INVESTIGADORES
MALANGA Gabriela Fabiana
artículos
Título:
Assessment of antioxidant responses and trace metal accumulation by digestive gland of ribbed mussel Aulacomya atra atra from Northern Patagonia
Autor/es:
GIARRATANO E ; GIL MN ; MALANGA G.
Revista:
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 92 p. 39 - 50
ISSN:
0147-6513
Resumen:
Seasonalandspatialvariabilityoftracemetalconcentrationsandofabatteryofantioxidantparameters were evaluatedindigestiveglandoftheribbedmussel Aulacomyaatraatra. Fe,AlandCuaccumulated in tissueexhibitedmaximumvaluesinwinter,coincidingpartiallywiththehighestlabileconcentra- tions ofFeandCuinsediment.Metals,asotherpollutants,areknowntoinfluencetheoxidativestatus of organismsandantioxidantenzymeshavebeenoftenproposedasbiomarkersofcontaminanteffects. Seasonalvariationsoftracemetalsdidnotappeartoinfluencethoseofbiochemicalparameters,which generallyshowedanoppositetrendwithhigherenzymaticactivitiesinsummerwhentracemetal concentrationswerelower.OrganismsfromPuntaCuevas(controlsite)showedhigherinductionof reactiveoxygenspeciesproductionthanthosefrombothconsideredimpactedsites,suggestingthe possibilityofsomebiochemicaladaptationinorganismsorahighermodulationofenvironmentaland physiologicalfactorsonantioxidantresponsesthanlevelsoftracemetals.Thisstudy,whichisthefirst in theareainthismatter,showedthatseasonalvariationsofpotentialbiomarkersshouldbe incorporatedintointerpretationoflong-termbiomonitoringstudiesinthismarinecoastalecosystem.
