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	Provedor de dados ArchiMer (10) Autor His, Edouard (5) Masson, Daniel (2) Robert, Rene (2) Berthe, Franck (1) Cossa, Daniel (1) Dubernet, Jean-françois (1) Elbaz-poulichet, Françoise (1) Galgani, Francois (1) Gnassia-barelli, Mauricette (1) Grizel, Henri (1) Lassus, Patrick (1) Maurer, Daniele (1) Michel, Pierre (1) Morlaix, Martine (1) Romeo, Michèle (1) Scribe, Pierre (1) Mais... Palavra-chave Ecotoxicologie (10) Crassostrea gigas (3) Ecotoxicology (3) Algues unicellulaires (2) Biogeochemistry (2) Contamination (2) Marais Charentais (2) Algae (1) Anomalies de la reproduction (1) Arsenic (1) Atrazine (1) Azote (1) Bassin d'Arcachon (1) Bio essais (1) Biogeochimie (1) Biogéochimie (1) Cell division (1) Chaestoceros calcitrans (1) Chaetoceros calcitrans (1) Charente Maritime Département (1) Mais... Tipo do documento Text (10) Ano 2000 (2) 1997 (1) 1993 (3) 1992 (1) 1991 (1) 1985 (2) Mais... País France (10) Idioma Francês (10)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 10 Primeira ... 1 ... Última Biologie et écotoxicologie des véligères de Crassostrea Gigas (Thunberg) dans le bassin d'Arcachon ArchiMer His, Edouard. This study analyses the larval recruitment and biology in Crassostrea Gigas, in the Arcachon Bay. Three types of observations were conducted: - a study of the reproduction anomalies in C. gigas between 1976 and 1981. - observations of the particulate nutrition of the veligeres. - ecotoxicologic experiments (organostannic action on oyster reproduction, mostly). The reproduction anomalies in C. gigas could not be attributed to either the genitors' quality or the water quality in the Arcachon Bay, but to a perturbation of the veligeres' trophic regime; the hypothesis of an alteration of the nanoplancton in the Bay, during the summer period, and linked to the action of the organotins is highly considered. The assumption of responsibility of the particulate... Tipo: Text Palavras-chave: Organostanniques; Ecotoxicologie; Nutrition; Anomalies de la reproduction; Bassin d'Arcachon; Crassostrea gigas; Véligères; Recrutement. Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/these-3347.pdf Contribution à l'étude de la qualité des eaux de rejet agricoles dans les marais charentais ArchiMer Masson, Daniel; His, Edouard. The agricultural fresh water swamp of Moëze-Brouage, in Charente-Maritime, witnesses the replacement of cattle rearing in the grasslands by intensive farming affecting the quality of waste waters flowing into the ocean. The proximity of the oyster culture basin of Marennes-Oléron and of the ponds lead to the implementation of some ecotoxicological tests, which turned out to be largely positive on some of the swamp's outlets, with negative effects on the tested organisms. Tipo: Text Palavras-chave: Charente Maritime Département; Marais Charentais; Ecotoxicologie; Eaux de rejet agricoles. Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/rapport-6311.pdf Ecotoxicologie à l'Ifremer ArchiMer Galgani, Francois. Créé en 91, le laboratoire Écotoxicologie concrétise la volonté de l'IFREMER de s'investir dans l'une des priorités actuelles, l'environnement. A vocation nationale et internationale, le laboratoire s'est fixé deux objectifs principaux: participer à la mise en place de réseaux de surveillance de la qualité du milieu marin et comprendre les mécanismes d'altération du métabolisme des organismes marins. Tipo: Text Palavras-chave: Ecotoxicologie. Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/publication-7453.pdf Influence de l'azote et du phosphore sur la croissance et la toxicité de Prorocentrum lima (Ehrenberg) Dodge ArchiMer Morlaix, Martine; Lassus, Patrick. Very few attempts have been made in order to investigate the role of nutrients on cellular growth and toxin production in dinoflagellates associated with DSP (Diarrhetic Shellfish Poison). Some preliminary results are presented here, aiming at a better knowledge of inorganic nitrogen and organic phosphorus effects upon division rate and toxin content of Prorocentrum lima (PL2V spanish strain). Nitrogen have a positive effect on growth rate, up to a threshold value of 880muM.l-1. Above this threshold the rate decreases. There is no effect on toxin content since okadaic acid and DTX1 cell contents remain low (4.8 +/- 0.5 pg.cell.-1) and steady. Phosphorus effect upon division rate follows a non-linear relationship, whereas cellular toxic content is inversely... Tipo: Text Palavras-chave: Croissance; Toxicité; Concentration chimique; Division cellulaire; Production; Espagne; Phosphore; Azote; Europe; Nutriment; Milieu marin; Zone côtière; Ecotoxicologie; Pyrrophycophyta; Algae; Thallophyta; Okadaïque acide; Prorocentrum lima; Growth; Toxicity; Chemical concentration; Cell division; Production; Spain; Phosphorus; Nitrogen; Europe; Nutrient; Marine environment; Coastal zone; Ecotoxicology; Pyrrophycophyta; Algae; Thallophyta. Ano: 1992 URL: http://archimer.ifremer.fr/doc/00133/24469/22483.pdf Journées du Département RA - Compte-rendu de la revue du thème "santé des cheptels" ArchiMer Grizel, Henri; Berthe, Franck. Les 21 et 22 juin 2000, le Département des Ressources Aquacoles a consacré ses journées annuelles à une revue du thème "santé des cheptels" et du dispositif de recherche en pathologie sur les filières poissons, crustacés et mollusques, domaine très stratégique pour l'aquaculture marine française. Les objectifs des ces journées, rappelés par Yves Harache, Directeur du Département, étaient les suivante : • Dresser le bilan des actions de recherche menées par l'Ifremer en pathologie des espèces aquacoles, • Repréciser la stratégie (objectifs/moyens) du Département des Ressources Aquacoles sur le thème "santé des cheptels", • Programmer les actions de recherche à venir, • Stimuler les interactions entre groupes de recherche et laboratoires impliqués. Le... Tipo: Text Palavras-chave: Pathologie; Ecotoxicologie; Mortalités; Ecopathologie; Poissons; Crustacés; Mollusques; Nacres. Ano: 2000 URL: http://archimer.ifremer.fr/doc/00164/27547/25711.pdf L'arsenic en milieu marin. Biogeochimie et ecotoxicologie ArchiMer Michel, Pierre. Arsenic levels of in the marine environment are high in comparison with other contaminants. Over the past twenty years, a large number of arsenic organic compounds have been identified in the water, sediments and living species. This document constitutes a synthesis of current knowledge on arsenic sources, and contamination levels, on its biogeochemical cycle as well as its toxic effects on human and marine fauna. This paper highlights in particular the effects of phosynthesis on arsenic speciation and its distribution throughout the marine environment. Problems of toxicity in the case of certain phyto- and zooplankton species are identified. Bioaccumulation in seaweeds, molluscs and fishes is documented as well, with special attention to the species... Tipo: Text Palavras-chave: Ecotoxicology; Contamination; Biogeochemistry; Arsenic; Ecotoxicologie; Contamination; Biogéochimie; Arsenic. Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-1448.pdf Le plomb en milieu marin. Biogeochimie et ecotoxicologie ArchiMer Cossa, Daniel; Elbaz-poulichet, Françoise; Gnassia-barelli, Mauricette; Romeo, Michèle. This report synthesises the knowledge on the biogeochemical cycle, bioconcentration processes and ecotoxicity of lead in the marine environment. Man induced changes on the lead cycle, especially along the French coasts are reviewed. Concentration levels, mechanisms and fluxes between geochemical reservoirs are assessed. Emphasis is given on sublethal effects and toxicity mechanisms. Quality standards used in European Community countries are listed. Conclusions and recommendations for environmental management and research are given. Tipo: Text Palavras-chave: Ecotoxicology; Contamination; Biogeochemistry; Lead; Ecotoxicologie; Contamination; Biogeochimie; Plomb. Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-1449.pdf Produits phytosanitaires et conchylicultue en Charente-Maritime ArchiMer Masson, Daniel; His, Edouard; Dubernet, Jean-françois; Scribe, Pierre. Le marais doux agricole de Moëze-Brouage, en Charente-Maritime, voit se développer les cultures intensives à la place de l'élevage sur prairies affectant la qualité des eaux de rejet vers le milieu marin. La proximité du bassin ostréicole de Marennes-Oléron et des claies a conduit à mettre en oeuvre des tests écotoxicologiques, lesquels sont largement positifs sur certains exutoires du marais, induisant des effets néfastes sur les organismes tests. Tipo: Text Palavras-chave: Eaux de rejets agricoles; Ecotoxicologie; Marais Charentais. Ano: 2000 URL: http://archimer.ifremer.fr/doc/00134/24516/22544.pdf Toxicité d'un désherbant, l'atrazine-simazine, sur les jeunes stades larvaires de Crassostrea gigas et sur deux algues fourrages, Isochrysis aff-galbana et Chaestoceros calcitrans ArchiMer Robert, Rene; His, Edouard; Maurer, Daniele. Corn culture has strongly developed in Aquitaine (France) over the past years, and lead to an increased use of pesticides and herbicides. One of the most commonly used formulations around the coast of the Arcachon Bay, an historical oyster spat capture zone, is the Atrazine-Simazine mix. The action limits of this product are defined on Crassostrea gigas larvae and on two nanoplankton test strains used in a controlled environment for their food, Isochrysis aff-galbana and Chaetoceros calcitrans. Herbicides can indeed directly impact on oyster larvae, but they can also have a negative impact by interfering with the development of the algae used as aquaculture feed and feed for veligeres. Tipo: Text Palavras-chave: Chaestoceros calcitrans; Isochrysis aff galbana; Algues unicellulaires; Crassostrea gigas; LARVES; Simazine; Atrazine; Ecotoxicologie. Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-6183.PDF Utilisation des élevages larvaires de Crassostrea gigas en écotoxicologie marine ArchiMer His, Edouard; Robert, Rene. The study of the anomalies occurring in the reproduction of Crassostrea gigas in the Arcachon Bay has been addressed through the development of some experimental protocols aimed at highlighting the action of a number of alteragenes on veligeres. The techniques used are described. They are based on the research of the action limits of the products tested on the breeding, formation and growth of oyster larvae. In addition, the sensitivity to micropollutants of the algae the veligere feed on is precised. Finally, larviculture and algae growth monitoring enabled the assessment of the quality of the sea-water and of the sediments in shellfish farming areas. Tipo: Text Palavras-chave: Chaetoceros calcitrans; Isochysis galbana; Algues unicellulaires; Crassostrea gigas; Larves; Bio essais; Ecotoxicologie. Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-6184.PDF Registros recuperados: 10 Primeira ... 1 ... Última

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