McCain B B, Malins D C, Krahn M M, Brown D W, Gronlund W D, Moore L K, Chan S L
Environmental Conservation Division, National Oceanic and Atmospheric Administration, Seattle, Washington 98112.
Arch Environ Contam Toxicol. 1990 Jan-Feb;19(1):10-6. doi: 10.1007/BF01059807.
A study was conducted to assess the potential for uptake of toxic chemicals by down-stream migrant salmon in an urban estuary. Juvenile chinook salmon (Oncorhynchus tshawytscha) were collected from the Duwamish Waterway (located in Seattle, Washington) and from the Nisqually River (a reference site). The mean concentrations of aromatic hydrocarbons and polychlorinated biphenyls (PCBs) in the stomach contents (food organisms) of salmon from the Duwamish Waterway were approximately 650 times and 4 times, respectively, higher than those in salmon from the Nisqually River. Similarly, the mean concentration of bile metabolites of aromatic compounds which fluoresce at benzo[a]pyrene wavelengths was 24 times higher in the urban salmon compared to the reference salmon, whereas the mean concentration of PCBs in liver of urban salmon was 3 times higher than that in reference salmon. The study clearly demonstrated that, during their residency in this urban estuary, juvenile chinook salmon bioaccumulate substantial levels of toxic chemicals. The possible effects of these chemical exposures on the health and survival of this species are not presently known.
开展了一项研究，以评估城市河口下游洄游鲑鱼摄取有毒化学物质的可能性。从杜瓦米什水道（位于华盛顿州西雅图）和尼斯夸利河（一个参考地点）采集了幼年奇努克鲑（Oncorhynchus tshawytscha）。来自杜瓦米什水道的鲑鱼胃内容物（食物生物）中芳烃和多氯联苯（PCBs）的平均浓度分别比来自尼斯夸利河的鲑鱼高出约650倍和4倍。同样地，在苯并[a]芘波长处发出荧光的芳香族化合物胆汁代谢物的平均浓度，城市鲑鱼比参考鲑鱼高24倍，而城市鲑鱼肝脏中多氯联苯的平均浓度比参考鲑鱼高3倍。该研究清楚地表明，幼年奇努克鲑在这个城市河口栖息期间，生物累积了大量有毒化学物质。目前尚不清楚这些化学物质暴露对该物种健康和生存的可能影响。
