Trace metals and oxidative status in soft tissues of caged mussels (Aulacamya atra) on the North Patagonia coastline

A. IRIEL; YUSSEPPONE MS; ORTIZ N; DI SALVATORE P; ALICIA FERNANDEZCIRELLI

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

ACADEMIC PRESS INC ELSEVIER SCIENCE

Lugar: Amsterdam; Año: 2018 p. 152 - 161

0147-6513

This study investigated metal accumulation and oxidative effects in mantle, gill and digestive gland of the ribbedmussel Aulacomya atra from the Argentinean North Patagonian coastline. Mussels were transplanted over an 18-month period from a site with low anthropogenic impact to a harbor site with higher seawater concentration ofaluminum, chromium, copper, manganese, nickel and zinc. Total trace metal concentration in seawater did notchange throughout the 18-month transplant in either site. A. atra bioaccumulated metals in digestive gland, gillsand mantle at different levels. Digestive gland had the highest concentration of metals, especially towards theend of the transplant experiment in the harbor area. Mussels transplanted to the harbor site experienced anupregulation in their antioxidant system, which likely explains the lack of oxidative damage to lipids despitehigher metal accumulation. These results demonstrate that A. atra selectively accumulates metals from the watercolumn and their prooxidant effects depend on the tissue antioxidant defenses and the exposure time.