Sánchez-Galán S, Linde A R, Izquierdo J I, García-Vázquez E
Universidad de Oviedo, Departamento de Biología Funcional, Facultad de Medicina, Spain.
Mutat Res. 1998 Feb 13;412(3):219-25. doi: 10.1016/s1383-5718(97)00186-1.
In this work we measured both micronuclei number in kidney erythrocytes and fluctuating asymmetry in wild brown trout (Salmo trutta), caught in different fluvial ecosystems of Asturias (northern Spain) characterized by different levels of anthropic influence. Brown trout samples from rivers with high anthropic influence possessed significantly higher averages of both micronuclei and fluctuating asymmetry than brown trout samples from less anthropic-influenced rivers. These findings demonstrated the sensitivity of the micronucleus test in kidney erythrocytes to biomonitor freshwater ecosystems. The positive association found between micronuclei average and fluctuating asymmetry at the populational level suggests that fluctuating asymmetry tests could be potential indicators of environmental threat. Variation of fish asymmetry with ageing indicates that fluctuating asymmetry surveys of wild populations should be carried out in trouts of the same age class.
在这项研究中，我们测量了从阿斯图里亚斯（西班牙北部）不同河流生态系统捕获的野生褐鳟（Salmo trutta）肾脏红细胞中的微核数量以及波动不对称性，这些生态系统具有不同程度的人为影响特征。来自受人为影响较大河流的褐鳟样本，其微核和波动不对称性的平均值显著高于来自受人为影响较小河流的褐鳟样本。这些发现证明了肾脏红细胞微核试验对淡水生态系统进行生物监测的敏感性。在种群水平上微核平均值与波动不对称性之间发现的正相关表明，波动不对称性测试可能是环境威胁的潜在指标。鱼类不对称性随年龄的变化表明，野生种群的波动不对称性调查应在同一年龄组的鳟鱼中进行。
