Provenza Francesca, Pastorino Paolo, Anselmi Serena, Persiano Marco Leporatti, Scirocco Tommaso, De Rinaldis Gianluca, Fossi Maria Cristina, Panti Cristina, Renzi Monia, Specchiulli Antonietta
Department of Life Science, University of Trieste, 34127 Trieste, Italy; Bioscience Research Center, 58015 Orbetello (GR), Italy.
Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, 10154 Torino, Italy.
Environ Toxicol Pharmacol. 2023 Mar;98:104075. doi: 10.1016/j.etap.2023.104075. Epub 2023 Feb 2.
Transitional water ecosystems have low water exchanges and can trap chemicals and microplastics (MPs). In this study, MPs, trace elements, polycyclic aromatic hydrocarbon-PHAs levels and the oxidative stress response were assessed in Mytilus galloprovincialis from two Italian lagoon ecosystems (Orbetello and Varano). In addition, the ecotoxicological effects induced by the exposure of M. galloprovincialis to high-density polyethylene-HDPE MPs were also determined. Levels of trace elements were almost always comparable among the sites, whereas MPs were found only in mussels from Orbetello. PAHs were always under the limit of quantification. Glutathione peroxidase and malondialdehyde levels were significantly higher in mussels from Varano. As regard the exposure test, it was found a significant effect of treatment, site and their interaction on mortality and biochemical biomarkers in both fed and unfed mussels. However, principal component analysis suggests similar effects of both color and nourishment condition on biochemical biomarkers. These findings warrant further investigation.
过渡性水生态系统的水交换率低，能够截留化学物质和微塑料（MPs）。在本研究中，对来自意大利两个泻湖生态系统（奥尔贝泰洛和瓦拉诺）的加利福尼亚贻贝中的微塑料、微量元素、多环芳烃-PHAs水平以及氧化应激反应进行了评估。此外，还确定了加利福尼亚贻贝暴露于高密度聚乙烯-HDPE微塑料所诱导的生态毒理学效应。各采样点的微量元素水平几乎总是具有可比性，而微塑料仅在来自奥尔贝泰洛的贻贝中被发现。多环芳烃含量始终低于定量限。瓦拉诺贻贝中的谷胱甘肽过氧化物酶和丙二醛水平显著更高。关于暴露试验，发现处理、采样点及其相互作用对喂食和未喂食贻贝的死亡率和生化生物标志物均有显著影响。然而，主成分分析表明颜色和营养状况对生化生物标志物的影响相似。这些发现值得进一步研究。
