Linde A R, Sánchez-Galán S, Izquierdo J I, Arribas P, Marañón E, García-Vázquez E
Departamento Biologia Funcional (Genetica), Facultad Medicina, Universidad Oviedo, Spain.
Ecotoxicol Environ Saf. 1998 May-Jun;40(1-2):120-5. doi: 10.1006/eesa.1998.1652.
Brown trout (Salmo trutta L.) is a native fish of the rivers of northern Spain. It is the dominant fish species in these rivers, and it is widespread over all the range of freshwater ecosystems in the area, including ecosystems potentially polluted with heavy metals. In this study, the potential of brown trout as biomonitor of heavy metal pollution and the effect of fish age on the reliability of the assessment are analyzed. Copper, lead, and cadmium concentrations of both abiotic compartments (water and sediments) and brown trout (S. trutta) from three northern Spanish rivers were analyzed. Significant correlations were found between sediment lead content and lead concentration in trout liver. One-year-old juvenile trouts were demonstrated to be useful as a biomonitor of copper and lead pollution, revealing between-location differences. Older trouts do not seem adequate to properly monitor heavy metal pollution. The effect of aging on the reliability of this species as biomonitor is discussed.
褐鳟（Salmo trutta L.）是西班牙北部河流的本土鱼类。它是这些河流中的优势鱼类物种，广泛分布于该地区所有淡水生态系统范围内，包括可能受到重金属污染的生态系统。在本研究中，分析了褐鳟作为重金属污染生物监测器的潜力以及鱼龄对评估可靠性的影响。分析了西班牙北部三条河流中非生物部分（水和沉积物）以及褐鳟（S. trutta）体内的铜、铅和镉浓度。发现沉积物铅含量与鳟鱼肝脏中的铅浓度之间存在显著相关性。已证明一岁的幼鳟可作为铜和铅污染的生物监测器，揭示不同地点之间的差异。年龄较大的鳟鱼似乎不足以恰当监测重金属污染。讨论了衰老对该物种作为生物监测器可靠性的影响。
