U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, WI 54603, USA.
Aquatic Toxicology Laboratory, Department of Biological Sciences, St. Cloud State University, St. Cloud, MN 56301, USA.
Reprod Toxicol. 2012 Jul;33(4):556-562. doi: 10.1016/j.reprotox.2011.01.005. Epub 2011 Feb 3.
Tree swallow (Tachycineta bicolor) samples were collected at a reference lake and a nearby lake (Lake Johanna) in east central Minnesota, USA contaminated with perfluorinated carboxylic and sulfonic acids. Tissues were analyzed for a suite of 13 perfluoroalkyl compounds (PFCs) to quantify exposure and to determine if there was an association between egg concentrations of PFCs and reproductive success of tree swallows. Concentrations of perfluoroocatane sulfonate (PFOS) were elevated in all tree swallow tissues from Lake Johanna compared to tissues collected at the reference lake. Other PFCs, except for two, were elevated in blood plasma at Lake Johanna compared to the reference lake. PFOS was the dominant PFC (>75%) at Lake Johanna, but accounted for <50% of total PFCs at the reference lake. There was a negative association between concentrations of PFOS in eggs and hatching success. Reduced hatching success was associated with PFOS levels as low as 150ng/g wet weight.
在美国明尼苏达州中东部的一个参考湖和附近的一个污染有全氟羧酸和磺酸的湖泊（Johanna 湖）采集了树燕样本。对 13 种全氟烷基化合物（PFCs）进行了组织分析，以量化暴露情况，并确定 PFCs 在蛋中的浓度与树燕的繁殖成功率之间是否存在关联。与取自参考湖的组织相比，Johanna 湖的所有树燕组织中的全氟辛烷磺酸（PFOS）浓度都升高了。与参考湖相比，Johanna 湖的血浆中除了两种之外的其他 PFC 浓度升高。PFOS 在 Johanna 湖是主要的 PFC（>75%），但在参考湖中仅占总 PFC 的<50%。PFOS 在蛋中的浓度与孵化成功率呈负相关。孵化成功率降低与 PFOS 浓度低至 150ng/g 湿重有关。
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