Seasonal variation of pollution biomarkers to assess the impact on the health status of juvenile Pacific oysters Crassostrea gigas exposed in situ

Environmental Science and Pollution Research International
Andrea Luna-AcostaHélène Thomas-Guyon

Abstract

In this study, a suite of sublethal stress biomarkers were analyzed in juveniles of the sentinel species, the Pacific oyster Crassostrea gigas, with a view to using them as pollution monitoring tools. The aim of this work was (1) to study baseline seasonal variations of biomarkers in different body compartments of C. gigas in the reference site and, after selecting biomarkers presenting no seasonal variations, (2) to compare responses of these biomarkers between contaminated and reference sites. Juvenile oysters were transplanted from Bouin (France), a reference site, to three different sites in Marennes-Oleron Bay (France), located in another water body and next to different contamination sources. Animals were exposed in situ for 3 months in summer, autumn, and winter. The following biomarkers were measured: superoxide dismutase (SOD) and glutathione peroxidase (GPx) in gills and digestive gland and lysozyme and phenoloxidase (PO) in plasma. No significant seasonal variations for SOD in gills and digestive gland, GPx in gills, and PO in plasma were observed in the reference site. Significant differences in enzyme activity were observed between contaminated and reference sites for SOD in gills and digestive gland and PO in plas...Continue Reading

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Citations

Sep 8, 2012·Environmental Science and Pollution Research International·Efthimia CotouMorgane Henry
Mar 22, 2014·Environmental Science and Pollution Research International·Catherine MouneyracEugénia Valsami-Jones
Oct 31, 2015·Annual Review of Animal Biosciences·Guofan ZhangLinlin Zhang
Apr 10, 2017·Ecotoxicology and Environmental Safety·Prachi S Shenai-TirodkarZakir A Ansari
Feb 21, 2021·Bulletin of Environmental Contamination and Toxicology·Katherine Saldanha NoletoRaimunda Nonata Fortes Carvalho Neta
Nov 15, 2014·The Journal of Experimental Biology·Sandra TroschinskiHeinz-R Köhler

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