Biotransport is often associated with migration patterns of species, including large, anadromous salmonids. Several studies have reported biotransport of persistent organic pollutants in the Northern Hemisphere, but there is no published information on biotransport ocurring south of the equator. Chile’s Patagonia is one of the last largely intact natural areas in the world. The objective of this study was to determine whether persistent organic pollutants are transported by the invasive Pacific Chinook salmon (O. tshawytscha) from the Pacific Ocean to Chilean Patagonia. Samples of juvenile and adult Chinook salmon were analyzed for polychlorinated biphenyls, pesticides and polybrominated diphenyl ethers. The results revealed that concentrations of POPs in adults migrating into Patagonian rivers were significantly higher than those found in juveniles migrating seaward. A mass balance analysis indicates that Chinook salmon are a source of persistent organic pollutants to Chilean Patagonia inland waters.

Capsule: Biotransport of Persistent Organic Pollutants (POPs) by Chinook salmon (O. tshawytscha) from the Pacific Ocean to Chilean Patagonia has been confirmed by mass balance of POPs.

生物运输通常与物种的迁移模式有关，包括大型，无水鲑科。几项研究报告了北半球持久性有机污染物的生物迁移，但没有关于赤道以南发生的生物迁移的公开信息。智利的巴塔哥尼亚是世界上最后完整的自然保护区之一。这项研究的目的是确定侵入性的太平洋奇努克鲑鱼（O. tshawytscha）是否能转移持久性有机污染物。）从太平洋到智利巴塔哥尼亚。分析了少年和成年奇努克鲑鱼的样本中的多氯联苯，农药和多溴联苯醚。结果表明，迁入巴塔哥尼亚河流的成年人体内的持久性有机污染物浓度明显高于向海迁徙的青少年。质量平衡分析表明，奇努克鲑鱼是智利巴塔哥尼亚内陆水域持久性有机污染物的来源。

胶囊：通过持久性有机污染物的质量平衡，已经确认了奇努克鲑鱼（O. tshawytscha）从太平洋向智利巴塔哥尼亚的持久性有机污染物（POPs）生物传输。