Effect of seasonality on oxidative stress responses and metal accumulation in soft tissues of Aulacomya atra,a mussel from the South Atlantic Patagonian coast |
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| Institution: | 1. IQUIBICEN – Departamento Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Intendente Guiraldes 2160, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina;2. CEBBAD – Departamento de Ciencias Naturales y Antropológicas, Instituto Superior de Investigaciones (ISI), Universidad Maimonides, Hidalgo 775, C1405BCK Ciudad Autónoma de Buenos Aires, Argentina;3. Centro Nacional Patagónico – Consejo Nacional de Investigaciones Científicas y Técnicas (CENPAT – CONICET), Boulevard Brown 2915, U9120ACD Puerto Madryn, Argentina;4. Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pab. II, Intendente Guiraldes 2160, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina;1. Associate Prof., Geology department, Faculty of Science, Aswan University, Aswan 81528, Egypt;1. Laboratorio de Ecotoxicología Acuática: Invertebrados Nativos (EAIN), Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Nuñez, 1428, Buenos Aires, Argentina;2. Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina;1. Group of Studies on Crustacean Biology, Ecology and Culture (NEBECC)—Zoology Department, Botucatu Biosciences Institute, UNESP, 18618-000, Botucatu, Brazil;2. Laboratory of Biology on Marine and Freshwater Shrimps (LABCAM)—Biological Sciences Department, Faculty of Sciences, UNESP, 17033-360, Bauru, Brazil;1. Materials Chemistry Department, V.N. Karazin Kharkiv National University, 4 Svoboda Square, Kharkiv 61022, Ukraine;2. Institute of Chemistry, State University of Campinas, PO Box 6154, 13083-970 Campinas, SP, Brazil |
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| Abstract: | This study investigated the effects of pollution and its interaction with temperature on the oxidative status of the ribbed mussel Aulacomya atra in the southern Atlantic Patagonian coast. Animals were collected from four sites with different degree and type of human activity impact, during the summer and winter of 2011. Seawater chromium, copper, manganese, nickel and zinc concentrations were measured, as well as metal accumulation, lipid peroxidation, protein oxidation, reduced glutathione levels, and enzymatic activities of superoxide dismutase and glutathione-S-transferase in gills and digestive glands.Metal bioaccumulation and oxidative stress responses in both tissues were generally higher in mussels from harbor areas. Water temperature had a remarkable effect on gill SOD activity and protein oxidation during winter in mussels from all locations.Methodologically, we conclude that measuring both metal bioaccumulation and oxidative stress responses allowed for a more accurate assessment of the biological effects of metal present in seawater. |
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| Keywords: | Trace metals Metal bioaccumulation Temperature effects Oxidative stress Antioxidant defenses |
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