Assessment of the effects of Cu and Ag in oysters Crassostrea gigas (Thunberg, 1793) using a battery of cell and tissue level biomarkers

International audience Oysters are considered sentinel organisms in environmental water quality monitoring programs in which cell and tissue level biomarkers are reliable tools. Copper (Cu) and silver (Ag) are present in relatively high concentrations in several estuaries, potentially affecting envi...

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Bibliographic Details
Published in:Marine Environmental Research
Main Authors: Rementeria, A., Mikolaczyk, M., Lanceleur, Laurent, Blanc, G., Soto, M., Schäfer, J., Zaldibar, B.
Other Authors: Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2016
Subjects:
water quality
Chemical
Shellfish
Silver
procedures
Tissue
Toxicity
water pollutant
metabolism
Metal accumulation
Molluscs
Biomarkers
copper
Crassostrea gigas
Digestive glands
Eco-toxicology
Electric batteries
environmental monitoring
Environmental water
Heavy metals
Integrative biological response
Biomarker
Biological response
Animals
Ostreidae
Physiology
[CHIM]Chemical Sciences
Online Access:https://hal.science/hal-01495772
https://doi.org/10.1016/j.marenvres.2016.09.002
Description
Summary:International audience Oysters are considered sentinel organisms in environmental water quality monitoring programs in which cell and tissue level biomarkers are reliable tools. Copper (Cu) and silver (Ag) are present in relatively high concentrations in several estuaries, potentially affecting environmental and human health. Crassostrea gigas oysters were exposed during 28 days to a range of environmentally relevant concentrations of Cu and Ag alone or in mixture. Effects were studied through cell and tissue level biomarkers approach. Results indicated: changes in the Condition Index (CI), altered digestive gland epithelium and presence of histopathological alterations in the gonad and digestive gland of exposed oysters. A time-dependent increase in lipofuscin contents in exposed oysters and an increase in intralysosomal metal accumulation in digestive cells through the experiment were also recorded. The Integrative Biological Response (IBR) Index showed that even at low exposure levels, Ag and Cu can produce alterations on oysters’ health status. © 2016 Elsevier Ltd

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