Persistent organic pollutants in tissues of the white-blooded Antarctic fish Champsocephalus gunnari and Chaenocephalus aceratus.
Persistent organic pollutants in tissues of the white-blooded Antarctic fish Champsocephalus gunnari and Chaenocephalus aceratus.
复制标题
南极白血鱼 Champsocephalus Gunnari 和 Chaenocephalus aceratus 组织中的持久性有机污染物。
DOI：
10.1016/j.chemosphere.2016.01.089
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发表时间：
2016
期刊：
影响因子：
8.8
通讯作者：
M. Zennegg
中科院分区：
文献类型：
--
作者：
Anneli Strobel;P. Schmid;H. Segner;P. Burkhardt;M. Zennegg
持久性有机污染物(持久性有机污染物)在全球范围内的出现，不断促进其在诸如南极海等偏远地区的积累。南极鱼类具有较高的营养地位，但对化学物质的内源消除速率较低，预计会随着人为污染的增加而生物积累持久性有机污染物。利用化学分析方法，我们测量了在象岛周围南大洋捕获的南极银鱼肌肉和卵巢中多氯联苯、多溴联苯、六氯环己烷和滴滴涕的浓度，并确定了有毒当量(TEQs)和生物分析当量(BEQs)。我们使用了两种具有不同摄食习性和营养网状位置的物种：浮游性食性香头鱼和鱼类。我们的结果显示，卵巢中的污染物水平高于这两种物种的肌肉组织。大多数分析物浓度和TEQs(0.2-0.5)和BEQs(0.2)低于温带物种。与文献数据比较表明，20-22 ng−-1脂重(LW)和7-19.5 ng-−-1LW(7-19.5 ng/g)的多氯联苯和滴滴涕浓度在90年代的S时期高于在银鱼中测得的浓度，对于其他污染物，我们不能确定其时间趋势。我们发现污染物的生物累积量，特别是六六六和滴滴涕(分别为6.2g和19.5g g−1LW)高于印度公司(分别为3.8g和7.0g g−1LW)。然而，两种银鱼之间不同毒物类别的积累没有普遍的物种特异性积累规律。因此，对于这些物种来说，预期的污染物负荷与它们的生态特征之间的联系只是微弱的支持。
The global occurrence of persistent organic pollutants (POPs) continuously contributes to their accumulation also in remote areas such as the Antarctic Ocean. Antarctic fish, which hold high trophic positions but appear to possess low endogenous elimination rates for chemicals, are expected to bioaccumulate POPs with rising anthropogenic pollution.Using a chemical-analytical method, we measured concentrations of PCBs, PBDEs, HCBs, HCH and DDTs and determined toxic equivalents (TEQs) and bioanalytical equivalents (BEQs) in muscle and ovaries of Antarctic icefish caught in the Southern Ocean around Elephant Island. We used two species with different feeding habits and trophic web positions: the planktivorousChampsocephalus gunnariand the piscivorousChaenocephalus aceratus.Our results revealed higher contaminant levels in ovary than in muscle tissues of both species. Most analytes concentrations and the TEQs (0.2–0.5) and BEQs (0.2) were lower as in temperate species. Comparison with literature data points to higher PCB (20–22 ng g−1lipid weight (lw)) and DDT (7–19.5 ng g−1lw) concentrations than those measured in icefish in the 90's. For the other contaminants, we could not identify temporal trends. We found a higher bioaccumulation of contaminants, particularly HCB and DDTs, inC. aceratus(6.2 & 19.5 ng g−1lw, respectively) than inC. gunnari(3.8 & 7.0 ng g−1lw, respectively). However, there was no general species-specific accumulation pattern of the different toxicant classes between the two icefish. Thus, the expected link between contaminant burdens ofC. aceratusandC. gunnariand their ecological traits was only weakly supported for these species.