Multiple-Biomarker Approach in a Commercial Marine Scallop from San Jose gulf (Patagonia, Argentina) for Health Status Assessmen

GIL MN; STURLA LOMPRÉ J; GIARRATANO E; MALANGA G

ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

SPRINGER

Año: 2019 p. 1 - 12

0090-4341

The health status of the commercial Tehuelche scallop Aequipecten tehuelchus from San Román and El Riacho in San Joségulf (Patagonia, Argentina) was evaluated through biomarkers widely used in ecotoxicological applications. Natural levels ofarsenic (As) and cadmium (Cd) were measured to determine their potential relationships with fuctuations of several oxidativestress biomarkers in the scallop. Oxidative biomarkers, such as catalase (CAT), glutathione S-transferase (GST), superoxidedismutase (SOD), metallothioneins (MT), reactive oxygen species (ROS), α-tocopherol (α-T), and lipid peroxidation (LPO)through thiobarbituric acid reactive substances (TBARS) and lipid radical (LR∙), were measured in gills, digestive gland,and muscle of Tehuelche scallop in winter (August 2015) and summer (January 2016). Levels of As and Cd and of mostof the biomarkers (SOD, ROS, TBARS, and LR∙) showed strong seasonal variability in the three tissues. In general, thehighest values were recorded in digestive gland. The Integrated Biomarker Response index indicated that the most stressedcondition of A. tehuelchus was in summer in San Román. Additionally, the Integrated Biomarker Response index showed astrong relationship among tissues and As and Cd accumulation. This kind of approach could be used as an integrated toolto identify the health status of scallop A. tehuelchus from San José gulf.