, and especially PCBs, are still at toxicologically relevant levels in blubber of bottlenose dolphins of this geographical area.
对1997年至2011年期间搁浅在加那利群岛沿岸的27头宽吻海豚（瓶鼻海豚）的鲸脂和肝脏中18种多氯联苯（PCBs）、23种有机氯农药（OCPs）和16种多环芳烃（PAHs）的浓度进行了测定。滴滴涕（分别为平均60,960和445纳克/克脂重）和多氯联苯（分别为平均47,168和628纳克/克脂重）是这两种组织中的主要化合物。在多氯联苯中，高氯代的多氯联苯180、153和138是主要的同系物。我们发现鲸脂中p,p'-滴滴伊/总滴滴涕的比值为0.87，肝脏中为0.88，这表明滴滴涕已老化。所有样本中所研究的16种多环芳烃均有可检测值。菲是最常检测到的，且浓度最高。根据我们的结果，该地理区域宽吻海豚鲸脂中有机氯农药，尤其是多氯联苯的浓度仍处于毒理学相关水平。
