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Mercury content in commercial pelagic fish and its risk assessment in the Western Indian Ocean ArchiMer
Kojadinovic, Jessica; Potier, M; Le Corre, M; Cosson, R; Bustamante, Paco.
As top predators of pelagic food webs, large fish naturally bioaccumulate mercury (Hg). Determining Hg burdens in commercialized fish is essential considering the concern about effects of contaminants on human health and the legal thresholds that are therefore set for local consumption and/or exportation. Total Hg levels were measured in the muscular tissue of 183 fish of five commercially important species from the tropical zone of the Western Indian Ocean. All individuals were measured and sexed in order to study the impregnation of Hg with size and sex within each species. Values of Hg found in this part of the Indian Ocean were comparable to Hg in muscular tissue of the same species studied in other areas. The highest Hg levels were noted in Swordfish...
Tipo: Text Palavras-chave: Health standards; Mozambique channel; Reunion Island; Pelagic fish; Impregnation levels; Mercury.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1862.pdf
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Spatial variation of metal bioaccumulation in the hydrothermal vent mussel Bathymodiolus azoricus ArchiMer
Cosson, R; Thiebaut, E; Company, R; Castrec Rouelle, M; Colaco, A; Martins, I; Sarradin, Pierre-marie; Bebianno, M.
The variability of the bioaccumulation of metals (Ag, Cd, Cu, Fe, Mn and Zn) was extensively studied in the mussel Bathymodiolus azoricus from five hydrothermal vent sites inside three main vent fields of increasing depth along the Mid-Atlantic Ridge: Menez Gwen, Lucky Strike and Rainbow. Metal bioaccumulation varied greatly between vent fields and even between sites inside a vent field with B. azoricus showing a great capacity to accumulate metals. The bioaccumulation of these metals also varied significantly among tissues. The main target was the gills where metals were mainly associated with soluble compounds whereas in the digestive gland they were mainly associated with insoluble compounds. Storage of metals under insoluble forms in B. azoricus seems...
Tipo: Text Palavras-chave: Bathymodiolus; Mytilids; Hydrothermal vents; Azores; Metals; Bioaccumulation.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-3954.pdf
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