Universidade de São Paulo, Instituto Oceanográfico, Laboratório de Química Orgânica Marinha, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil.
Universidade de São Paulo, Instituto Oceanográfico, Laboratório de Química Orgânica Marinha, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil.
Mar Pollut Bull. 2021 Jun;167:112283. doi: 10.1016/j.marpolbul.2021.112283. Epub 2021 Mar 31.
Studies of persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), organochlorinated pesticides (OCPs), and polybrominated diphenyl ethers (PBDEs), in sea turtles are reported, but there are still spatial data gaps worldwide. POP contamination of live female blood plasma from Caretta caretta (n = 28), Chelonia mydas (n = 31) and Lepidochelys olivacea (n = 19), which nest in Brazil and feed along the South Atlantic Ocean, was investigated. Carbon and nitrogen stable isotopes from red blood cells (RBC) were also evaluated to obtain information about trophic ecology. C. caretta had the highest POP concentrations, followed by L. olivacea and C. mydas. PCBs predominated in all species, and the major OCPs were the DDTs (dichlorodiphenyltrichloroethane and derivatives) and Lindane. POPs and stable isotopes revealed intra- and interspecific variations, which reflect the high plasticity in the use of habitat and food resources, making individuals within the same population susceptible to different exposures to pollutants.
研究报告表明，海龟体内存在持久性有机污染物（POPs），如多氯联苯（PCBs）、有机氯农药（OCPs）和多溴二苯醚（PBDEs），但全球范围内仍存在空间数据空白。本研究调查了在巴西筑巢并沿南大西洋觅食的海龟（Caretta caretta，n=28；Chelonia mydas，n=31；Lepidochelys olivacea，n=19）的雌性血液血浆中的持久性有机污染物污染情况。还评估了红细胞（RBC）中的碳氮稳定同位素，以获取有关营养生态的信息。C. caretta 的 POP 浓度最高，其次是 L. olivacea 和 C. mydas。所有物种中均以 PCBs 为主，主要的 OCPs 是滴滴涕（二氯二苯基三氯乙烷及其衍生物）和林丹。POPs 和稳定同位素揭示了种内和种间的变异，这反映了对生境和食物资源的高度利用的可塑性，使同一种群内的个体容易受到不同污染物的暴露。
