Department of Animal Biology and Institute of Biodiversity (IRBIO), University of Barcelona, Barcelona, Spain.
Chemosphere. 2010 Sep;81(4):459-63. doi: 10.1016/j.chemosphere.2010.08.008. Epub 2010 Aug 25.
In 2007, 17 years after the first reported Mediterranean epizootic of striped dolphins (Stenella coeruleoalba), a new strain of the morbillivirus caused the deaths of dozens of striped dolphins that appeared dead on Western Mediterranean beaches. DDT and PCB levels were determined in these dolphins, and in individuals from sporadic strandings in the surrounding years. Comparison between the two epidemic events showed that organochlorine (OC) levels in the dolphins from 1990 epizootic were more than 10-fold higher for tPCB and 6-fold higher for tDDT than levels in dolphins from the 2007 outbreak. In contrast to what occurred in 1990, OCs from individuals affected by the second outburst fit well with curves of OC trends in the Mediterranean. Because the virulence of the 2007 epizootic was much lower, and the deceased dolphins affected by it did not present OC concentrations that were more elevated than in presumably healthy individuals, this second outburst is not believed to have been enhanced by OC pollutants.
2007 年，在首次报告地中海条纹海豚（Stenella coeruleoalba）爆发疫情 17 年后，一种新型麻疹病毒导致数十头在西地中海海滩上出现死亡的条纹海豚死亡。对这些海豚以及在随后几年偶然搁浅的个体进行了滴滴涕和多氯联苯水平的检测。对两次疫情的比较表明，与 2007 年疫情爆发时的海豚相比，1990 年疫情爆发时的海豚体内的多氯联苯（PCB）和滴滴涕（DDT）水平高出 10 倍以上。与 1990 年的情况不同，受第二次爆发影响的个体中的有机氯（OC）与地中海 OC 趋势曲线非常吻合。由于 2007 年爆发的疫情毒性要低得多，而且受其影响的死亡海豚体内的 OC 浓度并没有比据推测健康的个体高很多，因此，这次爆发不太可能是 OC 污染物增强所致。
