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| Bocquene, Gilles; Chantereau, Sebastien; Clerendeau, Christelle; Beausir, Emilie; Menard, Dominique; Raffin, Bernard; Minier, Christophe; Burgeot, Thierry; Leszkowicz, Annie Pfohl; Narbonne, Jean-françois. |
| A 3-year survey was made of several biological markers in mussels (Mytilus edulis) exposed in situ to the oil that came ashore after the wreck of the "Erika" tanker on the Brittany (France) coast in December 1999. The mussel response was assessed using a set of 7 biomarkers, most of them related to the metabolism of organic contaminants. After a series of validation tests, data was evaluated for only 5 biomarkers: acety1cholinesterase (AChE), glutathione S-transferase (GST), catalase (CAT), malondialdehyde (MDA) and deoxyribonucleic acid (DNA) adducts. No significant reductions in GST or CAT levels were observed, levels of DNA adducts and MDA were high during the 6 months immediately following the accident and levels of AChE were significantly lower during... |
| Tipo: Text |
Palavras-chave: Mytilus edulis; Mussel; Biomarkers; Monitoring; Survey; PAH; Polycyclic aromatic hydrocarbon; Oil spill. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-403.pdf |
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| Melis, Blandine; Bocquene, Gilles; Raffin, Bernard. |
| This report presents the state of art of endocrine disruption aspects in ecotoxicology. Some contaminants of the aquatic environment are able to mimic female fish hormones and thereby cause inappropriate feminisation of male fish. This feminisation involves artificial induction and emergence of ovotestis in male (oestrogenic disruption). Natural and synthetic oestrogenic hormones and several contaminants (alkylphenols, PCBs, phtalates and some pesticides) are already known to cause widespread feminisation of male. Two different types of analysis can be performed to detect oestrogenics effects. Immunochemical analysis of plasma (Enzyme-linked immunosorbent assay ELISA and radioimmuno assay RIA) shows that xenoestrogens induce vitellogenin and protein zona... |
| Tipo: Text |
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| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00076/18758/16328.pdf |
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| Belin, Catherine; Raffin, Bernard. |
| This document presents the results obtained through the French Phytoplankton and Phycotoxins Monitoring Network (REPHY), concerning the presence of toxic and harmful phytoplankton species along the French coast, from 1984 to 1995. The network REPHY is briefly described. Then the different species, and their associated events, are reviewed : first, species toxic to shellfish consumers, e.g. Dinophysis spp. and Alexandrium minutum, which respectively produce diarrheic and paralytic toxins ; then, species which are toxic or harmful for marine fauna (fish, shellfish). The monitoring results are preceded by the main knowledge on taxonomy, distribution, biology, ecology and toxicity of the concerned species. A final synthesis illustrates the distribution of... |
| Tipo: Text |
Palavras-chave: Phytoplancton; Phycotoxines; Surveillance; Espèces toxiques; Espèces nuisibles; Dinophysis; Alexandrium; DSP; PSP; Secteurs fermés; Phytoplankton; Phcotoxins; Monitoring; Toxic species; Harmful species; Dinophysis; Alexandrium; DSP; PSP; Closed areas. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00094/20514/18184.pdf |
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| Beliaeff, Benoit; Gros, Philippe; Belin, Catherine; Raffin, Bernard; Gailhard, Isabelle; Durbec, Jean-pierre. |
| This study aims to propose a tool to describe the long-term (10 years) variability of phytoplanktonic assemblages monitored by Rephy (French monitoring programme for phytoplankon and phycotoxins) in the English Channel, the Bay of Biscay and the Mediterranean French coastal waters. According to the sampling strategy (systematic survey, with a time-step of 1 or 2 weeks, and a between-sampling station distance ranging from less than one to several kilometres), the information content of the data is mainly relevant to the characterization of seasonal variability of populations at the mesoscale. For any given area, and for each of the 56 taxinomic units considered here, the data are thus processed in order to recognize the temporal succession of ‘phytoplankton... |
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| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00013/12403/9189.pdf |
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| Grouhel-pellouin, Anne; Raffin, Bernard. |
| Le REMI - réseau national de surveillance microbiologique du littoral - a pour objectif l'évaluation de la contamination bactériologique du milieu marin littoral et la compréhension des mécanismes de la contamination. Il a été structuré en 1989, avec la mise en place d'un ensemble de points sentinelles permanents (points S) renforcé ponctuellement par des points additionnels provisoires. Les prélèvements sont faits selon une stratégie aléatoire régulière pour les points S et certains points additionnels (études spécifiques ...) ou une stratégie opportune (certaines études, échantillonnage en période de risque de contamination ...). Le fonctionnement du REMI a été revu en 1993 en vue de son optimisation: adaptation des fréquences d'échantillonnage, révision... |
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| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00040/15149/12486.pdf |
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