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Registros recuperados: 12
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A dynamic and mechanistic model of PCB bioaccumulation in the European hake (Merluccius merluccius) ArchiMer
Bodiguel, Xavier; Maury, Olivier; Mellon-duval, Capucine; Roupsard, Francois; Le Guellec, Anne-marie; Loizeau, Veronique.
Bioaccumulation is difficult to document because responses differ among chemical compounds, with environmental conditions, and physiological processes characteristic of each species. We use a mechanistic model, based on the Dynamic Energy Budget (DEB) theory, to take into account this complexity and study factors impacting accumulation of organic pollutants in fish through ontogeny. The bioaccumulation model proposed is a comprehensive approach that relates evolution of hake PCB contamination to physiological information about the fish, such as diet, metabolism, reserve and reproduction status. The species studied is the European hake (Merluccius merluccius, L. 1758). The model is applied to study the total concentration and the lipid normalised...
Tipo: Text Palavras-chave: Dynamic Energy Budget (DEB) Bioaccumulation model; Bioenergetic Polychlorinated biphenyls (PCB) Demersal fish Merluccius merluccius.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6789.pdf
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A pollution-monitoring pilot study involving contaminant and biomarker measurements in the Seine Estuary, France, using zebra mussels (Dreissena polymorpha) ArchiMer
Minier, Christophe; Abarnou, Alain; Jaouen Madoulet, Agnes; Le Guellec, Anne-marie; Tutundjian, Renaud; Bocquene, Gilles; Leboulenger, François.
Zebra mussel (Dreissena polymorpha) is an invasive species that has proliferated in European and North American rivers and lakes during the last century. In this study, D. polymorpha has been used to provide information on contamination levels and biological effects in the Seine Estuary (France). The bivalves accumulated polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) to a high degree with values reaching 800 ng/g dry weight for PCBs (sum of 20 congeners), and 1,000 ng/g dry weight of PAHs (sum of 14 compounds) in the whole body. These values are among the highest reported of PCBs and, to a lesser extent, of PAHs in other contaminated areas in the world. Toxic equivalent quantities of PCBs and PAHs detected in zebra mussels...
Tipo: Text Palavras-chave: Biomarkers; Multixenobiotic resistance; Polycyclic aromatic hydrocarbons; Polychlorinated biphenyls; Dreissena polymorpha.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2130.pdf
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Détermination de la pollution chimique des baies de Jakarta, Banten, Cilacap (Indonésie). Hydrocarbures, organochlores, métaux ArchiMer
Martin, Jean-louis; Marchand, Michel; Le Guellec, Anne-marie; Caprais, Jean-claude.
Analyses of pesticides, polychlorobiphenyls (PCB's) and hydrocarbons have been carried out in sediments and water samples from the bays of Jakarta, Banten and Cilacap. Heavy metals (Hg, Cu, Mn, Zn, Fe, Pb, Cd, Ni, Co and Cr) have been analysed in sediment samples fram the same areas. - Organic pollutants : The results show that for pesticides, PCB and hydrocarbons, in water and in sediments, there is no significant pollution for the bays of Banten, Cilacap and Jakarta. The bay of Banten, where most of the concentrations are under the detection limits, that is ta say 2 ug/kg for the sediment and 2 ng/1 for the sea water, can be considered as a reference area. For total hydrocarbons and DDT, the bays of Cilacap and Jakarta show concentrations which can be...
Tipo: Text
Ano: 1983 URL: http://archimer.ifremer.fr/doc/00094/20546/18217.pdf
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Effets du fluor et du phosphogypse chez les organismes marins ArchiMer
Martin, J.l.; Le Guellec, Anne-marie; Cosson, R..
Dans le cadre général des recherches visant à déterminer l'action des effluents industriels et plus précisément du fluor dans le cas de cette étude, le programme dont les résultats sont présentés avait pour but de déterminer les effets de cet élément sur les organismes marins. Trois aspects essentiels ont été envisagés : - Effets létaux du fluor ; - effets du fluor sur certaines fonctions éthologiques ; - bio-accumulation de l'élément par les organismes marins.
Tipo: Text
Ano: 1982 URL: http://archimer.ifremer.fr/doc/00081/19267/16862.pdf
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Hydrologie, éléments nutritifs et matière organique dissoute en Méditerranée Nord-Occidentale (Campagne RNO-INTERSITE Il, 14-26 septembre 1984) ArchiMer
Aminot, Alain; Kerouel, Roger; Joanny, Michel; Le Guellec, Anne-marie.
Les éléments nutritifs (N-NH4 +, N-N02-, N-NO3, P-PO4 3- et Si-Si(OH) 4) et la matière organique dissoute (COD, NOD, POD, urée, amines primaires libres) mesures en septembre 1984 en Méditerranee nord-occidentale sont interprétés en fonction de l'hydrologie. Les résurgences d'eaux subsuperficielles influencent plus les concentrations des éléments nutritifs que celles de la matière organique. La composition globale (en C, N et P) de la matière organique a pu être donnée : on note des différences entre les masses d'eau.
Tipo: Text
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00082/19288/16883.pdf
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Influence of sex, maturity and reproduction on PCB and p,p ' DDE concentrations and repartitions in the European hake (Merluccius merluccius, L.) from the Gulf of Lions (NW Mediterranean) ArchiMer
Bodiguel, Xavier; Loizeau, Veronique; Le Guellec, Anne-marie; Roupsard, Francois; Philippon, Xavier; Mellon-duval, Capucine.
The main objective of this work was to establish the influence of sex, maturity and reproduction on the contamination of the demersal fish Merluccius merluccius by organochlorine compounds. Polychlorinated biphenyls (PCBs) and p,p'DDE were quantified in muscle, liver and gonads of female and male hakes collected in the Gulf of Lions in 2004 and 2005. Observed levels appeared higher than the population of the Bay of Biscay and lower than the population of the Thyrrenian Sea. Contaminant fingerprints were roughly constant whatever the studied organ and the hake biological condition. Concentrations varied significantly according to the sex and maturity of hakes. Mature specimens were more contaminated than immature, and males presented higher levels than...
Tipo: Text Palavras-chave: Bioaccumulation PCBs p; P ' DDE Merluccius merluccius Demersal fish Mediterranean Sea.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00000/11129/9317.pdf
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Modelling growth and bioaccumulation of Polychlorinated biphenyls in common sole (Solea solea) ArchiMer
Eichinger, Marie; Loizeau, Veronique; Roupsard, Francois; Le Guellec, Anne-marie; Bacher, Cedric.
Experiments were performed on juvenile sole in controlled conditions in the aim of understanding how the biology of common sole may affect the accumulation and dilution of Polychlorinated biphenyls (PCBs). The fish were raised in optimal conditions and divided into two tanks: one control tank and one PCB tank. 4 PCB congeners were added to food for 3 months in the PCB tank; the soles were subsequently fed unspiked food for 3 months. Growth (length and weight) and PCB concentrations were monitored in both tanks and juvenile sole growth was not significantly affected by PCBs in our experimental conditions. We used the Dynamic Energy Budget (DEB) theory to model sole biology and paid special attention to model calibration through the wide use of data from the...
Tipo: Text Palavras-chave: Solea solea; Polychlorinated Biphenyls; Growth Model; Bioaccumulation Model; DEB Theory.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00012/12299/9257.pdf
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Organochlorinated contaminants in decapod crustaceans from the coasts of Brittany and Normandy (France) ArchiMer
Bodin, Nathalie; Abarnou, Alain; Le Guellec, Anne-marie; Loizeau, Veronique; Philippon, Xavier.
The contamination and distribution of organ ochlorinated compounds were considered in three crustacean species (edible crab, Cancer pagurus; spider crab, Maja brachydactyla; velvet swimming crab, Necora puber) from five sites along the coasts of Brittany and Normandy (Western and North-Western France). PCBs (16 single congeners), pp'-DDE and HCB were measured in hepatopancreas, gonads and muscle: in all, 175 samples were analysed. The spider crab was the only species found in the five sampling sites, thus enabling comparison between areas. Specimens from Antifer were much more contaminated (Sigma(16)PCBs in hepatopancreas = 2000-4000 ng g(-1) dry weight) than those from other sites (50-1000 ng g(-1) d.w.). Among all the three species, the spider crab...
Tipo: Text Palavras-chave: Human diet; France; Brittany; Normandy; Crustaceans; Polychlorobiphenyls.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2594.pdf
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PCB, PCDD/F and PBDE levels and profiles in crustaceans from the coastal waters of Brittany and Normandy (France) ArchiMer
Bodin, Nathalie; Abarnou, Alain; Fraisse, D; Defour, S; Loizeau, Veronique; Le Guellec, Anne-marie; Philippon, Xavier.
Polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were analysed in the muscle of various edible marine crustaceans (spider crab, edible crab, velvet swimming crab and Norway lobster) from the Brittany and Normandy coasts (France). The highest concentrations were measured in species collected from Antifer (Seine Bay). PCB and PBDE patterns in crustacean muscles were similar and independent of the geographical area with the predominance of the high chlorinated PCBs (CB 15 3, 138, 118 and 180), and of a few PBDE congeners (BDE47, BDE99, WE 100 and BDE28). Oppositely, dioxin contamination differed with site. The major component in crustaceans from the Seine Bay was...
Tipo: Text Palavras-chave: France; Food safety; Metabolisation; Decapod crustaceans; PBDEs; PCDD/Fs; PCBs.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2685.pdf
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Rejets urbains en milieu cotier Composition des effluents urbains éléments nutritifs et matière organique Application au site de Toulon-Est ArchiMer
Aminot, Alain; Kerouel, Roger; Le Guellec, Anne-marie; Bodennec, Guy; Quemeneur, Michelle; Marty, Yanic.
Ce travail est effectué dans le cadre du programme général concernant l'étude des rejets urbains en mer, sous la responsabilité de Jean-François GUILLAUD. Il constitue, dans ce programme, le premier volet de l'étude des paramètres entrant dans la chimie des cycles naturels, par la recherche d'une définition aussi précise que possible de la composition des effluents urbains brut et épuré et de leur évolution journalière.
Tipo: Text
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00082/19295/16890.pdf
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Suivi à long terme des apports de matières organiques et nutritives par les effluents urbains de Morlaix ArchiMer
Aminot, Alain; Guillaud, Jean-francois; Le Guellec, Anne-marie.
La qualité des effluents de la station d'épuration de Morlaix a été suivie pendant six mois. Les rendements ont été évalués et comparés à ceux observés précédemment avant réfection du réseau de collecte. Les flux sont comparés à ceux de la rivière en période pluvieuse et en période sèche.
Tipo: Text
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00080/19135/16730.pdf
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Variablility of stable isotope signatures (delta C-13 and delta N-15) in two spider crab populations (Maja brachydactyla) in Western Europe ArchiMer
Bodin, Nathalie; Le Loch, Francois; Hily, Christian; Caisey, Xavier; Latrouite, Daniel; Le Guellec, Anne-marie.
The ontogenic variations of nitrogen and carbon stable isotopic signatures (delta N-15 and delta C-13) were investigated in two spider crab (Maja brachydactyla) populations inhabiting in different biotopes of Western Europe. The Iroise Sea population is localized in Western Brittany and characterized by a seasonal migration occurring on a large bathymetric and habitat gradient while the Seine Bay population, in the Eastern English Channel, remains in a more homogeneous environment during its migration. In the Iroise Sea population, delta C-13 Values increased significantly both with body size and age, revealing a shift towards "benthic-component" prey with spider crab growth. On the contrary, neither body size nor ageing gave rise to a significant trophic...
Tipo: Text Palavras-chave: Migration; Marine decapod crustaceans; Growth; Feeding; Carbon and nitrogen stable isotopes.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2535.pdf
Registros recuperados: 12
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