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| Cosson, Rp. |
| The bioaccumulation of several elements in the tissues of the vestimentiferan worm Riftia pachyptila, collected at various sites of the East Pacific Rise, has been evidenced. Important fluctuations of elemental levels are observed among specimens originating from different sites, or even from the same site. These fluctuations are related to the exposure of the sampled organisms and to the high variability of the vent fluids (frequency, duration, intensity, direction, chemistry). The storage of the elements as mineral compounds and the abundance of metallothioneins are responsible for their apparent lack of toxicity, and provide evidence of existing detoxication processes. Cadmium, copper and zinc have been quantified in the blood, leading to the hypothesis... |
| Tipo: Text |
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| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00094/20477/18147.pdf |
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| Geret, F; Cosson, Rp. |
| Heavy metals (Cd, Cu, Hg and Zn) and metallothionein levels were determined in oysters Crassostrea gigas from two sites: the Gironde Estuary (contaminated site) and Bourgneuf Bay (uncontaminated site). Metallothionein levels led us to suspect the presence of cadmium in the environment when quantified in the gills. Soluble cadmium and metallothioneins were positively correlated in the digestive gland of oysters from Gironde (contaminated site), but metallothionein levels in this organ were not significantly different from levels observed in the digestive gland of oysters from Bourgneuf Bay (uncontaminated site). Conversely, no correlation was noticed between metals and metallothioneins in the gills of oysters from Gironde despite metallothionein levels... |
| Tipo: Text |
Palavras-chave: Métallothionéines; Métaux; Crassostrea gigas; Biomarqueur; Metallothioneins; Metals; Crassostrea gigas; Biomarker. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00324/43561/44058.pdf |
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