Beiras R, Bellas J, Fernández N, Lorenzo J I, Cobelo-García A
Laboratorio de Ecoloxía Mariña, Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus Lagoas-Marcosende, E-36200, Galicia, Vigo, Spain.
Mar Environ Res. 2003 Oct;56(4):531-53. doi: 10.1016/S0141-1136(03)00042-4.
Sediments from three Galician Rias were tested for toxicity using sea-urchin and ascidian sediment elutriate embryo-larval bioassays. Trace metal contents in seawater, sediments and mussels were also determined and subjected to multidimensional scaling methods which grouped stations according to chemical contamination. High metal contents were found in seawater, sediments and mussels from the Ria of Pontevedra, and moderate levels were detected in the Ria of Vigo and Ria of Arousa. The results revealed that samples assessed as toxic, according to the sea-urchin and ascidian embryo-larval bioassays, were among the most polluted by trace metals. A good agreement was reported between ordination plots resulting from applying multidimensional scaling to the chemical data, and the results of the biological endpoints tested.
利用海胆和海鞘沉积物淘析胚胎-幼虫生物测定法，对加利西亚三条里亚斯的沉积物进行了毒性测试。还测定了海水、沉积物和贻贝中的痕量金属含量，并采用多维标度法，根据化学污染情况对各站点进行分组。在庞特维德拉里亚斯的海水、沉积物和贻贝中发现了高金属含量，在维戈里亚斯和阿罗萨里亚斯检测到中等水平。结果表明，根据海胆和海鞘胚胎-幼虫生物测定法评估为有毒的样品，是痕量金属污染最严重的样品之一。将多维标度法应用于化学数据所得的排序图与所测试的生物学终点结果之间具有良好的一致性。
