Institute of Marine Sciences (ISMAR-CNR), Castello 1364/A, 30122 Venezia, Italy.
Environ Pollut. 2012 Dec;171:52-60. doi: 10.1016/j.envpol.2012.07.024. Epub 2012 Aug 4.
The present study assessed whether the bivalve Ruditapes philippinarum may be appropriately deployed as a bioindicator in monitoring transitional environments, in terms of bioaccumulation potential and biomarker responses. The concentrations of trace metals, PAHs and PCBs were determined in sediments and clam tissue, and biomarkers were estimated at various levels of biological complexity (i.e. metallothioneins, lipofuscins, survival-in-air and reburrowing behaviour). Sediments and clams were collected biannually in 2004 and 2005 at eight sites within Venice lagoon, which were influenced differently by natural and anthropogenic impacts. Results highlighted that the broad variations of pollutant concentrations in sediments were not consistent either with the body residuals or with the biomarker responses. Consequently, on the basis of the observed weak responsiveness and sensitivity to anthropogenic stressors we suggest a more cautious use for R. philippinarum as sentinel organism, at least in estuarine sediments in the north Adriatic transitional areas.
本研究评估了双壳类菲律宾蛤仔是否可以作为监测过渡环境的生物指示剂，从生物积累潜力和生物标志物反应的角度来看。在 2004 年和 2005 年，分别在威尼斯泻湖的 8 个地点，每两年采集一次沉积物和蛤组织样本，以测定痕量金属、多环芳烃和多氯联苯的浓度，并在不同层次的生物复杂性上估计生物标志物（即金属硫蛋白、脂褐素、空气存活和重新挖掘行为）。这些地点受到自然和人为影响的影响程度不同。结果表明，沉积物中污染物浓度的广泛变化与体内残留或生物标志物反应不一致。因此，根据观察到的对人为胁迫因素的反应较弱和敏感性，我们建议在北亚得里亚海过渡区的河口沉积物中，更谨慎地将菲律宾蛤仔作为指示生物使用。
