caa a22 4500 477132596 CHVBK 20180405111707.0 cr unu---uuuuu 170330e19971201xx s 000 0 eng 10.1023/A:1018320315786 doi (NATIONALLICENCE)springer-10.1023/A:1018320315786 Sublethal effects of experimental exposure to mercury in European flat oyster Ostrea edulis: Cell alterations and quantitative analysis of metal [Elektronische Daten] [M. Bigas, C. Amiard-Triquet, M. Durfort, M. Poquet] Oysters display a diversity of uptake mechanisms for metallic elements and distribution in the target organs, namely gills and the digestive gland. Various tissues of the flat oyster, Ostrea edulis, were studied following experimental exposure to 0.025 μm (5 μg l) of mercury, for up to 34 days. All animals survived the treatment. Data indicate Hg accumulation in gill tissue with a maximum concentration of 38.76 μg g dry weight after 25 days of exposure. Hg levels were lower in remaining tissues, in which the maximum concentration (18.47 mg g-1 dry weight) was reached after 18 days of exposure. After these times, concentration in both tissues decreased. Results show that oysters can accumulate Hg from the environment, without their survival being affected during the experimental period. Structural alteration of epithelial tissues of gill and digestive gland of flat oyster was comparable with effects described for other metallic elements in bivalve molluscs. Interstitial tissue was disorganized in the digestive gland, and ultrastructural changes in intracellular endomembranes were detected in epithelial cells of the digestive gland after 18 days of treatment. After 25 days, absorptive epithelial cells of gills showed highly dilated, swollen microvilli. These intracellular alterations are parameters of the incipient response to the accumulation of mercury. Chapman and Hall, 1997 bioaccumulation nationallicence cellular alterations nationallicence digestive gland nationallicence gills nationallicence Hg nationallicence Ostrea edulis nationallicence Bigas M. Departament de Biologia Cellular Animal i Vegetal, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain aut Amiard-Triquet C. Service d'Ecotoxicologie, Faculté de Pharmacie, Université de Nantes, France aut Durfort M. Departament de Biologia Cellular Animal i Vegetal, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain aut Poquet M. Departament de Biologia Cellular Animal i Vegetal, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain aut Biometals Kluwer Academic Publishers 10/4(1997-12-01), 277-284 0966-0844 10:4<277 1997 10 10534 https://doi.org/10.1023/A:1018320315786 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1018320315786 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bigas M. Departament de Biologia Cellular Animal i Vegetal, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain aut NATIONALLICENCE 700 1- Amiard-Triquet C. Service d'Ecotoxicologie, Faculté de Pharmacie, Université de Nantes, France aut NATIONALLICENCE 700 1- Durfort M. Departament de Biologia Cellular Animal i Vegetal, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain aut NATIONALLICENCE 700 1- Poquet M. Departament de Biologia Cellular Animal i Vegetal, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain aut NATIONALLICENCE 773 0- Biometals Kluwer Academic Publishers 10/4(1997-12-01), 277-284 0966-0844 10:4<277 1997 10 10534 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer