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首页> 外文期刊>The Science of the Total Environment >Polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and non-ortho-PCBs in eggs of white-tailed sea eagles collected along the Swedish coast in the Baltic Sea
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Polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and non-ortho-PCBs in eggs of white-tailed sea eagles collected along the Swedish coast in the Baltic Sea

机译：波罗的海瑞典沿岸采集的白尾海鹰卵中的多氯二苯并对二恶英，多氯二苯并呋喃和非原多氯联苯

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摘要

Concentrations of polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and dioxin-like non-ortho-PCBs were measured in white-tailed sea eagle (WTSE) eagle eggs collected along the Swedish coast of the Baltic Sea during the period 1992-2004. The eggs represent two different subpopulations with significantly different nestling brood sizes; the Baltic Proper (BP) with an approximately normal nestling brood size (1.62), and the south Bothnian Sea (sBS) with reduced nestling brood size (1.22) combined with a significantly higher rate of dead eggs. The aim was to investigate if this difference in reproductive outcome was linked to differences in exposure to dioxin-like compounds. Three eggs collected in Greenland in 2000 were included in the study to provide a reference sea eagle population outside of the Baltic Sea region. The concentrations of Σ PCDD, Σ PCDF and Σ non-ortho-PCB in the two subpopulations from the Baltic Sea (BS) region ranged from 0.41-4.1, 1.2-5.3 and 180-970 ng/g lipids, respectively, while in the Greenland population the ranges were 0.11-0.16, 0.22-0.33 and 57-83 ng/g lipid, respectively. 2,3,4,7,8-PCDF was the predominant congener in all areas and accounted for on average 31-49% of the total Σ PCDD/F concentrations. The total toxic equivalents (TEQ) in sBS WTSEs were higher (approximately 39 ng TEQ/g lipid) than reported in eggs for many other birds, and the major contributors to the TEQ in the Baltic Sea were the non-ortho-PCBs. A principal component analysis (PCA) showed a difference in congener pattern between the two Baltic regions that was statistically significant (Hotelling's T~2 test). We found no significant differences in the total TEQ between the two populations (sBS-BP) and thus no evidence was found linking the reproductive impairment in WTSE in sBS to the concentrations of PCDD/Fs or non-ortho-PCBs in the eggs.
机译：在沿波罗的海瑞典海岸采集的白尾海鹰（WTSE）鹰卵中测量了多氯二苯并对二恶英（PCDD），多氯二苯并呋喃（PCDF）和类二恶英类非原多氯联苯的浓度1992年至2004年。卵代表两个不同的亚群，它们的雏巢大小明显不同。波罗的海适足（BP）的雏巢大小约为正常（1.62），南波黑尼亚海（sBS）的雏巢大小减小（1.22），同时死卵的发生率也更高。目的是研究生殖结果的这种差异是否与二恶英样化合物的暴露差异有关。该研究包括2000年在格陵兰岛采集的三个卵，以提供波罗的海地区以外的参考海鹰种群。来自波罗的海（BS）区域的两个亚群中ΣPCDD，ΣPCDF和Σnon-ortho-PCB的脂类浓度分别为0.41-4.1、1.2-5.3和180-970 ng / g脂类。格陵兰岛种群的范围分别为0.11-0.16、0.22-0.33和57-83 ng / g脂质。 2,3,4,7,8-PCDF是所有领域的主要同源物，平均占总PCDD / F浓度的31-49％。 sBS WTSE中的总毒性当量（TEQ）高于鸡蛋中许多其他鸟类所报告的总毒性当量（TEQ / g脂质）（约39 ng TEQ / g脂质），在波罗的海，TEQ的主要贡献者是非原位PCB。主成分分析（PCA）显示两个波罗的海地区之间的同类模式差异具有统计学意义（Hotelling的T〜2检验）。我们发现两个种群（sBS-BP）之间的总TEQ没有显着差异，因此，没有发现将sBS中的WTSE生殖功能障碍与卵中PCDD / Fs或非邻位PCBs的浓度联系起来的证据。

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