Evaluation of pollution in Camichin estuary (Mexico): Pro-oxidant and antioxidant response in oyster (Crassostrea corteziensis)

• Published in: Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Vol. 165; no. 4; pp. 476 - 482
• Main Authors: Girón-Pérez, M.I., Romero-Bañuelos, C.A., Toledo-Ibarra, G.A., Rojas-García, A.E., Medina-Diaz, I.M., Robledo-Marenco, M.L., Vega-López, A.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.08.2013
• Subjects: Animals; antioxidants; Antioxidants - metabolism; aquatic organisms; arsenic; benzo(a)pyrene; biomarkers; Brackish; catalase; Coastal aquatic systems; Crassostrea corteziensis; Environmental Monitoring; Estuaries; guidelines; health status; hydrogen peroxide; Hydrogen Peroxide - metabolism; lead; Lipid Peroxidation; Marine; Mexico; Mollusca; naphthalene; Ostreidae - drug effects; Ostreidae - metabolism; Oxidative Stress; oxygen; Oyster; oysters; PAHs; pollutants; polycyclic aromatic hydrocarbons; Reactive Oxygen Species - metabolism; stress response; Trace metals; Water Pollutants, Chemical; water pollution; zinc; Mexico; ISE, Mexico; IS, Tropical Pacific; Oxidative stress; PAHs; Oyster; Coastal aquatic systems; Trace metals
• ISSN: 1095-6433; 1531-4332
• DOI: 10.1016/j.cbpa.2013.03.008

The physiological system of molluscs, particularly pro-oxidant and antioxidant mechanisms, could be altered by pollutants and induce disturbance on health status and productive parameters of aquatic organisms, such as oyster. Therefore, the aim of this study was to evaluate the chemical contamination in water (total metals and polycyclic aromatic hydrocarbons) and oxidative stress parameters in oysters (Crassostrea corteziensis) in Camichin estuary, located in Mexican Tropical Pacific. The results obtained showed the presence of arsenic, lead and zinc, as well as naphthalene, pyrene and benzo[a]pyrene in concentrations relatively higher than criteria established by local and international guidelines. Regarding the biomarkers of oxidative stress response (H2O2 and O2 concentration, catalase activity, lipid peroxidation, and hydroperoxide concentration), differences between oyster from estuary and control group were significant. These results indicate that these pollutants could be related with oxidative stress detected in oyster.