Effects of metal accumulation on oxidative metabolism of Mytilus edulis, a commercial relevant mussel in North Patagonia, Argentina

SABATINI SEBASTIÁN; NOYA ABAD T; LEIS M; MINABERRY YS; YUSSEPPONE MS; KNACK DE ALMEIDA H; GENOVESE G; CALCAGNO JA

MARINE AND FRESHWATER RESEARCH

CSIRO PUBLISHING

Lugar: Collingwood; Año: 2023 vol. 74 p. 144 - 156

1323-1650

Context. Bivalve fishery represents an important socio-economic resource in Río Negroprovince, and Mytilus platensis is the main exploited species. Thus, biomonitoring trace metals inthis mussel is particularly relevant for both environmental protection and human consumption.Aim. Anthropogenic pollution and its environmental impact on mussels were experimentallyevaluated in situ in two coastline sites of northern Patagonia. Methods. Trace metal concentrations were quantified in the water of a harbour area (Port of San Antonio Este) and areference site (Isla Mejill ´on), an extraction location of M. platensis, were quantified.Metal accumulation and its effects on metabolic parameters were also measured in mussels.Results. Higher concentrations of chromium, nickel and zinc in water were registered in theharbour, along with copper and chromium in gills, digestive gland and mantle of M. platensis,were registered in the harbour. Furthermore, superoxide dismutase activity was augmented,whereas glutathione concentration was reduced in the digestive gland and mantle of musselsfrom that area. Moreover, the highest glutathione-S-transferase activities in mantle and lipidperoxidation, regardless of organ, were also found there. Conclusion. The harbour area hasa negative effect on M. platensis and its effects on metal accumulation and oxidative imbalanceare organ-specific. Implication. This work provided new insights into metal uptake of acommercialised mussel in a realistic environment in Río Negro province.