Department of Evolutionary and Environmental Biology, Faculty of Natural Sciences, University of Haifa, Mount Carmel, Haifa 31905, Israel.
Environ Pollut. 2010 Dec;158(12):3626-33. doi: 10.1016/j.envpol.2010.08.004. Epub 2010 Sep 9.
Road runoff is a major source of environmental pollution, significantly threatening nearby aquatic habitats. Chemical analyses indicate high pollutant concentrations in the road's "first flush", but bioassays are more advantageous for addressing the cumulative effects of the numerous pollutants within the runoff. We used Bufo viridis embryos and larvae to assess the toxicity of road runoff from two major highways in Israel. We show, for the first time, that exposure to midseason runoff not only has an adverse effect on growth and development rates of B. viridis larvae but can also lead to increased rates of morphological deformations. Seasonal first flushes, despite having higher metal concentrations, did not adversely affect the toad larvae, apparently due to a counter effect of organic matter that potentially served as a supplementary energy resource. Road runoff can be a major cause for a qualitative decrease in the quality of aquatic habitats threatening amphibians in Israel.
道路径流是环境污染的主要来源，严重威胁着附近的水生栖息地。化学分析表明，道路“初期冲刷”中的污染物浓度很高，但生物测定对于评估径流中众多污染物的累积效应更为有利。我们使用绿蟾蜍胚胎和幼虫来评估来自以色列两条主要高速公路的道路径流的毒性。我们首次表明，暴露在中季径流中不仅会对绿蟾蜍幼虫的生长和发育速度产生不利影响，还会导致形态畸形率增加。尽管季节性初期冲刷的金属浓度更高，但对蟾蜍幼虫并没有不利影响，这显然是由于有机物的反作用，有机物可能作为补充能源。道路径流可能是导致以色列水生栖息地质量下降的一个主要原因，从而威胁到两栖动物。
