Etude du transfert de quelques oligo-éléments métalliques entre le milieu sédimentaire estuarien et les poissons plats ‘mangeurs de sédiments’ |
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| Authors: | JC Amiard C Amiard-Triquet C Metayer R Ferré |
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| Institution: | Centre de Dosage des Eléments Traces, UER des Sciences Pharmaceutiques, 1 rue Gaston Veil, 44035 Nantes Cedex, France |
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| Abstract: | In order to study the transfer of trace metals (Cd, Pb, Cu, Zn) between sediments and living organisms, flatfishes (flounder, Platichthys flesus and sole, Solea solea) were collected monthly in the Loire estuary (France) for more than a year. Trace metal concentrations were determined in flatfish digestive contents and tissues. The influence of some ecological factors upon bioaccumulation of trace metals was considered.We consider the benthic way of life not to be responsible for a preferential bioaccumulation of trace metals in flatfishes. Although zinc accumulation in external organs is important, the hypothesis of an uptake via food and sediment cannot be rejected. |
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