@article {8534, title = {Chlordecone-contaminated epilithic biofilms show increased adsorption capacities}, journal = {Science of The Total Environment}, volume = {825}, year = {2022}, month = {Jan-06-2022}, pages = {153942}, issn = {00489697}, doi = {10.1016/j.scitotenv.2022.153942}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0048969722010348}, author = {C{\'e}dric Hubas and Monti, Dominique and Jean-Michel Mortillaro and Augagneur, Sylvie and Carbon, Anne and Duran, Robert and Karama, Solange and Tarik Meziane and Pardon, Patrick and Risser, Th{\'e}o and Tapie, Nathalie and Najet Thiney and Budzinski, H{\'e}l{\`e}ne and Lauga, B{\'e}atrice} } @article {8769, title = {Temporal variations in the level of chlordecone in seawater and marine organisms in Martinique Island (Lesser Antilles)}, journal = {Environmental Science and Pollution Research}, year = {2022}, month = {Oct-06-2023}, abstract = {The present study, conducted in the Galion Bay in Martinique, aims to highlight the temporal and seasonal variations of chlordecone contamination (an organochlorine pollutant) in the ambient environment (seawater) but also in the marine organisms in three main coastal marine habitats (mangroves, seagrass beds and coral reefs). To this end, two methodologies were used to measure and compare the chemical contamination of seawater during 13 months (spot samplings and POCIS technique). In parallel, concentrations of chlordecone and isotopic ratios (C and N) were carried out on marine organisms, collected during two contrasting climatic periods (dry and rainy), to evidence seasonal variations. The results showed that the contamination of seawater displayed significant variations over time and depended on environmental factors such as water flows, which imply dilution and dispersion phenomena. Concerning the marine organisms, the level of contamination varied considerably between the two seasons in seagrass beds with higher levels of contamination during the rainy season. Reef organisms were more moderately affected by this pollution, while mangrove organisms showed a high level of chlordecone whatever the season. Finally, isotope analyses highlighted that bioamplification along marine food-webs occurs at each season and each station.}, keywords = {coral reef, Mangrove, organochlorine pollution, passive samplers, seagrass, Stable isotopes}, issn = {0944-1344}, doi = {10.1007/s11356-022-21528-9}, url = {https://link.springer.com/10.1007/s11356-022-21528-9}, author = {Charlotte R. Dromard and All{\'e}nou, Jean-Pierre and Tapie, Nathalie and Budzinski, H{\'e}l{\`e}ne and Cimmaterra, Nicolas and De Rock, Pauline and Arkam, Salim and Cordonnier, S{\'e}bastien and Gonzalez, Jean-Louis and Bouchon-Navaro, Yolande and Bouchon, Claude and Thouard, Emmanuel} } @article {7398, title = {Physical properties of epilithic river biofilm as a new lead to perform pollution bioassessments in overseas territories}, journal = {Scientific Reports}, volume = {10}, year = {2020}, month = {Jan-12-2020}, abstract = {Chlordecone (CLD) levels measured in the rivers of the French West Indies were among the highest values detected worldwide in freshwater ecosystems, and its contamination is recognised as a severe health, environmental, agricultural, economic, and social issue. In these tropical volcanic islands, rivers show strong originalities as simplified food webs, or numerous amphidromous migrating species, making the bioindication of contaminations a difficult issue. The objective of this study was to search for biological responses to CLD pollution in a spatially fixed and long-lasting component of the rivers in the West Indies: the epilithic biofilm. Physical properties were investigated through complementary analyses: friction, viscosity as well as surface adhesion were analyzed and coupled with measures of biofilm carbon content and exopolymeric substance (EPS) production. Our results have pointed out a mesoscale chemical and physical reactivity of the biofilm that can be correlated with CLD contamination. We were able to demonstrate that epilithic biofilm physical properties can effectively be used to infer freshwater environmental quality of French Antilles rivers. The friction coefficient is reactive to contamination and well correlated to carbon content and EPS production. Monitoring biofilm physical properties could offer many advantages to potential users in terms of effectiveness and ease of use, rather than more complex or time-consuming analyses.}, doi = {10.1038/s41598-020-73948-7}, url = {http://www.nature.com/articles/s41598-020-73948-7}, author = {Monti, Dominique and C{\'e}dric Hubas and Louren{\c c}o, Xavier and Begarin, Farid and Haouis{\'e}e, Alexandre and Romana, Laurence and Lefran{\c c}ois, Estelle and Jestin, Alexandra and Budzinski, H{\'e}l{\`e}ne and Tapie, Nathalie and Risser, Th{\'e}o and Mansot, Jean-Louis and Philippe Keith and Gros, Olivier and Pascal Jean Lopez and Lauga, B{\'e}atrice} } @article {6935, title = {Detection of Adsorbed Chlordecone on Microplastics in Marine Sediments in Guadeloupe: A Preliminary Study}, journal = {Gulf and Caribbean Research}, volume = {30}, year = {2019}, month = {Jan-01-2019}, pages = {GCFI8 - GCFI14}, doi = {10.18785/gcr.3001.14}, url = {https://aquila.usm.edu/gcr/vol30/iss1/14/}, author = {Sandre, Fidji and Charlotte R. Dromard and Le Menach, Karyn and Bouchon-Navaro, Yolande and Cordonnier, S{\'e}bastien and Tapie, Nathalie and Budzinski, H{\'e}l{\`e}ne and Bouchon, Claude} } @article {6934, title = {Environmental fate of chlordecone in coastal habitats: recent studies conducted in Guadeloupe and Martinique (Lesser Antilles)}, journal = {Environmental Science and Pollution Research}, year = {2019}, month = {Feb-03-2019}, issn = {0944-1344}, doi = {10.1007/s11356-019-04661-w}, url = {http://link.springer.com/10.1007/s11356-019-04661-w}, author = {Charlotte R. Dromard and Devault, Damien A. and Bouchon-Navaro, Yolande and All{\'e}nou, Jean-Pierre and Budzinski, H{\'e}l{\`e}ne and Cordonnier, S{\'e}bastien and Tapie, Nathalie and Reynal, Lionel and Lemoine, Soazig and Thom{\'e}, Jean-Pierre and Thouard, Emmanuel and Monti, Dominique and Bouchon, Claude} } @article {3506, title = {Sub-chronic exposure to fluoxetine in juvenile oysters (Crassostrea gigas): uptake and biological effects.}, journal = {Environ Sci Pollut Res Int}, year = {2016}, month = {2014 Oct 15}, abstract = {

The bioconcentration potential of fluoxetine (FLX) and its biological effects were investigated in juvenile Pacific oyster exposed for 28\ days to environmentally relevant concentrations of FLX (1\ ng L(-1), 100\ ng L(-1) and up to 10\ μg\ L(-1)). FLX bioaccumulated in oyster flesh resulting in 28-day bioconcentration factors greater than 2,000 and 10,000 by referring to wet and dry weights, respectively. Nevertheless, FLX did not induce oyster mortality, delayed gametogenesis, or lead to adverse histopathological alterations. At the two highest concentrations, despite non-optimal trophic conditions, FLX stimulated shell growth but only in a transient manner, suggesting a role of serotonin in the regulation of feeding and metabolism in bivalves. Those high concentrations seemed to drive bell-shaped responses of catalase and glutathione S-transferase activities throughout the exposure period, which may indicate the activation of antioxidant enzyme synthesis and then an enhanced catabolic rate or direct inhibition of those enzymes. However, no clear oxidative stress was detected because no strong differences in thiobarbituric acid-reactive substance (TBARS) content (i.e. lipid peroxidation) were observed between oyster groups, suggesting that cellular defence mechanisms were effective. These results demonstrate the importance of considering additional biomarkers of oxidative stress to obtain a comprehensive overview of the FLX-induced changes in marine bivalves exposed under realistic conditions. Considering the battery of biomarkers used, FLX appears to induce little or no effects on oyster physiology even at a concentration of 10\ μg\ L(-1). These results do not confirm the lowest observed effect concentration (LOEC) values reported by some authors in other mollusc species.

}, issn = {1614-7499}, doi = {10.1007/s11356-014-3702-1}, author = {Di Poi, C and L Evariste and S{\'e}guin, Alexis and Mottier, A and Pedelucq, Julie and Jean-Marc Lebel and Antoine Serpentini and Budzinski, H{\'e}l{\`e}ne and Katherine Costil} } @article {3862, title = {Gonadal transcriptome analysis of wild contaminated female European eels during artificial gonad maturation.}, journal = {Chemosphere}, volume = {139}, year = {2015}, month = {2015 Jul 6}, pages = {303-309}, abstract = {

Since the early 1980s, the population of European eels (Anguilla anguilla) has dramatically declined. Nowadays, the European eel is listed on the red list of threatened species (IUCN Red List) and is considered as critically endangered of extinction. Pollution is one of the putative causes for the collapse of this species. Among their possible effects, contaminants gradually accumulated in eels during their somatic growth phase (yellow eel stage) would be remobilized during their reproductive migration leading to potential toxic events in gonads. The aim of this study was to investigate the effects of organic and inorganic contaminants on the gonad development of wild female silver eels. Female silver eels from two sites with differing contamination levels were artificially matured. Transcriptomic analyses by means of a 1000 candidate gene cDNA microarray were performed on gonads after 11weeks of maturation to get insight into the mechanisms of toxicity of contaminants. The transcription levels of several genes, that were associated to the gonadosomatic index (GSI), were involved in mitotic cell division but also in gametogenesis. Genes associated to contaminants were mainly involved in the mechanisms of protection against oxidative stress, in DNA repair, in the purinergic signaling pathway and in steroidogenesis, suggesting an impairment of gonad development in eels from the polluted site. This was in agreement with the fact that eels from the reference site showed a higher gonad growth in comparison to contaminated fish.

}, issn = {1879-1298}, doi = {10.1016/j.chemosphere.2015.06.007}, author = {Baillon, Lucie and Oses, Jennifer and Pierron, Fabien and Bureau du Colombier, Sarah and Caron, Antoine and Normandeau, Eric and Lambert, Patrick and Couture, Patrice and Labadie, Pierre and Budzinski, H{\'e}l{\`e}ne and Sylvie Dufour and Bernatchez, Louis and Baudrimont, Magalie} } @article {3638, title = {Abnormal ovarian DNA methylation programming during gonad maturation in wild contaminated fish.}, journal = {Environ Sci Technol}, volume = {48}, year = {2014}, month = {2014 Oct 7}, pages = {11688-95}, abstract = {

There is increasing evidence that pollutants may cause diseases via epigenetic modifications. Epigenetic mechanisms such as DNA methylation participate in the regulation of gene transcription. Surprisingly, epigenetics research is still limited in ecotoxicology. In this study, we investigated whether chronic exposure to contaminants experienced by wild female fish (Anguilla anguilla) throughout their juvenile phase can affect the DNA methylation status of their oocytes during gonad maturation. Thus, fish were sampled in two locations presenting a low or a high contamination level. Then, fish were transferred to the laboratory and artificially matured. Before hormonal treatment, the DNA methylation levels of the genes encoding for the aromatase and the receptor of the follicle stimulating hormone were higher in contaminated fish than in fish from the clean site. For the hormone receptor, this hypermethylation was positively correlated with the contamination level of fish and was associated with a decrease in its transcription level. In addition, whereas gonad growth was associated with an increase in DNA methylation in fish from the clean site, no changes were observed in contaminated fish in response to hormonal treatment. Finally, a higher gonad growth was observed in fish from the reference site in comparison to contaminated fish.

}, issn = {1520-5851}, doi = {10.1021/es503712c}, author = {Pierron, Fabien and Bureau du Colombier, Sarah and Moffett, Audrey and Caron, Antoine and Peluhet, Laurent and Daffe, Guillemine and Lambert, Patrick and Elie, Pierre and Labadie, Pierre and Budzinski, H{\'e}l{\`e}ne and Sylvie Dufour and Couture, Patrice and Baudrimont, Magalie} }