Department of Biology and The Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193, Aveiro, Portugal.
CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Research Group of Ecotoxicology, Stress Ecology and Environmental Health (ECOTOX), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 2250-208, Matosinhos, Portugal.
Arch Environ Contam Toxicol. 2019 Apr;76(3):425-434. doi: 10.1007/s00244-018-00589-3. Epub 2019 Jan 1.
The investigation of organochlorine pesticides (OCPs) levels in sea turtles is an important issue in conservation research, due to the harmful effects of these chemicals. In the present study, OCPs concentrations were determined in the eggs of two sea turtle species (Eretmochelys imbricata and Chelonia mydas) collected from the Punta Xen and Isla Aguada (Mexican coast) in 2014 and 2015. Concentrations of 20 OCPs were analysed, including isomers of hexachlorocyclohexane, aldrin, chlordanes, endosulfans, methoxychlor, DDTs, and heptachlor. From the group of contaminants considered (analysed as families), the results revealed higher concentrations of ΣHCH and ΣDienes on both selected species. We analysed the relationship between turtle size and the OCPs concentrations; no correlation was found between the size of the female and concentrations in the eggs. In addition, principal component analysis indicated pattern differences between species and years, in good agreement with concentrations differences.
研究海洋龟类体内有机氯农药（OCPs）的水平是保护研究中的一个重要问题，因为这些化学物质具有有害影响。在本研究中，我们于 2014 年和 2015 年从墨西哥海岸的 Punta Xen 和 Isla Aguada 收集了两种海龟物种（Eretmochelys imbricata 和 Chelonia mydas）的卵，并测定了 OCPs 的浓度。我们分析了 20 种 OCPs，包括六氯环己烷异构体、艾氏剂、氯丹、硫丹、甲氧滴滴涕、滴滴涕和七氯。在所考虑的污染物组（作为家族进行分析）中，结果表明在这两个选定的物种中，ΣHCH 和 ΣDienes 的浓度更高。我们分析了海龟大小与 OCPs 浓度之间的关系；未发现雌龟大小与卵中浓度之间存在相关性。此外，主成分分析表明物种和年份之间存在模式差异，与浓度差异非常吻合。
