Hydro-environmental Biotechnology Laboratory, Department of Water Resources, Faculty of Agricultural Engineering, University of Concepción, Chile.
Faculty of Environmental Sciences/EULA-Chile Centre, Department of Aquatic Systems, University of Concepción, Barrio Universitario S/N, PO Box 160-C Concepción, Chile.
Environ Int. 2020 Sep;142:105803. doi: 10.1016/j.envint.2020.105803. Epub 2020 Jun 17.
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.
生物传输通常与物种的迁移模式有关，包括大型溯河洄游的鲑鱼。有几项研究报告了北半求持久性有机污染物的生物传输，但赤道以南是否发生生物传输还没有发表的资料。智利的巴塔哥尼亚是世界上最后几个基本保持完整的自然区之一。本研究的目的是确定是否有持久性有机污染物被从太平洋入侵的太平洋奇努克鲑鱼（Oncorhynchus tshawytscha）从太平洋输送到智利的巴塔哥尼亚。对幼鱼和成鱼奇努克鲑鱼进行了多氯联苯、农药和多溴二苯醚的分析。结果表明，进入巴塔哥尼亚河流的成鱼体内持久性有机污染物的浓度明显高于向海洋洄游的幼鱼。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。结论：通过持久性有机污染物的质量平衡，已经证实了奇努克鲑鱼（Oncorhynchus tshawytscha）从太平洋向智利巴塔哥尼亚的生物传输。
