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Influence of metal exposure on metallothionein synthesis and lipid peroxidation in two bivalve mollusks: the oyster (Crassostrea gigas) and the mussel (Mytilus edulis)

Published online by Cambridge University Press:  15 March 2002

Florence Géret ,
Agnès Jouan ,
Vincent Turpin ,
Maria João Bebianno  and
Richard P. Cosson
Florence Géret
Affiliation:
CIMA, Faculty of Marine and Environmental Sciences, University of Algarve, Campus de Gambelas, 8000 Faro, Portugal
Agnès Jouan
Affiliation:
ISOMer, UPRES 2663, Faculté des Sciences et Techniques,BP 92208, 44322 Nantes Cedex 3, France
Vincent Turpin
Affiliation:
ISOMer, UPRES 2663, Faculté des Sciences et Techniques,BP 92208, 44322 Nantes Cedex 3, France
Maria João Bebianno
Affiliation:
CIMA, Faculty of Marine and Environmental Sciences, University of Algarve, Campus de Gambelas, 8000 Faro, Portugal
Richard P. Cosson
Affiliation:
ISOMer, UPRES 2663, Faculté des Sciences et Techniques,BP 92208, 44322 Nantes Cedex 3, France
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Abstract

The impact of metals (silver, cadmium, copper, mercury and zinc) on metallothionein (MT) and malondialdehyde (MDA) levels of the oyster (Crassostrea gigas) and the mussel (Mytilus edulis) was studied after 4 or 21 days of metal exposure. Moreover, total protein levels were determined. After 4 days of metal exposure, although C. gigas and M. edulis accumulated cadmium and mercury concentrations in the gills and digestive gland, no significant variation of total protein level was occurred. After 21 days of exposure, metals were bioaccumulated in the gills and the digestive gland of both mollusks. A decrease of total protein concentrations in the gills of oysters and the digestive gland of mussels and an increase on metallothionein concentrations in the gills of both mollusks were observed. An increase of MDA levels was noticed for the gills and the digestive gland of mussels exposed for 21 days to either cadmium, silver or mercury whereas a decrease of MDA levels was observed in the gills of the oysters exposed for the same time to the same metals. The levels of proteins, MDA and MT were metal, species or organ dependent.

Keywords

MetalsProteinsMetallothioneinsMalondialdehydeBivalves
Type
Research Article
Information
Aquatic Living Resources , Volume 15 , Issue 1 , March 2002 , pp. 61 - 66
Copyright
© Elsevier, Inra, Ifremer, Cemagref, CNRS, 2002

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