Effects of environmental pollution in caged mussels (Mytilus galloprovincialis) |
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| Institution: | 1. Finnish Environment Institute, Marine Research Centre, Hakuninmaantie 6, FI-00430 Helsinki, Finland;2. Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, Germany;3. Stockholm University, Department of Systems Ecology, Frescati Backe, Svante Arrhenius V 21A, SE-106 91 Stockholm, Sweden;4. Nature Research Centre, Institute of Ecology, Akademijos str. 2, LT-08412 Vilnius, Lithuania;5. Scientific Research Center for Ecological Safety, Russian Academy of Sciences, 18, Korpusnaya Str., 197110 St. Petersburg, Russia;6. Department of Environmental Safety and Regional Sustainable Development of Saint-Petersburg State University, St. Petersburg, Russia;7. University Bordeaux 1, Oceanic and Continental Environments and Paleoenvironments (EPOC, UMR 5805 CNRS), Laboratory of Physico- and Toxico-Chemistry of the Environment (LPTC), 351 cours de la Libération, F-33405 Talence, France |
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| Abstract: | Biological effects of environmental pollution, mainly related to presence of PAHs, were assessed in mussels Mytilus galloprovincialis caged in Priolo, an anthropogenically-impacted area, and Vendicari, a reference site, both located along the eastern coastline of Sicily (Italy). PAHs concentration and histopathological changes were measured in digestive gland tissues. Expression of cytochrome P4504Y1 (CYP4Y1) and glutathione S-transferase (GST), indicative of xenobiotic detoxification, and activity of catalase (CAT) as oxidative stress index, were evaluated.The results show a direct correlation between the high concentrations of PAHs in digestive glands of mussels from Priolo and the significantly altered activity of phase I (P < 0.001) and phase II (P < 0.0001) biotransformation enzymes, along with increased levels of CAT activity (P < 0.05). These findings show the enhancement of the detoxification and antioxidant defense systems. The mussel caging approach and selected biomarkers demonstrated to be reliable for the assessment of environmental pollution effects on aquatic organisms. |
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