Consulta: subjectFacets:"Contaminant"
Registros recuperados: 4
Data/hora: 11/06/2024 13:58:46

Improving detoxification Efficiency of PSP-contaminated oysters (Crassostrea gigas Thunberg)
Provedor de dados: 5
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

Rapid responses of pristine marine planktonic communities in experimental approach to diuron and naphthalene (Juan de Nova Island, Western Indian Ocean)
Provedor de dados: 5
Autores: Bouvy, Marc; Dupuy, Christine; Got, Patrice; Domaizon, Isabelle; Carré, Claire; Pagano, Marc; Debroas, Didier; Roques, Cécile; Leboulanger, Christophe.
Planktonic communities from Juan de Nova lagoon were submitted to a single exposure of diuron or naphthalene in triplicate outdoor 40-L mesocosms for 5 days. The study followed the temporal changes of the assemblages by determining abundances and taxonomic level of microbial (heterotrophic prokaryotes, picocyanobacteria, heterotrophic protists and phytoplankton) and metazooplankton communities. Exposure to both contaminants did not result in significant changes in phytoplankton abundances. Microscopic identification demonstrated the dominance of Bacillariophyta (mostly Chaetoceros tenuissimus) accounting for more than 95% of the microalgae detected in all mesocosms. Using 18S rRNA metabarcoding, temporal changes in the proportion of eukaryotic operational...
Tipo: Text
Palavras-chave: Contaminant; Taxonomy; Metabarcoding; Plankton; Experiments; Lagoon.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00681/79348/81853.pdf

Etude de la DYNAmique des MORtalités estivales (DYNAMOR) : Etude pluridisciplinaire intrasite du modèle de mortalité "plat-table" du bassin de Marennes Oléron
Provedor de dados: 5
Autores: Soletchnik, Patrick; Le Moine, Olivier; Razet, Daniel; Blouin, Frederic; Geairon, Philippe.
In the scope of the "Coastal ecology" thematics, the LCPC supervises a study which aims at understanding the causes and mechanisms of the summer mortality of C. Gigas. Different types of analysis conducted on the oyster (quality index, immunology, cell biology, etc.) enable the identification of a one month period preceding the acute mortality episode and during which the animals undergo a stress situation and become weaker. The energy balance (material balance) is close to zero for the most exposed stocks. Studies conducted on the environment included the search for pathogens and contaminants in the water column, the sediment and the animal, as well as the analysis of the hydrological features of the mass of water. The weakening period corresponds to an...
Tipo: Text
Palavras-chave: Hydrologie; Modèle; Contaminant; Sédiment; Colonne d'eau; Bilan énergétique; Crassostrea gigas; Huîtres; Mortalités estivales.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-3391.pdf

Simulated conservative tracer as a proxy for S-metolachlor concentration predictions compared to POCIS measurements in Arcachon Bay
Provedor de dados: 5
Autores: Fauvelle, Vincent; Belles, Angel; Budzinski, Helene; Mazzella, Nicolas; Plus, Martin.
The work presented here aims at comparing monitoring of S-metolachlor, the major pesticide in use in the Arcachon Bay (South West of France, transitional coastal area), by chemical analysis (monthly passive sampling) and contaminant dissipation modeling from sources (Mars-2D model). The global strategy consisted in i) identifying the major sources of S-metolachlor to the Bay, ii) monitoring these sources for 12 months, and iii) comparing modeled data in the Bay based on measured inputs, to chemical measurements made inside the Bay along with the 12-month source monitoring. Results first showed that the major S-metolachlor surface inputs to the Arcachon Bay are mainly from one single source. Modeled and measured data were in good agreement at 5 sites in the...
Tipo: Text
Palavras-chave: Passive sampling; POCIS; Mars-2D; Contaminant; Monitoring; Coastal area; Pesticides; S-metolachlor.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00445/55627/57334.pdf