Consulta: subjectFacets:"Bioaccumulation"
Registros recuperados: 79
Data/hora: 01/06/2024 00:54:17

Selenium biofortification on garlic growth and other nutrients accumulation
Provedor de dados: Horticultura Brasileira
Autores: Pérez,María B; Lipinski,Víctor Mario; Filippini,María Flavia; Chacón-Madrid,Katherine; Arruda,Marco Aurelio Z; Wuilloud,Rodolfo G.
ABSTRACT Selenium (Se) is an essential element for humans and has anti-cancer function. Garlic can accumulate Se, so it is an option to Se supplementation in the human diet. The aim of this research was to study Se uptake and accumulation during garlic growth. Four doses of Na2SeO4 and Na2SeO3 solution were applied in the substrate (0, 5, 10 and 15 kg ha-1 Se) for one time in August 2014, with a random plot design and 3 replicates on garlic clone Rubi INTA. Three harvests were made, in September, October and December 2014. After each harvest, leaves, bulbs and roots were separated and conditioned (peeled and chopped), lyophilized, and finally acid-digested prior to Se, Mg, Zn, Mn, Cu, Fe, P and S determination by inductively coupled plasma mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium gender sativum; Selenium uptake; Bioaccumulation; Enriched crop.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300294

Paralytic phycotoxin uptake by scallops (Pecten maximus)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lassus, Patrick; Bardouil, Michele; Ledoux, Martial; Murail, Ingrid; Bohec, Madeleine; Truquet, Philippe; Frémy, Jean-marc; Rohmer, Véronique.
It is difficult to apply sanitary standards for mollusc contamination by paralytic shellfish poisoning to animals not consumed whole. This problem is illustrated by the 1990 embargo on a Japanese shipment of frozen scallop muscle and gonad: the sanitary threshold applied to digestive gland (in Japan) does not guarantee that muscle and especially gonad are toxin-free. Accordingly, we performed experimental contaminations of scallops (Pecten maximus) from Port-en-Bessin (Normandy, France) using a toxic Japanese strain of Alexandrium tamarense. During the contamination/decontamination experiment on different tissues (digestive gland, muscle, gonad), extracts were obtained using cold acetic acid 0.1 N to maintain the perfect integrity of the toxin profile....
Tipo: Text
Palavras-chave: Alexandrium tamarense; Phycotoxines; Bioaccumulation; Profils toxiniques; Pecten maximus; Patinopecten yessoensis; Alexandrium tamarense; Phycotoxins; Bioaccumulation; Toxin profiles; Patinopecten yessoensis; Pecten maximus.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00189/30075/28563.pdf

Past and present platinum contamination of a major European fluvial-estuarine system: Insights from river sediments and estuarine oysters
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Abdou, M.; Schaefer, J.; Cobelo-garcia, A.; Neira, P.; Petit, J. C. J.; Auger, Dominique; Chiffoleau, Jean-francois; Blanc, Gerard.
Platinum Group Metals (PGM) are modern, technologically relevant elements for which (i) the anthropogenic cycle has outcompeted the natural cycles and (ii) environmental behavior, fate and impact are still widely unknown. Stripping voltammetry was used for accurate determinations of platinum (Pt) in historical records of river sediments and estuarine oysters from the Gironde fluvial-estuarine continuum (SW France) comprising the Lot River. Sediment cores from the Lot River, dated from 1952 to 2001, showed past Pt contamination due to former industrial (smelter) activities in the Lot River watershed. These samples revealed the phasing-out of a historical Pt contamination with Pt/Th (Thorium) values of 11 × 10− 5 ± 0.79 × 10− 5 for the deepest part of the...
Tipo: Text
Palavras-chave: Platinum; Sediments; Wild oysters; Bioaccumulation.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00311/42177/41478.pdf

Use of rotavirus virus-like particles as surrogates to evaluate virus persistence in shellfish
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Loisy, Fabienne; Atmar, R; Le Saux, Jean-claude; Cohen, J; Caprais, Marie-paule; Pommepuy, Monique; Le Guyader, Soizick.
Rotavirus virus-like particles (VLPs) and MS2 bacteriophages were bioaccumulated in bivalve mollusks to evaluate viral persistence in shellfish during depuration and relaying under natural conditions. Using this nonpathogenic surrogate virus, we were able to demonstrate that about 1 log(10) of VLPs was depurated after 1 week in warm seawater (22 degrees C). Phage MS2 was depurated more rapidly (about 2 log(10) in 1 week) than were VLPs, as determined using a single-compartment model and linear regression analysis. After being relayed in the estuary under the influence of the tides, VLPs were detected in oysters for up to 82 days following seeding with high levels of VLPs (concentration range between 10(10) and 10(9) particles per g of pancreatic tissue)...
Tipo: Text
Palavras-chave: Seawater; Viral diseases; Bioaccumulation; Depuration; Contamination; Model; Pancreas; Regression analysis; Shellfish; Phages; Virus.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-1233.pdf

Milieu vivant: Synthese des discussions
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Retiere, C.
After a general note the author reports the effects of pollutants in organisms, in particular, sublethal effects and bioaccumulation.
Tipo: Text
Palavras-chave: Estuarine organisms; Sublethal effects; Environmental impact; Estuaries; Bioaccumulation; Pollution effects; Brackishwater pollution.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1311.pdf

Biological availability of sediment-bound trace metals.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Luoma, S.
It has been established that direct uptake of (at least some) trace metals from sediments contributes to metal concentrations in benthic organisms. Important controls on metal uptake from sediment are the concentration of the exposure, the partitioning of the metals among components of the sediment, and the redox potential of the sediment. Important problems in ecology, physiology, geochemistry and biogeochemistry remain unresolved, however, and a concentrated interdisciplinary research effort will be necessary before a complete understanding of the fate and impact of sediment-bound metals will be possible.
Tipo: Text
Palavras-chave: Bioaccumulation; Benthos; Food webs; Biogeochemical cycle; Sediments; Availability; Trace metals.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1302.pdf

Modeling trace metal accumulation in the mediterranean mussel, mytilus galloprovincialis
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Casas, Stellio; Cossa, Daniel; Gonzalez, Jean-louis; Bacher, Cedric; Andral, Bruno.
Monitoring coastal contamination by trace metals pollution using mollusks bivalves as quantitative bioindicators is widely performed in many international biomonitoring programs. In this purpose, modeling metal dynamic in marine mussels is a reliable tool. It allows understanding the bioaccumulation process which results from the interactions between biological, chemical and environmental factors. To calibrate such a model, kinetic experiments on uptake and elimination were conducted on three Mediterranean sites chosen on the basis of their different nutritive and chemical characteristics.
Tipo: Text
Palavras-chave: Growth; Heavy metals; Bioaccumulation; Mytilus galloprovincialis; Bioindicator.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/acte-370.pdf

La Baie de Seine: Peuplements et especes benthiques en regime perturbe
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cabioch, L; Retiere, C.
The waters of the Seine River are polluted by urban, industrial and agricultural effluents. In addition direct industrial wastes inputs are emptied into the estuary. Within the limits of the Seine Bay program it was not possible to research pollution impacts on every estuarine ecosystem link; so only benthos have been studied. To take time response of organisms into account, the authors have defined indicators or quantitative evaluation of parameters, reflecting physiological state. They have studied population fluctuations caused by natural or man induced effects.
Tipo: Text
Palavras-chave: Hydrodynamics; Population dynamics; Population structure; Bioaccumulation; Pollution effects; Marine pollution; Ecosystem disturbance; Benthos.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1304.pdf

Campagne de surveillance DCE 2015 en Méditerranée française. Districts « RHONE ET COTIERS MEDITERRANEENS » ET « CORSE »
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Witkowski, Fanny; Andral, Bruno; Derolez, Valerie; Tomasino, Corinne.
Sur la façade méditerranéenne, l'Ifremer a assuré en 2015 une partie logistique de la quatrième campagne du contrôle de surveillance DCE et la coordination de la caractérisation de plusieurs éléments de qualité. Les résultats de la quatrième campagne de contrôles de surveillance DCE permettent de caractériser la qualité de 45 masses d’eau littorales suivies en 2015. Dans le district « Rhône et côtiers méditerranéens » (volet 1), 3 des 18 masses d’eau côtières (MEC) sont déclassées pour la chimie au regard des résultats acquis dans la matière vivante, tandis que l'ensemble des MEC suivies pour le phytoplancton affichent un bon état. Dans les masses d’eau de transition (MET), la chimie matière vivante déclasse 7 MET, le suivi dans l'eau (échantillonneurs...
Tipo: Text
Palavras-chave: Surveillance; Phytoplancton; Macrophytes; Substances prioritaires; Bioaccumulation; État biologique; État chimique; Eaux côtières; Eaux de transition.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00394/50583/51272.pdf

Variation of heavy metal concentrations (Ag, Cd, Co, Cu, Fe, Pb, V, and Zn) during the life cycle of the common cuttlefish Sepia officinalis
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Miramand, Pierre; Bustamante, Paco; Bentley, Daniel; Koueta, Noussithe.
The developmental changes in the concentration of 8 essential and non-essential heavy metals (Ag, Cd, Cu, Co, Fe, Pb, V, Zn) in the tissues (digestive gland, cuttlebone and whole animal) of the common cuttlefish Sepia officinalis collected in the bay of the river Seine were monitored from the end of the embryogenesis until the adult reproductive stage. Compared to embryos, juveniles after hatching displayed much higher concentrations of Ag, Cu, Fe and Zn, suggesting an efficient incorporation from seawater. Conversely, the amounts of Cd, Pb and V in hatchlings remained constant suggesting that these metals are barely bioavailable for juveniles. Once the juveniles start to feed, the digestive gland appears to play a major role in the storage of all metals....
Tipo: Text
Palavras-chave: Embryogenesis; Sexual maturity; Cephalopods; Detoxification; Bioaccumulation; Trace element.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2330.pdf

Impact of chronic cadmium exposure at environmental dose on escape behaviour in sea bass (Dicentrarchus labrax L.; Teleostei, Moronidae)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Faucher, Karine; Fichet, Denis; Miramand, Pierre; Lagardere, Jean-paul.
The effect of chronic exposure to a low concentration (0.5 mu g l(-1)) of cadmium ions was investigated on escape behaviour of sea bass, Dicentrarchus labrax, using video analysis. Observations were also performed on the microanatomy of lateral system neuromasts. When fish were exposed for 4 h per day over 8 days to the cadmium ions, most of both types of neuromasts observed remained intact. However, some of them presented damaged sensory maculae. Whereas before cadmium exposure, fish responded positively to nearly all the lateral system stimulations, after exposure they decreased by about 10% their positive responses to Stimulations. From the 15th day after the beginning of cadmium exposure, neuromasts presented progressively less damage, cadmium...
Tipo: Text
Palavras-chave: Bioaccumulation; Escape behaviour; Chronic cadmium exposure; Neuromast; Fish lateral system.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-3939.pdf

Spatial variation of metal bioaccumulation in the hydrothermal vent mussel Bathymodiolus azoricus
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cosson, R; Thiebaut, E; Company, R; Castrec Rouelle, M; Colaco, A; Martins, I; Sarradin, Pierre-marie; Bebianno, M.
The variability of the bioaccumulation of metals (Ag, Cd, Cu, Fe, Mn and Zn) was extensively studied in the mussel Bathymodiolus azoricus from five hydrothermal vent sites inside three main vent fields of increasing depth along the Mid-Atlantic Ridge: Menez Gwen, Lucky Strike and Rainbow. Metal bioaccumulation varied greatly between vent fields and even between sites inside a vent field with B. azoricus showing a great capacity to accumulate metals. The bioaccumulation of these metals also varied significantly among tissues. The main target was the gills where metals were mainly associated with soluble compounds whereas in the digestive gland they were mainly associated with insoluble compounds. Storage of metals under insoluble forms in B. azoricus seems...
Tipo: Text
Palavras-chave: Bathymodiolus; Mytilids; Hydrothermal vents; Azores; Metals; Bioaccumulation.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-3954.pdf

Improving detoxification Efficiency of PSP-contaminated oysters (Crassostrea gigas Thunberg)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lassus, Patrick; Bardouil, Michele; Baron, Regis; Berard, Jean-baptiste; Masselin, Pierre; Truquet, Philippe; Pitrat, Jp.
Shellfish production, and production of marine bivalve molluscs in particular, is the main form of marine aquaculture in the European Union, with a production estimated at 1,200,000 tons in 1999 (Food and Agricultural Organization). Moreover, aquaculture production is rapidly expanding throughout Europe and is becoming a major economic resource in developing areas such as Northern Greece, Ireland, and northwestern Spain. These shellfish, mainly mussels, oysters, and clams, are produced in a natural environment. Due to variations in their environment, these otherwise edible species may however become unsafe for human consumption. Potential problems are amplified due to the nature of shellfish themselves: as they are filter feeders, they consume large...
Tipo: Text
Palavras-chave: Detoxification; PSP toxin; Toxic algae; Bioaccumulation; Contaminant; Clam; Mussel; Oyster; Shellfish culture.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-2271.pdf

Oligotrophy as a major driver of mercury bioaccumulation in medium-to high-trophic level consumers: A marine ecosystem-comparative study
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Chouvelon, Tiphaine; Cresson, Pierre; Bouchoucha, Marc; Brach-papa, Christophe; Bustamante, Paco; Crochet, Sylvette; Marco-miralles, Francoise; Thomas, Bastien; Knoery, Joel.
Mercury (Hg) is a global contaminant of environmental concern. Numerous factors influencing its bioaccumulation in marine organisms have already been described at both individual and species levels (e.g., size or age, habitat, trophic level). However, few studies have compared the trophic characteristics of ecosystems to explain underlying mechanisms of differences in Hg bioaccumulation and biomagnification among food webs and systems. The present study aimed at investigating the potential primary role of the trophic status of systems on Hg bioaccumulation and biomagnification in temperate marine food webs, as shown by their medium-to high-trophic level consumers. It used data from samples collected at the shelf-edge (i.e. offshore organisms) in two...
Tipo: Text
Palavras-chave: Biomagnifying metal; Bioaccumulation; Trophic status; Ecosystem productivity; Temperate systems.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00410/52111/52936.pdf

Editorial: New Challenges in Marine Pollution Monitoring
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bellas, Juan; Hylland, Ketil; Burgeot, Thierry.
Tipo: Text
Palavras-chave: Marine pollution; Ecotoxicology; Biomonitoring; Water quality; Bioaccumulation.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71775/70269.pdf

Réseaux de surveillance DCE - Campagne 2012 – District « Rhône et côtiers méditerranéens »
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Sargian, Peggy; Andral, Bruno; Derolez, Valerie.
Les programmes de surveillance liés à la mise en œuvre de la DCE sont coordonnés par le Ministère de l’Ecologie, du Développement Durable, des Transports et du Logement (MEDDTL). Dans chaque bassin hydrographique ce sont les Agences de l’eau qui, avec l’Etat, prennent en charge l’application, la mise en œuvre de ces réseaux.  Sur la façade méditerranéenne, Ifremer a assuré pour le compte du Schéma Directeur des Données sur l’Eau la maîtrise d’ouvrage de la troisième campagne du contrôle de surveillance, en coordonnant l’ensemble de l’acquisition des données et de leur synthèse en collaboration avec de nombreux partenaires : les Universités, des bureaux d’études, des structures locales de gestion et les services de l’Etat.   Les résultats de cette troisième...
Tipo: Text
Palavras-chave: Surveillance; Phytoplancton; Benthos de substrat meuble; Posidonie; Macrophytes; Macroalgues; Substances prioritaires; Bioaccumulation; État biologique; État chimique; État écologique.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00170/28133/26353.pdf

Caractérisation et modélisation des processus de bioaccumulation des PCB chez le merlu (Merluccius merluccius) du golfe du Lion
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bodiguel, Xavier.
Understanding bioaccumulation mechanisms of persistent organic pollutants (POPs) is a major issue for environmental risk assessment. In this work, polychlorinated biphenyls (PCBs), a model contaminant family, has been studied in the European hake (Merluccius merluccius), a high trophic level species from the Gulf of Lions. High concentrations of PCBs were measured in hake from this area compared to those encountered in the population of the Bay of Biscay. PCB biomagnification was highlighted along its food web from marine phytoplankton, suggesting a strong influence of diet on contamination levels. The role of other biological processes was also apprehended in order to understand the high variability of observed levels. Thus, growth, sex, and also the...
Tipo: Text
Palavras-chave: DEB theory; Bioenergetic model; Gulf of Lions; Biomagnification; Food web; Hake; Bioaccumulation; Polychlorinated biphenyls; Organic contaminants; Théorie DEB; Modèle bioenergétique; Golfe du Lion; Bioamplification; Réseau trophique; Merlu; Bioaccumulation; Polychlorobiphényles; Contaminants organiques.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/these-6490.pdf

Modélisation de la bioaccumulation de métaux traces (Hg, Cd, Pb, Cu et Zn) chez la moule, Mytilus galloprovincialis, en milieu méditerranéen
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Casas, Stellio.
Monitoring coastal contamination of trace metals using bivalve molluscs as quantitative bioindicators is widely used in many international monitoring programs. The bioaccumulation of metal within an organism results from the interaction between physiological (growth, loss of weight, absorption, accumulation), chemical (metal concentration, speciation, bioavailability) and environmental factors (temperature, SPM, chlorophyll). By utilizing the parameters above in this study, it appears that modeling metal dynamics in marine mussels is a reliable tool. The model allows understanding the bioaccumulation process which results from the interactions between biological, chemical and environmental factors. One of the objective of this study was to couple a...
Tipo: Text
Palavras-chave: Biomonitoring; Dynamic Energy Budget; Model; Trace metals; Bioaccumulation; Mytilus galloprovincialis; Mussel; Bioindicator; Surveillance; Budget énergétique dynamique; Modèle; Métaux traces; Bioaccumulation; Mytilus galloprovincialis; Moule; Bioindicateur.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-356.pdf

Trace metal concentrations in the muscle of seven marine species: Comparison between the Gulf of Lions (North-West Mediterranean Sea) and the Bay of Biscay (North-East Atlantic Ocean)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mille, Tiphaine; Cresson, Pierre; Chouvelon, Tiphaine; Bustamante, Paco; Brach-papa, Christophe; Bruzac, Sandrine; Rozuel, Emmanuelle; Bouchoucha, Marc.
Concentrations of 6 trace metals (Ag, Cd, Cu, Ni, Pb, Zn) in the muscle of 2 sharks (Galeus melastomus and Scyliorhinus canicula), 4 teleosts (Helicolenus dactylopterus, Lepidorhombus boscii, Micromesistius poutassou and Phycis blennoides) and 1 crustacean (Nephrops norvegicus) were compared between the Bay of Biscay (Atlantic Ocean) and the Gulf of Lions (Mediterranean Sea). Although average concentrations and the trace element pollution index were generally higher in the Gulf of Lions, significant differences between the two ecosystems were only found for Zn for Helicolenus dactylopterus, and for Ag and Cu for the crustacean N. norvegicus. Moreover, some relationships between trophic level or size and metal concentrations were found for these two...
Tipo: Text
Palavras-chave: Inorganic elements; Contamination; Bioaccumulation; Fish; Shark; Norway lobster.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00448/55958/57497.pdf

Analyse et comparaison des niveaux de contamination en Polychlorobiphényles et pesticides organochlorés dans les foies de juvéniles de soles provenant de nourriceries du Golfe de Gascogne, de la Baie de Seine et de la Somme
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Jegaden, Marine.
Ce rapport de stage (2 mois et demi) traite du dosage de contaminants organiques, les Polychlorobiphényles (PCB) et les pesticides organochlorés chez les juvéniles de soles, dans différentes zones côtières de nourriceries sur le littoral français en Manche Est et dans le Golfe de Gascogne. Ces composés, hydrophobes, persistants et potentiellement bioaccumulables, se trouvent concentrés dans les tissus des poissons et en particulier dans le foie, riche en lipides. Les 16 congénères de PCB et les pesticides organochlorés sont dosés selon un protocole comprenant trois étapes : l'extraction, la purification par chromatographie d'adsorption pour séparer les composés, puis la quantification par chromatographie en phase gazeuse munie d'un détecteur à capture...
Tipo: Text
Palavras-chave: Soles; Nourriceries; PCB; Pesticides organochlorés; Bioaccumulation; Métabolisation; Réseau National d'Observation.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00444/55522/57110.pdf

Efflorescences toxiques des eaux côtières françaises. Ecologie, écophysiologie, toxicologie
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Berland, Brigitte; Lassus, Patrick.
Tandis que certa ines efflorescences micro-algales provoquent de sérieuses nuisances par leur développement exubérant, d'autres sont nocives en raison des toxines qu'elles produisent. Ces proliférations,  dangereuses pour les organismes marins, mais aussi pour les consommateurs de fruits de mer, sont étudiées en France depuis 1983. Dès 1989, devant l'ampleur des phénomènes observés au niveau national et européen, un programme scientifique réunissant de nombreux in stituts et laboratoires, le PNEAT, a été créé afin de fédérer les moyens mis en oeuvre dans des disci plines aussi diverses que l'écologie, la biologie cellulaire, l'écophysiologie, la toxicologie et la chimie. Les résultats obtenus au cours de la période 1989-1995 sont présentés à la fois pour...
Tipo: Text
Palavras-chave: Efflorescences; Cycle biologique; Allélopathie; Taxonomie; Ecophysiologie; Broutage; Phycotoxines; Toxicologie; Chimie extractive; Toxinogenèse; Bioaccumulation.
Ano: 1997
URL: https://archimer.ifremer.fr/doc/00450/56179/57726.pdf

Bioaccumulation des métaux chez le mytilidae hydrothermal Bathymodiolus sp. de la ride médio-atlantique
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Rousse, N; Boulegue, J; Cosson, Rp; Fiala-medioni, A.
The hydrothermal environment is characterised, among other things, by a high metal concentration, related to the convective sea-water circulation inside the oceanic crust and its interaction with basaltic rocks. The biological communities associated with the hydrothermal system can survive in this toxic environment owing to their ability to regulate their intracellular metal levels by excretion or accumulation of metal ions in non-toxic forms. Various detoxification processes have been previously studied within an hydrothermal organism: immobilisation and precipitation of the metal in lysosomal systems, or binding to specific and soluble ligands such as metallothioneins. The later are heat stable and characterised by a high content of cysteine. The...
Tipo: Text
Palavras-chave: Bio-accumulation; Métallothionéines; Lysosomes; Toxicité; Hydrothermal; Bioaccumulation; Metallothioneins; Lysosomes; Toxicity; Hydrothermal.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00325/43662/43238.pdf

Contamination de l'estuaire et de la baie de Seine par le PCB-Bilan des etudes
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Abarnou, Alain; Simon, S.
This report is a synthesis of data concerning PCB concentrations in water, sediments and organisms (Bivalvia, Malacostraca, Pisces). Water analysis shows that Seine River is the primordial factor affecting PCB dispersion in the bay. Sediment contamination is higher near estuary along Calvados coast. PCB levels in Mytilidae and in Pectinidae set the problem of polluant origin, dispersion and effects on estuarine organisms.
Tipo: Text
Palavras-chave: Bioaccumulation; Sediment pollution; Water pollution; PCB; Environmental impact.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1319.pdf

Réseaux de surveillance DCE – Campagne 2012 – District « Corse »
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Sargian, Peggy; Andral, Bruno; Derolez, Valerie.
Les programmes de surveillance liés à la mise en œuvre de la DCE sont coordonnés par le Ministère de l’Ecologie, du Développement Durable, des Transports et du Logement (MEDDTL). Dans chaque bassin hydrographique ce sont les Agences de l’eau qui, avec l’Etat, prennent en charge l’application, la mise en œuvre de ces réseaux.  Sur la façade méditerranéenne, Ifremer a assuré pour le compte du Schéma Directeur des Données sur l’Eau la maîtrise d’ouvrage de la troisième campagne du contrôle de surveillance, en coordonnant l’ensemble de l’acquisition des données et de leur synthèse en collaboration avec de nombreux partenaires : les Universités, des bureaux d’études, des structures locales de gestion et les services de l’Etat.   Les résultats de cette troisième...
Tipo: Text
Palavras-chave: Surveillance; Phytoplancton; Benthos de substrat meuble; Posidonie; Macrophytes; Macroalgues; Substances prioritaires; Bioaccumulation; État biologique; État chimique; État écologique.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00170/28134/26354.pdf

Bioavailability of particulate metal to zebra mussels: Biodynamic modelling shows that assimilation efficiencies are site-specific
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bourgeault, Adeline; Gourlay-france, Catherine; Priadi, Cindy; Ayrault, Sophie; Tusseau-vuillemin, Marie-helene.
This study investigates the ability of the biodynamic model to predict the trophic bioaccumulation of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) in a freshwater bivalve. Zebra mussels were transplanted to three sites along the Seine River (France) and collected monthly for 11 months. Measurements of the metal body burdens in mussels were compared with the predictions from the biodynamic model. The exchangeable fraction of metal particles did not account for the bioavailability of particulate metals, since it did not capture the differences between sites. The assimilation efficiency (AE) parameter is necessary to take into account biotic factors influencing particulate metal bioavailability. The biodynamic model, applied with AEs...
Tipo: Text
Palavras-chave: Bioaccumulation; Active biomonitoring; Bioavailability of particulate metals; Assimilation efficiency; Chemical sequential extraction.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00051/16218/14040.pdf

Mercury in seabird feathers: Insight on dietary habits and evidence for exposure levels in the western Indian Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Kojadinovic, Jessica; Bustamante, Paco; Churlaud, Carine; Cosson, Richard P.; Le Corre, Matthieu.
Breast feathers were used to estimate mercury levels in six marine birds nesting in the tropical western Indian Ocean, i.e. Sooty Tern (Sterna fuscata), Brown Noddy (Anous stolidus), Lesser Noddy (Anous tenuirostris), Audubon Shearwater (Puffinus lherminieri bailloni), Barau's Petrel (Pterodroma baraui) and the White-tailed Tropicbird (Phaethon lepturus). Juveniles consistently showed lower plumage mercury than adults. The lowest mean level was noted in juvenile Sooty Terns from the Glorioso Archipelago (0.05 mu g g(-1)). The highest levels were obtained for adult Barau's Petrels from Reunion Island (0.96 mu g g(-1)). An inter-site analysis of Sooty Tern showed higher mercury levels in birds nesting on Juan de Nova Island. Levels were low in comparison...
Tipo: Text
Palavras-chave: Tropical islands; Contamination; Bioaccumulation; Mercury; Trophic ecology; Marine birds.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3416.pdf

Comparative study of potential transfer of natural and anthropogenic cadmium to plankton communities in the North-West African upwelling
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Auger, Pierre-amael; Machu, Eric; Gorgues, Thomas; Grima, Nicolas; Waeles, Mathieu.
A Lagrangian approach based on a physical-biogeochemical modeling was used to compare the potential transfer of cadmium (Cd) from natural and anthropogenic sources to plankton communities (Cd-uptake) in the NorthWest African upwelling. In this region, coastal upwelling was estimated to be the main natural source of Cd while the most significant anthropogenic source for marine ecosystem is provided by phosphate industry. In our model experiment, Cd-uptake (natural or anthropogenic) in the North-West African upwelling is the result of an interplay between the Cd dispersion (by advection processes) and the simulated biological productivity. In the Moroccan waters, advection processes limit the residence time of water masses resulting in a low natural...
Tipo: Text
Palavras-chave: Cadmium; North-West African upwelling; Phosphate industry; Dispersion; Bioaccumulation; Plankton ecosystem.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00252/36310/35200.pdf

Interet de la microscopie analytique pour l''etude d''impact de metaux traces et de terres rares sur le milieu vivant. Application a l''etude d''une zone polluee: La Baie de Seine
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Chassard Bouchaud, C; Noel, Philippe; Hubert, M; Hallegot, P.
To study bioaccumulation and metabolism of trace metals (silver-lead-copper-iron-uranium) and rare earths (lanthanium) in estuarine organisms (Crangon crangon, Mytilus edulis, Abra Alba, Cutellus pellucidus, Owenia furiformis ) the authors use in situ microanalysis associated with electronic or photonic microscopy.
Tipo: Text
Palavras-chave: Rare earths; Trace metals; Bioaccumulation; Pollution effects; Microscopy.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1305.pdf

Dietary exposure of juvenile common sole (Solea solea L.) to polybrominated diphenyl ethers (PBDEs): Part 2. Formation, bioaccumulation and elimination of hydroxylated metabolites
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Munschy, Catherine; Moisan, Karine; Tixier, Celine; Pacepavicius, G.; Alaee, M.
The uptake, elimination and transformation of six PBDE congeners (BDE-28, -47, -99, -100, -153, -209) were studied in juvenile common sole (Solea solea L) exposed to spiked contaminated food over a three-month period, and then depurated over a five-month period. Methoxylated (MeO-) and hydroxylated (OH-) PBDEs were determined in fish plasma exposed to PBDEs and compared to those obtained in control fish. While all MeO- and some OH- congeners identified in fish plasma were found to originate from non-metabolic sources, several OH- congeners, i.e., OH-tetraBDEs and OH-pentaBDEs, were found to originate from fish metabolism. Among these, 4 '-OH-BDE-49 was identified as a BDE-47 metabolite. Congener 4 '-OH-BDE-101, identified here for the first time, may be...
Tipo: Text
Palavras-chave: Marine flatfish; PBDEs; Bioaccumulation; Biotransformation; Hydroxylated metabolites.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00017/12811/11295.pdf

Organochlorinated pesticides, PCBs, dioxins, and PBDEs in grey mullets (Liza ramada) and allis shads (Alosa alosa) from the Vilaine estuary (France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bocquene, Gilles; Abarnou, Alain.
This study aimed to compare the contamination levels of various organohalogenated compounds in two migratory fish species in the Vilaine River in western France. Organochlorinated pesticides, polychlorinated biphenyls (PCBs), dioxins (polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDDs/Fs)), and polybrominated diphenyl ethers (PBDEs) were analyzed in two diadromous species from the Vilaine estuary, the grey mullet (Liza ramada)-an amphihaline species, and the allis shad (Alosa alosa)-an anadromous species. Fish were collected in spring 2004 and spring 2005, upstream and downstream of the Arzal Dam. PCB contamination varied from 27 to 200 ng g(-1) dry weight (d.w.). PCDDs/Fs, expressed in toxicity equivalent quantity (TEQ) varied from 0.4 to 2.8 pg g(-1)...
Tipo: Text
Palavras-chave: Vilaine estuary; Organohalogenated contaminants; PCBs; DDT; Dioxins; Shad; Grey mullet; Bioaccumulation.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00124/23572/21468.pdf

Metal bioaccumulation and physiological condition of the Pacific oyster (Crassostrea gigas) reared in two shellfish basins and a marina in Normandy (northwest France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Seguin, A.; Caplat, C.; Serpentini, A.; Lebel, J. M.; Menet-nedelec, Florence; Costil, K.
A 5-month experiment combining a geochemical survey of metals with a bioaccumulation study in batches of Crassostrea gigas was conducted in two shellfish farming areas and a marina in Normandy (France). Various endpoints at different levels of biological organization were studied. ROCCH data showed differences in biota contamination between the two shellfish areas but the present study revealed only slight differences in metallic contamination and biomarkers. By contrast, significantly different values were recorded in the marina in comparison with the two other sites. Indeed, higher levels of Cd, Cu and Zn were measured in the oysters from the marina, and these oysters also showed a poorer physiological condition (e.g., condition index, histopathological...
Tipo: Text
Palavras-chave: Crassostrea gigas; Metallic contamination; Bioaccumulation; Physiological condition; Oxidative stress; France.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00319/43053/42632.pdf

Total and organic Hg concentrations in cephalopods from the North Eastern Atlantic waters: Influence of geographical origin and feeding ecology
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bustamante, Paco; Lahaye, V; Durnez, C; Churlaud, C; Caurant, Florence.
Total (T-Hg) and organic (O-Hg) mercury concentrations and tissue distribution were examined in 20 species of cephalopods (n = 278) from the north eastern Atlantic waters, i.e. from the Bay of Biscay to the Faroe Islands. Concentrations of T-Hg in whole cephalopods showed elevated variations among species, i.e. from 40 to 3560ng g(-1) dwt, but a low variability within each species (mean CV%=39%). With the exception of oceanic squids, the digestive gland globally displayed higher T-Hg concentrations than the remaining tissues. In contrast, O-Hg concentrations determined in selected species were generally higher in the remaining tissues. Despite higher T-Hg concentrations, the digestive gland weakly contributed to the total body burden of both T-Hg and O-Hg...
Tipo: Text
Palavras-chave: Cuttlefish; Octopus; Squid; Body distribution; Speciation; Bioaccumulation.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1873.pdf

Norwalk virus-specific binding to oyster digestive tissues
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Le Guyader, Soizick; Loisy, Fabienne; Atmar, R; Hutson, A; Estes, M; Ruvoen-clouet, N; Pommepuy, Monique; Le Pendu, J.
The primary pathogens related to shellfishborne gastroenteritis outbreaks are noroviruses. These viruses show persistence in oysters, which suggests an active mechanism of virus concentration. We investigated whether Norwalk virus or viruslike particles bind specifically to oyster tissues after bioaccumulation or addition to tissue sections. Since noroviruses attach to carbohydrates of the histo-blood group family, tests using immunohistochemical analysis were performed to evaluate specific binding of virus or viruslike particles to oyster tissues through these ligands. Viral particles bind specifically to digestive ducts (midgut, main and secondary ducts, and tubules) by carbohydrate structures with a terminal N-acetylgalactosamine residue in an alpha...
Tipo: Text
Palavras-chave: Bioaccumulation; Shellfish; Escherichia coli; Pathogen; Oyster digestive tissue; Noroviruses.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1542.pdf

In situ kinetics of mercury bioaccumulation in mytilus galloprovincialis estimated by transplantation experiments
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Casas, Stellio; Cossa, Daniel; Gonzalez, Jean-louis; Bacher, Cedric; Andral, Bruno.
Monitoring coastal contamination by trace metals pollution using mollusks bivalves as quantitative bioindicators is widely performed in many international biomonitoring programs. For this purpose, studying mercury dynamic in marine mussels is a reliable tool. In situ experiments on uptake and elimination kinetics were conducted in three Mediterranean sites, chosen on the basis of their contamination levels. Mussels were transplanted from a clean area to a highly contaminated one and then transferred back to a clean site. This approach makes it possible to define bioaccumulation factors and uptake and elimination rates consistently with the real environmental conditions.
Tipo: Text
Palavras-chave: Transplantation; Heavy metals; Bioaccumulation; Mytilus galloprovincialis; Bioindicator.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/acte-369.pdf

Contamination chimique du milieu marin : de la mesure à l'évaluation des risques
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Abarnou, Alain.
This activity report entitled (“Chemical contamination of the marine environment: from measurement to risk assessment”) summarizes the main stages my career at Ifremer from November 1975 to june 2013. The first chapter deals with the seawater chlorination and chlorinated waters released into the sea, the identification and the conditions of the formation of various by-product of these processes. The second chapter concerns PCBs, their nature, their chemical analysis in environmental matrices. PCBs are considered as the best examples of persistant and bioaccumulable compounds and therefore, in all this report they are flagship contaminants to which other groups of studied substances are compared. The third chapter refers to studies performed within marine...
Tipo: Text
Palavras-chave: Chlore; Chloration de l’eau de mer; Oxydant; Bromoforme; Impact environnemental; Mécanismes réactionnels; Désinfection; Polluants organiques persistants (POP); PCB; Dioxines; HAP; PBDE; Chlordécone; Baie de Seine; Organismes marins; Moules; Poissons; Surveillance environnementale; Analyse; Bioaccumulation; Chlorine; Seawater chlorination; Oxidizing agent; Bromoform; Environmental impact; Reaction mechanisms; Disinfection; Persitsent organic pollutants (POPs); PCBs; Dioxins; PAHs; PBDEs; Chlordecone (kepone); Baie de Seine; Marine organisms; Mussel; Fish; Environmental monitoring; Chemical analysis; Bioaccumulation.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00168/27946/26237.pdf

Po-210 and Pb-210 in the tissues of the deep-sea hydrothermal vent mussel Bathymodiolus azoricus from the Menez Gwen field (Mid-Atlantic Ridge)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Charmasson, Sabine; Le Faouder, Antoine; Loyen, Jeanne; Cosson, Richard P.; Sarradin, Pierre-marie.
The hydrothermal deep-sea vent fauna is naturally exposed to a highly specific environment enriched in potentially toxic species such as sulfides, metals and natural radionuclides due to the convective seawater circulation inside the oceanic crust and its interaction with basaltic or ultramafic host rocks. However, data on radionuclides in biota from such environment are very limited. An investigation was carried out on tissue partitioning of Po-210 and Pb-210, two natural radionuclides within the U-238 decay chain, in Bathymodiolus azoricus specimens from the Mid-Atlantic Ridge (Menez Gwen field). These two elements showed different distributions with high Pb-210 levels in gills and high Po-210 levels in both gills and especially in the remaining parts of...
Tipo: Text
Palavras-chave: Po-210; Pb-210; Radionuclide; Bathymodiolus; Bioaccumulation; Hydrothermal vent.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00030/14172/11864.pdf

Chemical contaminants (trace metals, persistent organic pollutants) in albacore tuna from western Indian and south-eastern Atlantic Oceans: Trophic influence and potential as tracers of populations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Chouvelon, Tiphaine; Brach-papa, Christophe; Auger, Dominique; Bodin, Nathalie; Bruzac, Sandrine; Crochet, Sylvette; Degroote, Maxime; Hollanda, Stephanie J.; Hubert, Clarisse; Knoery, Joel; Munschy, Catherine; Puech, Alexis; Rozuel, Emmanuelle; Thomas, Bastien; West, Wendy; Bourjea, Jerome; Nikolic, Natacha.
Albacore tuna (Thunnus alalunga) is a highly commercial fish species harvested in the world's Oceans. Identifying the potential links between populations is one of the key tools that can improve the current management across fisheries areas. In addition to characterising populations' contamination state, chemical compounds can help refine foraging areas, individual flows and populations' structure, especially when combined with other intrinsic biogeochemical (trophic) markers such as carbon and nitrogen stable isotopes. This study investigated the bioaccumulation of seven selected trace metals – chromium, nickel, copper (Cu), zinc (Zn), cadmium (Cd), mercury (Hg) and lead – in the muscle of 443 albacore tunas, collected over two seasons and/or years in the...
Tipo: Text
Palavras-chave: Top predator; Bioaccumulation; Inorganic elements; Organic contaminants; Stable isotopes; Intrinsic markers.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00384/49532/51152.pdf

Metal bioaccumulation and storage forms in the shrimp, Rimicaris exoculata, from the Rainbow hydrothermal field (Mid-Atlantic Ridge); preliminary approach to the fluid-organism relationship
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Geret, Florence; Riso, Ricardo; Sarradin, Pierre-marie; Caprais, Jean-claude; Cosson, Richard P.
At the Rainbow hydrothermal site the concentrations of metals in the fluid are the highest observed in the Mid-Atlantic Ridge hydrothermal areas, and the shrimps Rimicaris exoculata were observed forming dense swarms in small depressions on the chimney walls. In order to understand the fluid-organism relationship, we investigated the relative abundance of metals in the water surrounding R. exoculata and their bioaccumulation by the shrimps. This first approach stresses a net metal enrichment around R. exoculata. Precipitation, scavenging and oxidative redissolution processes in the mixing zone are controlling the concentrations of metals. Their bioaccumulation varies according to their bioavailability in the surrounding water. Metals are abundant as...
Tipo: Text
Palavras-chave: Hydrothermal fluid; Rimicaris exoculata; Metals; Bioaccumulation; Rainbow.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00186/29762/28204.pdf

Growth and metal uptake of microalgae produced using salt groundwaters from the Bay of Bourgneuf
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gagneux Moreaux, Sindy; Cosson, Richard P.; Bustamante, Paco; Moreau, Christophe.
The Bay of Bourgneuf, France, is a main site of shellfish production. In the marshes along the bay, oyster intensive rearing and fattening need the mass production of microalgae. Salt groundwaters, available in this region, support a large part of this production for aquaculture. Studies carried out by local authorities have brought to the fore the accumulation of lead (Pb) in several samples of algal pastes derived from cultures using salt groundwater. The aim of this study was to compare growth, nutritional value and metal (Cd, Cu, Pb and Zn) uptake of four microalgae grown in two salt groundwaters or in enriched coastal seawater. Cultures of microalgae used in aquaculture (Haslea ostrearia, Phaeodactylum tricornutum, Skeletonema costatum and Tetraselmis...
Tipo: Text
Palavras-chave: Marine microalgae cultivation; Aquaculture; Metals; Growth; Prasinophycea; Bacillariophycea; Diatom; Bioaccumulation; Trace elements; Saline groundwater.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2135.pdf

Variability of PCB burden in 5 fish and sharks species of the French Mediterranean continental slope
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Cresson, Pierre; Fabri, Marie-claire; Miralles, Francoise Marco; Dufour, Jean-louis; Elleboode, Romain; Sevin, Karine; Mahe, Kelig; Bouchoucha, Marc.
Despite being generally located far from contamination sources, deep marine ecosystems are impacted by chemicals like PCB. The PCB contamination in five fish and shark species collected in the continental slope of the Gulf of Lions (NW Mediterranean Sea) was measured, with a special focus on intra- and interspecific variability and on the driving factors. Significant differences occurred between species. Higher values were measured in Scyliorhinus canicula, Galeus melastomus and Helicolenus dactylopterus and lower values in Phycis blennoides and Lepidorhombus boscii. These differences might be explained by specific abilities to accumulate and eliminate contaminant, mostly through cytochrome P450 pathway. Interindividual variation was also high and no...
Tipo: Text
Palavras-chave: Bioaccumulation; Continental slope; Gulf of Lions; PCB.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00313/42421/41790.pdf

Geographic, seasonal and ontogenetic variation in cadmium and mercury concentrations in squid (Cephalopoda : Teuthoidea) from UK waters
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pierce, G; Stowasser, G; Hastie, L; Bustamante, Paco.
Cadmium (Cd) and mercury (Hg) levels were measured in the tissue samples of two loliginid (Alloteuthis sp. and Loligo forbesi) and two ommastrephid (Todarodes sagittatus and Todaropsis eblanae) squid species collected from research cruise and fishery (market) samples in UK waters during 2004-05. Concentrations of Cd were generally higher in the ommastrephids, in all tissues except muscle. Hg concentrations were higher in T sagittatus than in the loliginids. In L. forbesi, metal concentrations differed between tissues and also varied in relation to body size, geographic origin, and season. Cd levels decreased with increasing body size. This may be related to a shift in the diet with growth, since small L. forbesi feed on benthic invertebrates that have...
Tipo: Text
Palavras-chave: Risk for human consumption; Bioaccumulation; Trace elements; Heavy metals; Cephalopods.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4356.pdf

Comportement chimique et geochimique des elements a l'état de traces dans l'estuaire de la Seine: Synthese des discussions
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Guegueniat, P.
In the synthesis of discussions about the chemistry of the Seine Bay, the author after a note on natural references for metal concentrations, speaks about fluorides, nutrients, PCB, and metallic elements. In conclusion some suggestions about pollutants transfer towards ecosystems link, are enumerated.
Tipo: Text
Palavras-chave: PCB; Fluorides; Chemical pollution; Trace metals; Food webs; Bioaccumulation; Biogeochemical cycle; Trace elements.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1303.pdf

Contrasting bioaccumulation and transport behaviour of two artificial radionuclides (Am-241 and Cs-134) in cuttlefish eggshell
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bustamante, Paco; Teyssie, J; Fowler, S; Warnau, M.
Radionuclide experiments were performed to study the accumulation, retention and transport of Am-241 and Cs-134 in egos of the common cuttlefish Sepia officinalis. Experiments were designed to determine the processes controlling uptake of both radionuclides following, exposure via seawater. The bioaccumulation of both radionuclides displayed saturation kinetics with steady state in uptake being reached in 10 d for Am-241 and 6 d for (CS)-C-134. Am-241 was readily taken up by the eggs which reached a concentration factor (CF) of 20 after 10 d of exposure. During embryonic development. the eggshell acted as an effective shield against Am-241 penetration with 98% of the radionuclide associated with this membrane. In contrast. (CS)-C-134 was transported across...
Tipo: Text
Palavras-chave: Cephalopods; Bioaccumulation; Biokinetics; Radionuclides.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1871.pdf

Fate of Cerium Oxide Nanoparticles in Natural Waters and Immunotoxicity in Exposed Rainbow Trout
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gagnon, C.; Bruneau, Audrey; Turcotte, P.; Pilote, M.; Gagne, F.
Once released in the environment, engineered nanoparticles (NPs) can undergo important transformation resulting in changed properties under natural conditions. This study investigated the fate, the bioavailability and the immunotoxicity of cerium oxide (CeO2) nanoparticles in fish exposed to CeO2 in representative surface waters differing in pH, organic matter content and conductivity (green and brown waters). Following an incubation period of NP CeO2 in different surface waters, particle size distribution and shape were determined by ultrafiltration and ICP-mass spectrometry, electronic microscopy and dynamic light scattering (DSL). Bioaccumulation and effect biomarkers focusing on the immune system responses (viability of immune cells and phagocytic...
Tipo: Text
Palavras-chave: Nanoparticle; Nanotoxicity; Bioaccumulation; Transformation.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00433/54422/55765.pdf

Cadmium pathways in an exploited intertidal ecosystem with chronic cadmium inputs (Marennes-Oleron, Atlantic coast, France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Pigeot, J; Miramand, P; Guyot, T; Sauriau, Pierre-guy; Fichet, D; Le Moine, Olivier; Huet, V.
The Marennes-Oleron Bay is subject to chronic pollution by cadmium (Cd) from the Gironde watershed. An ecosystem approach was used to study the fate of cadmium in the different biological compartments. The median Cd concentration was 0.4 mu g g(-1) dry weight for the 63 benthic species measured. When combined with the respective biomasses for the different species studied, we estimated that 7 kg of Cd is partitioned into the soft tissues of the benthic species in the bay. The majority of this cadmium was distributed between primary producers, mainly microphytobenthos (40 %), and suspension-feeders, mainly oysters (40 %). All other benthic species measured were associated with negligible masses of Cd. Two trophic levels contained 98 % of the Cd: 3 kg was...
Tipo: Text
Palavras-chave: Marennes Oleron Bay; Trophic food web; Bioaccumulation; Cadmium; Macrofauna; Microphytobenthos; Macrophytes.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3615.pdf

L'élevage conchylicole sur filière : revue bibliographique
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Robert, Stephane; Prou, Jean; Le Moine, Olivier; Taillade, Sylvie.
La revue bibliographie de l'élevage conchylicole sur filière permet de situer l'évolution de cette technique en France et dans le monde. Elle regroupe les travaux disponibles tant sur les méthodes et les techniques, que sur les contraintes biologiques et environnementales qui conditionnent ce type d'élevage. Les techniques d'élevage conchylicole sur filières sont directement dépendantes de l' environnement disponible. Si l'élevage sur filière de surface nécessite des zones protégées peu disponibles sur le littoral atlantique, la filière de sub-surface correspond mieux aux possibilités de développement en site semi-abrité tels que les Pertuis charentais. L'élevage en filières immergées permet d'envisager la recherche de nouveau espace en mer ouverte comme...
Tipo: Text
Palavras-chave: Algue toxique; Bioaccumulation; Capacité trophique; Compétiteur; Densité élevge; Elevage en suspendu; Filière; Eutrophisation; Génétique; Matière particulaire; Mer ouverte; Mortalité; Phytoplancton; Pollution; Production primarie; Technique élevage; Transfert de biotope.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00074/18510/16050.pdf

Trace element contamination in fish impacted by bauxite red mud disposal in the Cassidaigne canyon (NW French Mediterranean)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bouchoucha, Marc; Chekri, R.; Leufroy, A.; Jitaru, P.; Millour, S.; Marchond, N.; Chafey, C.; Testu, C.; Zinck, J.; Cresson, Pierre; Mirallès, F.; Mahe, A.; Arnich, N.; Sanaa, M.; Bemrah, N.; Guérin, T.
From 1966 to 2015, the Gardanne alumina refinery discharged some 20 million tons of bauxite residue (called red mud) into the Cassidaigne Canyon (northwest French Mediterranean) with impacts on local ecosystem functioning. Although these red muds contained high levels of trace elements (TE), in particular titanium (Ti), vanadium (V), aluminum (Al) and arsenic (As), surprisingly, their impacts on fish contamination levels and the risk related to fish consumption have been little studied until now. Here, 11 trace elements (Al, As, Cd, Cr, Co, Cr, Mn, Ni, Pb, Ti and V) were analyzed in muscle and, when possible, liver, from 1308 fish of 26 species from an impacted zone in the vicinity of the Cassidaigne Canyon and a reference zone, unaffected by red mud...
Tipo: Text
Palavras-chave: Trace element; Bioaccumulation; Arsenic speciation; ICP-MS; Fish; Industrial discharge.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61618/65529.pdf

PCB concentrations in plankton size classes, a temporal study in Marseille Bay, Western Mediterranean Sea
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Tiano, Marion; Tronczynski, Jacek; Harmelin-vivien, Mireille; Tixier, Celine; Carlotti, Francois.
PCB levels in plankton were investigated in the Bay of Marseille, Western Mediterranean Sea, between September 2010 and October 2011. Concentrations of PCB congeners (CB 18, CB 52, CB 101, CB 118, CB 138, CB 153, CB 180) were determined in three plankton size-classes (60–200, 200–500 and 500–1000 μm) together with different parameters: chlorophyll content, plankton dry-weight biomass, carbon and nitrogen stable isotope ratios and plankton-community structure. The ∑PCB7 concentrations ranged between 14.2 and 88.1 ng g−1 d.w., for all size classes and all sampling periods. The results do not show the biomass dilution effect and indicate moderate but significant biomagnification with plankton trophic position estimated by δ15N signatures. Equilibrium with...
Tipo: Text
Palavras-chave: PCBs; Phytoplankton; Zooplankton; Bioaccumulation; Coastal; Bay of Marseille.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00218/32881/31371.pdf

Experimental evidence of dietary ciguatoxin accumulation in an herbivorous coral reef fish
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Clausing, Rachel J.; Losen, Barbara; Oberhaensli, Francois R.; Darius, H. Taiana; Sibat, Manoella; Hess, Philipp; Swarzenski, Peter W.; Chinain, Mireille; Bottein, Marie-yasmine Dechraoui.
Ciguatoxins (CTXs) are potent algal toxins that cause widespread ciguatera poisoning and are found ubiquitously in coral reef food webs. Here we developed an environmentally-relevant, experimental model of CTX trophic transfer involving dietary exposure of herbivorous fish to the CTX-producing microalgae Gambierdiscus polynesiensis. Juvenile Naso brevirostris were fed a gel-food embedded with microalgae for 16 weeks (89 cells g.1 fish daily, 0.4 ¦Ìg CTX3C equiv kg.1 fish). CTXs in muscle tissue were detectable after 2 weeks at levels above the threshold for human intoxication (1.2 ¡À 0.2 ¦Ìg CTX3C equiv kg.1). Although tissue CTX concentrations stabilized after 8 weeks (¡«3 ¡À 0.5 ¦Ìg CTX3C equiv kg.1), muscle toxin burden (total ¦Ìg CTX in muscle tissue)...
Tipo: Text
Palavras-chave: Ciguatoxin; Bioaccumulation; Growth dilution; Trophic transfer; Herbivorous fish; Experimental model.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00442/55339/60476.pdf

Dietary exposure of juvenile common sole (Solea solea L.) to polybrominated diphenyl ethers (PBDEs): Part 1. Bioaccumulation and elimination kinetics of individual congeners and their debrominated metabolites
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Munschy, Catherine; Moisan, Karine; Tixier, Celine; Olivier, Nathalie; Gastineau, Olivier; Le Bayon, Nicolas; Buchet, Vincent.
The uptake and elimination of six PBDE congeners (BDE-28, -47, -99, -100, -153, -209) were studied in juvenile common sole (Solea solea L) exposed to spiked contaminated food over a three-month period, then depurated over a five-month period. The results show that all of the studied PBDEs accumulate in fish tissues, including the higher brominated congener BDE-209. Several additional PBDE congeners were identified in the tissues of exposed fish, revealing PBDE transformation, mainly via debromination. The identified congeners originating from PBDE debromination include BDE-49 and BDE-202 and a series of unidentified tetra-, penta-, and hepta- BDEs. Contaminant assimilation efficiencies (AEs) were related to their hydrophobicity (log K-ow) and influenced by...
Tipo: Text
Palavras-chave: Marine flatfish; PBDEs; Bioaccumulation; Biotransformation; Debromination.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00021/13188/11296.pdf

Effets de pollutions par hydrocarbures sur les capacités de défense d'organismes marins
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bado Nilles, Anne.
The effects of PAHs, considered among the most toxic by the United States Environmental Protection Agency, were tested in vitro and in vivo on two commercial species of the Pertuis-Charentais (Charente-Maritime, France): sea bass, Dicentrarchus labrax, and the Pacific oyster, Crassostrea gigas. This study was carried out as part of the European project EROCIPS with the aim of finding new immunological biomarkers caused by occasional pollution by hydrocarbons. During in vitro experimentation, pollutants and immunological biomarkers were choosen. Thereafter, the in vitro exposures to the soluble fraction of Erika's heavy fuel oil and its fluxant, light cycle oil, began. These exposures enable the validation of the experimental system used, with, in...
Tipo: Text
Palavras-chave: Biliary metabolites; Bioaccumulation; Toxicity; Immune défense; European sea bass; Pacific oyster; Métabolites biliaires; Bioaccumulation; Toxicité; Capacités de défense; Hydrocarbure; Bar commun; Huître creuse.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/these-7401.pdf

Contamination des crustacés décapodes par les composes organohalogénés : étude détaille de la bioaccumulation des PCB chez l'araignée de mer Maja brachydactyla
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bodin, Nathalie.
Marine decapod crustaceans are macrobenthic opportunist species, of great commercial interest, and can accumulate pollutants. Worrying about consumers' safety, polychlorobiphenyls (PCBs), polybromodiphenyl Ethers (PBDEs) and dioxins (PCDD/Fs) were analyzed in four crustacean species from the coastal waters of Brittany and Normandy. As regards to regulations, the consumption of crustacean muscle doesn't raise any health problems. The second objective of this study was to evaluate the biological processes influencing PCB bioaccumulation in the spider crab Maja brachydactyla. From a quantitative point of view, organotropism, diet and age were the major factors acting on contamination. From a qualitative point of view, PCB fingerprints depended on sex, and to...
Tipo: Text
Palavras-chave: Food safety; Biotransformation; Biomagnification; Food webs; Stable isotopes; Decapod crustaceans; Bioaccumulation; Polychlorinated biphenyls; Organic contaminants; Sécurité sanitaire; Biotransformation; Bioamplification; Réseaux trophiques; Isotopes stables; Crustacés décapodes; Bioaccumulation; Contaminants organiques.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-1149.pdf

Histological Description of the Skin Glands of Phyllobates bicolor (Anura: Dendrobatidae) Using Three Staining Techniques
Provedor de dados: International Journal of Morphology
Autores: Moreno-Gómez,Freddy; Duque,Tania; Fierro,Leonardo; Arango,Juan; Peckham,Xiomara; Asencio-Santofimio,Helberg.
The mechanisms to obtain and store skin toxins in frogs in of the family Dendrobatidae are not completely understood. In order to contribute to understand how toxins are stored, we provide a histological description of the cutaneous glands of the species Phyllobates bicolor. The skin of two adult frogs was examined through three histological staining techniques (hematoxilin-eosin, PAS and Masson Trichrome) using conventional optic microscopy. The skin of Phyllobates bicolor contains two types of exocrine glands: mucous and serous, which empty their products to the epidermal surface through an intra-epithelial duct that leads to a stoma. The mucous and serous glands and the intercalated ducts are surrounded by a discontinuous sheath of myoepithelial cells,...
Tipo: Journal article
Palavras-chave: Amphibians; Phyllobates bicolor; Integument; Epidermis; Dermis; Mucous glands; Serous glands; Chemical defenses; Bioaccumulation.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000300022

Mercury distribution in different tissues and trophic levels of fish from a tropical reservoir, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Kasper,Daniele; Palermo,Elisabete Fernandes Albuquerque; Dias,Ana Carolina Monteiro Iozzi; Ferreira,Gustavo Luiz; Leitão,Rafael Pereira; Branco,Christina Wyss Castelo; Malm,Olaf.
Concentrations of organic (OrgHg) and inorganic mercury (InorgHg) were assessed in different fish tissues (liver, muscle, kidney, gut and gonads) and trophic levels collected in an impacted tropical reservoir in southeastern Brazil. Organic mercury concentrations in muscle were remarkably higher in the carnivorous species Hoplias malabaricus and Oligosarcus hepsetus. The ratios of OrgHg in relation to total mercury (%OrgHg) in muscle also varied according to the species trophic level: 93% for carnivores, 84% for omnivores, 73% for algivores/planktivores and 58% for detritivores. The %OrgHg in the gut tissue of carnivores (78%) was much higher than that found in omnivores (30%), possibly reflecting a process of trophic biomagnification in the reservoir. On...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding habits; Hydroelectric; Mercury species; Biomagnification; Bioaccumulation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400025

Mercury concentration in the freshwater bonefish Cyphocharax gilbert (Curimatidae) and its parasite the crustacean Riggia paranensis (Cymothoidae)
Provedor de dados: Neotropical Ichthyology
Autores: Lins,Débora C.; Meirelles,Maria E.; Malm,Olaf; Lima,Neuza R. W.
Fish parasites can accumulate heavy metals reaching higher concentrations than the host and may affect the host's bioaccumulation. The present study compared total mercury concentration in the liver and muscle of Cyphocharax gilbert and in the parasite Riggia paranensis sampled in the middle Itabapoana River, Brazil, also considering the reproductive stages of both fish and parasite. Mean concentrations of mercury in muscle of fish varied from 20.8 ng.g-1 in mature females to 38.1 ng.g-1 in post-spawning females. The mean concentrations in fish liver varied from 60.9 ng/g in post-spawning females to 110.4 ng.g-1 in infested males. The mean concentration of mercury in parasites varied from 26.2 ng.g-1 in specimens carrying early embryo to 39.5 ng.g-1 in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metal; Bioaccumulation; Parasitic castration; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200017

Evaluación de la tasa fotosintética del alga verde Rhizoclonium riparium (Roth) Kützing ex Harvey, expuesta a cobre y su uso como indicador de contaminación por metales en aguas estuarinas
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Montoya, W.; Peña, E.J.; Benítez, R.
Algae have been used as bioindicators by having several advantages such as they have short life cycles, they can take up nutrients directly from water, they are generally easy to collect in sufficient amounts from various habitats; and they readily accumulate compounds present in seawater, making tissue analyses reliable indicators of water quality. In order to evaluate the bioremoval capability of the green alga Rhizoclonium riparium, the photosynthetic responses to heavy metal pollution under different sublethal concentrations of copper was assessed. Photosynthetic rates were significantly low (p &lt;0.05) at low copper concentrations, between (0.01 y 10 mg/l). Maximum photosynthetic values were shown at 30 y 60 mg/l and almost cero at 150 mg/ l of Cu....
Tipo: Conference Material
Palavras-chave: Heavy metals; Biological stress; Algae; Indicator species; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Heavy metals; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Algae; Indicator species; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_35790.
Ano: 2006
URL: http://hdl.handle.net/1834/2256

Variation de l’accumulation du lindane chez les alevins de &lt;Liza ramada&gt;
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Masmoudi, W.; Romdhane, M.S.; Kheriji, S.; El Cafsi, M.
Pendant la saison printanière de recrutement maximale (avril/mai2000) des alevins de Liza ramada , nous avons effectué 4 campagnes de  pêche au niveau de l’embouchure de canal « Khélij ». Les alevins de cette espèce  ainsi collectés ont été  repartis en trois classes de taille (classe I :19,4  1,3 mm ; classe II : 45,5  5,3 mm et classe III : 63,2  6,3mm)  dans le but d’y analyser les résidus du  lindane (  HCH ), un pesticide organochloré. Nos résultats ont révélé des concentrations de ce résidu chutant de 57,42  12,49 à 12,67  3,27  ng/ g de graisse en passant de la classe I à la classe III. Cette diminution est probablement due à une amélioration avec l’âge des capacités métaboliques de l’espèce vis à vis du contaminant. D’un autre côté, Liza...
Tipo: Journal Contribution
Palavras-chave: Alevins; Liza ramada; Lindane; Croissance; Bioaccumulation; Fry; Growth Bioaccumulation Fry Growth Lindane Pesticides Fry Bioaccumulation Growth Lindane Pesticides http://aims.fao.org/aos/agrovoc/c_11037 http://aims.fao.org/aos/agrovoc/c_32389 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_31402 http://aims.fao.org/aos/agrovoc/c_5739.
Ano: 2001
URL: http://hdl.handle.net/1834/3706

Diversidad de peces demersales en la plataforma continental del Ecuador
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Moncayo, D.; Trejos, R.; Maridueña, A.; Castro, R.
Se determine el contenido de Mercurio (Hg), Cadmio (Cd) y Plomo (Pb) en 18363 muestras de productos pesqueros colectadas durante el período enero del 2006 hasta julio del 2009. La determinación fue realizada empleando espectrofotometría de Absorción Atómica por generación de vapor frío (Hg) y horno de grafito (Cd y Pb), todas las concentraciones son expresadas en peso húmedo. Los análisis fueron realizados con el propósito de verificar que los productos pesqueros a ser exportados cumplen con los niveles establecidos en el Reglamento consolidado (CE)N°1881/2006, de la Unión Europea, que fija el conte¬nido máximo de determinados contaminantes en los productos alimenticios. Las concentraciones encontradas, en las muestras de peces, en su mayoría fueron...
Tipo: Journal Contribution
Palavras-chave: Heavy metals; Atomic absorption spectroscopy; Bioaccumulation; Pollution effects; Fishery products.
Ano: 2010
URL: http://hdl.handle.net/1834/4802

Evaluation de la contamination chimique par les metaux traces (cd, pb, hg et zn) du zooplancton et de la sardinelle (Sardinella aurita) dans le golfe de tunis
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Chouba, L.; Ennouri, R.; Kraiem, M.M.
La présente étude a pour but de déterminer l’organotropisme de quatre métaux traces (Cd, Pb, Hg et Zn) ainsi que leurs concentrations dans le zooplancton et dans trois organes (muscle, foie et branchies) de la sardinelle (Sardinella aurita) provenant du golfe de Tunis.  Les résultats ont montré que les concentrations moyennes des quatre métaux dosés (Cd, Pb, Hg et Zn) sont plus élevées dans la sardinelle que dans le zooplancton. Ceci est dû à la bioamplification de ces éléments dans la sardinelle qui occupe un niveau trophique élevé de la chaîne alimentaire marine.  Pour le Pb, le Hg et le Zn,  les teneurs le plus élevées ont été enregistrées dans les branchies de la sardinelle, alors que  le Cd est concentré davantage au niveau du foie. Les concentrations...
Tipo: Journal Contribution
Palavras-chave: Bioaccumulation; Marine pollution; Pollution indicators; Trace elements; Zooplankton; Sardinella aurita; Marine environment; Http://aims.fao.org/aos/agrovoc/c_39038; Http://aims.fao.org/aos/agrovoc/c_4610.
Ano: 2008
URL: http://hdl.handle.net/1834/4155

Bioaccumulation of mercury in some marine organisms from Lake Timsah and Bitter Lakes (Suez Canal, Egypt)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: El-Moselhy, K.M.
The present work is devoted to determine the level of total mercury in the different tissues of fish Mugil seheli, crab Portunus pelagicus, shrimp Metapenaeus stebbingi, and bivalves Paphia undulata and Gafrarium pectinatum collected from Lake Timsah and Bitter Lakes during spring 2003. In addition, factors affecting the accumulation of mercury in these organisms were studied. Levels of Hg in the edible parts of the investigated organisms showed the ranges 2.62 – 25.45 and 0.94 – 7.94 ng/g wet wt. in fish, 16.02 – 117.26 and 9.86 – 64.18 ng/g wet wt. in crab, 4.55 – 14.67 and 5.76 – 15.58 ng/g wet wt. in shrimp, and 1.06 – 36.31 and 5.38 – 69.59 ng/g wet wt. in bivalves from Lake Timsah and Bitter Lakes, respectively. High accumulation of Hg was recorded...
Tipo: Journal Contribution
Palavras-chave: Chemistry Studies; Mercury; Bioaccumulation; Marine organisms; Heavy metals; Bioaccumulation; Mercury; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_4751.
Ano: 2006
URL: http://hdl.handle.net/1834/1451

Distribution and relationships of heavy metals in the giant clam (Tridacna maxima) and associated sediments from different sites in the Egyptian Red Sea Coast
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Madkour, H.A.
The giant clam (Tridacna maxima) and sediments have been collected from clean and contaminated coastal sites of the Egyptian Red Sea. Selected samples of the giant clam shells and the associated surface sediments were analyzed for Fe, Mn, Zn, Cu, Pb, Ni and Cd. Significant spatial differences in metal concentrations in Tridacna maxima and sediments were identified. Copper and lead are greatly enriched in the giant clam shells, which is related to their physiological function. Cd content is higher in Tridacna maxima than in sediments, because of the easy substitution between Cd and Ca. The levels of most metals in the giant clam shells and sediments were higher in the anthropogenic sites than in the uncontaminated sites. Generally, metal variations reflect...
Tipo: Journal Contribution
Palavras-chave: Bioaccumulation; Heavy metals; Giant clam; Tridacna; Red Sea Accumulation Chemical analysis Clam culture Absorption http://aims.fao.org/aos/agrovoc/c_27.
Ano: 2005
URL: http://hdl.handle.net/1834/1307

Chemical composition of some marine algae from the mediterranean sea of alexandria, egypt
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: El-Sarraf, W.M.; El-Shaarawy, G.
No abstract is included
Tipo: Journal Contribution
Palavras-chave: Accumulation; Bioaccumulation; Biochemical composition; Algae; Bioaccumulation.
Ano: 1994
URL: http://hdl.handle.net/1834/1243

Etude saisonnière de la contamination métallique des  macroalgues de la lagune nord de Tunis
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Chouba, L.; Ajjabi-Chebil, L.; Herry, S.
Dans le but de démontrer la capacité de bioaccumulation métallique des macroalgues et sa variation temporelle, on s’est intéressé à la détermination de la gamme de concentrations en métaux traces (Plomb, Cadmium, Fer, Manganèse et Zinc) dans trois macroalgues vertes (Ulva rigida, Chaetomorpha linum, Caulerpa prolifera) au niveau de la lagune nord et du canal de navigation de Tunis sujettes à d’importants rejets anthropiques. Des collectes saisonnières ont été faites dans la lagune de Tunis durant la période d’avril 2009 au février 2010. Les teneurs métalliques déterminées par spectrophotométrie d’absorption atomique ont montré des variations significatives selon l’espèce et la saison de prélèvement. Les résultats ont montré que les teneurs en différents...
Tipo: Journal Contribution
Palavras-chave: Heavy metals; Algae; Seaweeds; Bioaccumulation; Green algae.
Ano: 2010
URL: http://hdl.handle.net/1834/4733

Evaluation de la contamination chimique par les métaux traces (Cd, Pb, Hg et Zn) du zooplancton et de la sardinelle &lt;Sardinella aurita&gt;dans le golfe de tunis
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ennouri, R.; Chouba, L.; Kraeim, M.M.
La présente étude a pour but de déterminer l’organotropisme de quatre métaux traces (Cd, Pb, Hg et Zn) ainsi que leurs concentrations dans le zooplancton et dans trois organes (muscle, foie et branchies) de la sardinelle (Sardinella aurita) provenant du golfe de Tunis.  Les résultats ont montré que les concentrations moyennes des quatre métaux dosés (Cd, Pb, Hg et Zn) sont plus élevées dans la sardinelle que dans le zooplancton. Ceci est dû à la bioamplification de ces éléments dans la sardinelle qui occupe un niveau trophique élevé de la chaîne alimentaire marine.  Pour le Pb, le Hg et le Zn,  les teneurs le plus élevées ont été enregistrées dans les branchies de la sardinelle, alors que  le Cd est concentré davantage au niveau du foie. Les concentrations...
Tipo: Journal Contribution
Palavras-chave: Bioaccumulation; Marine pollution; Pollution indicators; Trace elements; Zooplankton; Sardinella aurita; Bioaccumulation; Zooplankton; Sardinella aurita; Trace elements; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_39038; Http://aims.fao.org/aos/agrovoc/c_7834.
Ano: 2008
URL: http://hdl.handle.net/1834/3707

Etude quantitative et qualitative des métallothioneines chez la daurade "Sparus  aurata" exposée aux métaux lourds
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ameur, S.; Ghedira, J.; Guerbej, H.; Jebali, J.; Bouraoui, J.; Boussetta, H.
Dans l’environnement marin, les éléments traces peuvent s’accumuler dans les organismes à des concentrations supérieures à celles présentes dans l’eau. L’étude de la distribution tissulaire des métaux traces au niveau des organismes qui y sont exposés, constitue un aspect très important pour la compréhension de leur devenir. En outre, le suivi de la réponse biologique spécifique de ces organismes sentinelles aux xénobiotiques complète et consolide l’analyse chimique. Ce travail vise à étudier la distribution tissulaire des métaux traces et des métallothionéines (MTs) chez la daurade «Sparus aurata » traitée par un métal essentiel (le cuivre) et un métal non essentiel (le cadmium) à une concentration de 500µg /Kg de poids frais pendant 48 heures....
Tipo: Journal Contribution
Palavras-chave: Animal organs; Bioaccumulation; Cadmium; Gills; Heavy metals; Metals; Pollutants; Pollution effects; Sediment pollution; Toxicity tests; Trace metals; Marine sciences; Biomarkers of exposure (organisms); Metallic elements.
Ano: 2009
URL: http://hdl.handle.net/1834/4448

Development of a flow-through system for the study of toxicity and bioaccumulation processes in aquatic invertebrates
Provedor de dados: Open Marine Archive
Autores: Blust, R.; Decleir, W.
A flow-through test system for the study of toxicity and bioaccumulation processes is described. The apparatus can operate within a very wide range of flow rates. Flow deviations are less than 2% and the variation in test-agent concentration, (determined for copper) ranges from 3 to 8%. As a practical test a copper-toxicity experiment on adult &lt;i&gt;Artemia&lt;/i&gt; was carried out and the results compared with data obtained from a similar but static assay. The results indicate that: - bioassay and accumulation experiments must preferably be carried out under flow-through conditions to keep the concentration and bioavailability of the toxicant as constant as possible;- the data analysis must be based upon measured test-solution toxicant-concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Marine invertebrates; Toxicity tests.
Ano: 1984
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3261

Metal trace elements in mussels in Urubuqueçaba Island, Santos Bay, Brazil
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Campolim,Marcos Bührer; Henriques,Marcelo Barbosa; Petesse,Maria Letizia; Rezende,Karina Fernandes Oliveira; Barbieri,Edison.
Abstract: The objective of this work was to verify the existence of bioaccumulation in mussels of the species Perna perna, by determining the concentration of metal trace elements, in Urubuqueçaba Island, Santos Bay, Santos, SP, Brazil. Mussels were collected in natural banks and rocky shores, and sampling took place from April 2010 to June 2011. The concentration of the trace metal elements - aluminum, cadmium, cromium, copper, iron, manganese, nickel, lead, and zinc - was determined according to mussel sex, length, and seasonality classes, in a flame atomic absorption spectrometer. Statistical analyses were applied to the results with the use of the software PAST, with parametric and nonparametric approaches, at 5% probability. In the summer, mussels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Perna perna; Bivalve mollusks; Bioaccumulation; Seasonality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201131

Total mercury in wild felids occurring in protected areas in the central Brazilian Amazon
Provedor de dados: Acta Amazonica
Autores: LOPES,Marcelly Castello Branco; CARVALHO,Gabriel Oliveira de; BERNARDO,Robson Roney; MACEDO,Joana; LINO,Adan Santos; RAMALHO,Emiliano Esterci; KASPER,Daniele; MEIRE,Rodrigo Ornellas; TORRES,João Paulo Machado; MALM,Olaf.
ABSTRACT This is the first study to investigate mercury (Hg) contamination in felid species in the Brazilian Amazon. We collected 26 fur samples from wild felids of four species (Puma concolor, Panthera onca, Leopardus pardalis and Leopardus wiedii) occurring in the Mamirauá and Amanã sustainable development reserves, in the state of Amazonas. Samples were from museum specimens, except for five P. onca samples collected from free-living individuals. Total Hg concentrations ranged from 0.12 to 48.1 µg g-1. Concentrations of Hg did not differ significantly between museum specimens and live individuals of P. onca, but varied significantly among species, with significantly higher concentrations for P. onca and L. pardalis, which could be related to factors...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Mammals; Bioaccumulation; Fur; Heavy metals.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000200142

Mercury Levels in Eggs, Embryos, and Neonates of Trachemys callirostris (Testudines, Emydidae)
Provedor de dados: Acta Biológica Colombiana
Autores: RENDÓN-VALENCIA,BEATRIZ; ZAPATA,LINA M; C. BOCK,BRIAN; PÁEZ,VIVIAN P.; PALACIO,JAIME A.
We quantified total mercury concentrations in eggshells, egg yolks, and embryos from 16 nests of the Colombian Slider (Trachemys callirostris). Nests were collected in different stages of development, but estimated time of incubation in natural substrates was not correlated with mercury levels in the eggs, suggesting that mercury was not absorbed from the substrate, but more likely passed on to the embryos during folliculogenesis by the reproductive females who had bioaccumulated the mercury from environmental sources. Mean mercury concentrations were higher in embryos than in eggshells or egg yolks, indicating that embryos also bioaccumulate mercury present in other egg tissues. Intra-clutch variation in egg yolk mercury concentrations was relatively...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Colombian slider; Heavy metals; Mercury; Yolk.
Ano: 2014
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2014000300016

Air quality biomonitoring of trace elements in the metropolitan area of Huancayo, Peru using transplanted Tillandsia capillaris as a biomonitor
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: CRUZ,ALEX RUBEN H. DE LA; AYUQUE,RODOLFO FRANKLIN O.; CRUZ,RONY WILLIAM H. DE LA; LÓPEZ-GONZALES,JAVIER L.; GIODA,ADRIANA.
Abstract  The air quality and distribution of trace elements in a metropolitan area of the Peruvian Andes were evaluated using transplanted epiphytic Tillandsia capillaris as biomonitors. Biomonitors were collected from the non-contaminated area and exposed to five sites with different types of contamination for three months in 2017. After exposure, the content of twenty-one elements were determined by ICP-MS analysis. Datasets were evaluated by one-way ANOVA, exposed-to-baseline (EB), hierarchical cluster analysis (HCA) and principal component analysis (PCA). Results showed significant differences among sampling sites for several elements. According to EF ratios for Ba, Cr, Cu, Pb, Sb, and Zn EB ratios value greater than 1.75 were found around urban...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Active biomonitoring; Bioaccumulation; Airborne trace elements; Peruvian Andes; Tillandsia capillaris.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100501

Total mercury in sharks along the southern Brazilian Coast
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Mársico,E.T.; Machado,M.E.S.; Knoff,M.; São Clemente,S.C.
Pesquisou-se a concentração de mercúrio total na porção muscular de 39 exemplares de tubarões de três diferentes espécies Prionace glauca, Isurus oxyrhynchus, Sphyrna zygaena, capturados na costa sul do Brasil, Santa Catarina. O teor de mercúrio foi determinado por espectrofotometria de absorção atômica por vapor frio. Observou-se ampla variação na concentração de mercúrio total com valor individual máximo excedendo o limite estabelecido pela legislação brasileira, de 1.0µg.g-1 em um exemplar fêmea de P. glauca. Nessa espécie, a concentração de Hg-total aumentou proporcionalmente ao comprimento total (r=0,62; P&lt;0,0001). Não foi evidenciada diferença estatisticamente significativa entre exemplares fêmeas e machos.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shark; Mercury; Bioaccumulation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600039

Optimization of biomass production with copper bioaccumulation by yeasts in submerged fermentation
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Arakaki,Andréa Haruko; Souza Vandenberghe,Luciana Porto de; Soccol,Vanete Thomaz; Masaki,Ryu; Rosa Filho,Ernani Francisco da; Gregório,Alexsandro; Soccol,Carlos Ricardo.
The objective of this work was to study the production of biomass with copper bioaccumulation in submerged fermentation using sugarcane molasses. Candida pelliculosa BARU 05 isolated from Baru (Dipteryx alata) was selected for its good capacity to accumulate the copper. Fermentation was carried out using the medium composed by sugarcane molasses at 5 °Brix enriched with (g/L) CuSO4.5H2O 0.1; yeast extract, 10.0; (NH4)2SO4, 5.0 ; KH2PO4, 5.0 MgSO4, 0.5, inoculum 10 % of total volume (100 ml), pH 6.0, and incubation at 30 °C, 120 rpm for 120 h. After three steps of optimization an uptake of 95.04% and 13.397 g/L biomass were obtained. The kinetics of copper bioaccumulation and biomass production was followed in a 10- liter bioreactor in a batch and fed-batch...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Baru; Yeast; Copper; Sugarcane molasses.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500021

Impact of Anthropogenic Activities on Water Quality of The Paranhana River, Southern Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Dalzochio,Thaís; Souza,Mateus Santos de; Simões,Leonardo Airton Ressel; Silva,Gláucia Joselaine Herbert; Rodrigues,Gabriela Zimmermann Prado; Andriguetti,Natália Bordin; Silva,Luciano Basso da; Gehlen,Günther.
Abstract: The Paranhana River, located in Southern Brazil, is one of the major tributaries of the Sinos River basin and receives mainly industrial and domestic effluents. In the present study, water physicochemical and microbiological analyses, condition factor, micronucleus test, gill histopathology and metal bioaccumulation in the muscle of the native fish Bryconamericus iheringii collected at two sites (S1 and S2) of the Paranhana River under different degrees of anthropogenic pressures were assessed in four sampling campaigns. Data from water quality parameters, condition factor, mucous cells proliferation in fish gills and bioaccumulation of chromium and manganese in muscle evidenced higher impacts at S2, whereas a higher genotoxic potential was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomarkers; Paranhana River; Bioaccumulation; Histopathology; Micronucleus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100421

Bioaccumulation of silver and the isolation of metal-binding protein from P.diminuta
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Ibrahim,Zaharah; Ahmad,Wan Azlina; Baba,Abu Bakar.
A silver uptake study by Pseudomonas diminuta was carried out by growing the bacteria in a chloride-free medium (CFM) containing silver ions (50 muM) in a batch culture. From the results, it was found that higher amounts of silver were accumulated inside the cell during early exponential phase compared to the amount bound at the cell surface. This suggested a possible mechanism for metal uptake during bacterial growth. In view of this, attempts were made to isolate proteins which might be associated with silver-binding properties from cultures of P.diminuta grown in the presence and absence of silver. The proteins were first extracted from the bacterial cultures by precipitation with ammonium sulfate followed by purification using isoelectric focussing and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Metal-binding proteins; Pseudomonas diminuta.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300001

Arsenic tolerance of Microcystis novacekii (Komárek-Compère, 1974) and its arsenic decontamination potential
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Ferreira,Fernanda Aires Guedes; Franco,Maione Wittig; Oliveira,Dirce Maria De; Magalhães,Sérgia Maria Starling; Barbosa,Francisco Antônio Rodrigues.
ABSTRACT Cyanobacteria possess metallic ion interaction properties that should be explored with the aim of recovering arsenic (As) contaminated areas. Contamination of As is an issue of worldwide concern due to the risk of human chronic intoxication and negative environmental health effects. In this study the potential decontamination of As(III) and As(V) using cyanobacteria cultures was assessed. Microcystis novacekii (Komárek-Compere, 1974) showed normal growth in concentrations of As(V) similar to those found in natural environments contaminated with As, demonstrating its resistance to As(V). Growth rates gradually decreased upon exposure to high As(V) concentrations from 600 to 5630 mg.L-1 while As(III) affected growth from 14.7 - 85.7 mg.L-1. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arsenic; Cyanobacteria; Bioaccumulation; Toxicity; Growth rates.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100414

Oxidative Stress, Chromium-Resistance and Uptake by Fungi: Isolated from Industrial Wastewater
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Elahi,Amina; Rehman,Abdul.
ABSTRACT Trichosporon asahii and Rhodotorula mucilaginosa isolated from wastewater effluents were identified as chromium-resistant yeasts. Cr(VI) concentrations at 8 mM and 6 mM were inhibitory for R. mucilaginosa and T. asahii. Remarkably elevated GSH (69.88 ± 10.01) and GSSG (11.24 ± 0.96) was observed under metal stress in T. asahii as compared to R. mucilaginosa GSH (18.95 ± 3.19) and GSSG (3.7 ± 2.74) mM g-1 8 level. Statistical analysis revealed significantly higher GSH/GSSG ratio in both strains. NPSH (29.84 ± 0.54) level in T. asahii was much higher than in R. mucilaginosa (6.05 ± 0.24). Chromate reductase (ChR) was assayed and its activity was optimum at 50°C (pH 6) in T. asahii while R. mucilaginosa showed higher activity at 30°C (pH 7). Activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichosporon asahii; Rhodotorula mucilaginosa; Wastewater; Resistance; Bioaccumulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100452

Detection of poliovirus type 2 in oysters by using cell culture and RT-PCR
Provedor de dados: Brazilian Journal of Microbiology
Autores: Vinatea,Cecília E.B.; Sincero,Thaís C.M.; Simões,Claúdia M.O.; Barardi,Célia R.M.
Shellfish are readily contaminated with viruses present in water containing sewage due to the concentrating effect of filter feeding. Enteroviruses are generally used as a model for the detection of viruses from shellfish due to their public health significance. In the present work, oysters were placed in glass aquaria containing seawater plus unicellular algae. Two experiments were performed: 1) oysters bioaccumulating four different poliovirus type 2 concentrations: 5 x 10(4), 2.5 x 10(4), 5 x 10³ and 5 x 10² PFU/mL during 20h; 2) oyster tissues directly inoculated with 6.0 x 10(5) and 1.0 x 10(5) PFU/mL. After viruses seeding, tissue samples were processed by an adsorption-elution-precipitation method. Positive controls were performed by seeding 6.0 x...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oysters; Poliovirus; Bioaccumulation; Cell culture; RT-PCR.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000100012

Bioaccumulation of copper, zinc, cadmium and lead by Bacillus sp., Bacillus cereus, Bacillus sphaericus and Bacillus subtilis
Provedor de dados: Brazilian Journal of Microbiology
Autores: Costa,Antonio Carlos Augusto da; Duta,Flavia Pereira.
This work presents some results on the use of microbes from the genus Bacillus for uptake of cadmium, zinc, copper and lead ions. Maximum copper bioaccumulations were 5.6 mol/g biomass for B. sphaericus, 5.9 mol/g biomass for B. cereus and B. subtilis, and 6.4 mol/g biomass for Bacillus sp. Maximum zinc bioaccumulations were 4.3 mol/g biomass for B. sphaericus, 4.6 mol/g biomass for B. cereus, 4.8 mol/g biomass for Bacillus sp. and 5.0 mol/g biomass for B. subtilis. Maximum cadmium bioaccumulations were 8.0 mol/g biomass for B. cereus, 9.5 mol/g biomass for B. subtilis, 10.8 mol/g biomass for Bacillus sp. and 11.8 mol/g biomass for B. sphaericus. Maximum lead biomaccumulations were 0.7 mol/g biomass for B. sphaericus, 1.1 mol/g biomass for B. cereus, 1.4...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Bacillus; Heavy metals.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100001

Uptake of free and complexed silver ions by different strains of Rhodotorula mucilaginosa
Provedor de dados: Brazilian Journal of Microbiology
Autores: Gomes,Newton C.M.; Rosa,Carlos A.; Pimentel,Patrícia F.; Mendonça-Hagler,Leda C.S.
Five strains of Rhodotorula mucilaginosa were tested for the ability to accumulate free and complexed silver ions by metabolism-dependent and -independent processes. The ability to take up Ag+ was observed in both live and dead biomass, whereas silver dicyanide [Ag (CN)2-] uptake was strictly glucose dependent. In contrast to Ag (CN)2-, glucose addition inhibited by 16 to 25% the Ag+ uptake rate of living UFMG - Y02, Y27, and Y35 cells, while strains CBS 316 and UFMG-Y01 showed an improved uptake rate of about 115% and 13%, respectively. The Langmuir sorption model was used to evaluate the silver sorption capability of the R. mucilaginosa strains. The calculated q max value suggested that R. mucilaginosa strains UFMG-Y27 had the highest loading capacity....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Biosorption; Rhodotorula mucilaginosa; Silver.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100013