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| Epelboin, Yanouk; Quere, Claudie; Pernet, Fabrice; Pichereau, Vianney; Corporeau, Charlotte. |
| Here, we assess the physiological effects induced by environmental concentrations of pesticides in Pacific oyster Crassostrea gigas. Oysters were exposed for 14 d to trace levels of metconazole (0.2 and 2 mu g/L), isoproturon (0.1 and 1 mu g/L), or both in a mixture (0.2 and 0.1 mu g/L, respectively). Exposure to trace levels of pesticides had no effect on the filtration rate, growth, and energy reserves of oysters. However, oysters exposed to metconazole and isoproturon showed an overactivation of the sensing-kinase AMP-activated protein kinase alpha (AMPK alpha), a key enzyme involved in energy metabolism and more particularly glycolysis. In the meantime, these exposed oysters showed a decrease in hexokinase and pyruvate kinase activities, whereas 2-DE... |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00284/39490/44227.pdf |
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| Sussarellu, Rossana; Suquet, Marc; Thomas, Yoann; Lambert, Christophe; Fabioux, Caroline; Pernet, Marie Eve Julie; Le Goic, Nelly; Quillien, Virgile; Mingant, Christian; Epelboin, Yanouk; Corporeau, Charlotte; Guyomarch, Julien; Robbens, Johan; Paul-pont, Ika; Soudant, Philippe; Huvet, Arnaud. |
| Plastics are persistent synthetic polymers that accumulate as waste in the marine environment. Microplastic (MP) particles are derived from the breakdown of larger debris or can enter the environment as microscopic fragments. Because filter-feeder organisms ingest MP while feeding, they are likely to be impacted by MP pollution. To assess the impact of polystyrene microspheres (micro-PS) on the physiology of the Pacific oyster, adult oysters were experimentally exposed to virgin micro-PS (2 and 6 µm in diameter; 0.023 mg·L−1) for 2 mo during a reproductive cycle. Effects were investigated on ecophysiological parameters; cellular, transcriptomic, and proteomic responses; fecundity; and offspring development. Oysters preferentially ingested the 6-µm micro-PS... |
| Tipo: Text |
Palavras-chave: Microplastic; Reproduction; Energy allocation; Oyster. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00311/42233/41600.pdf |
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| Mosnier, Emilie; Dusfour, Isabelle; Lacour, Guillaume; Saldanha, Raphael; Guidez, Amandine; Gomes, Margarete S.; Sanna, Alice; Epelboin, Yanouk; Restrepo, Johana; Davy, Damien; Demar, Magalie; Djossou, Félix; Douine, Maylis; Ardillon, Vanessa; Nacher, Mathieu; Musset, Lise; Roux, Emmanuel. |
| Background In 2017, inhabitants along the border between French Guiana and Brazil were affected by a malaria outbreak primarily due to Plasmodium vivax (Pv). While malaria cases have steadily declined between 2005 and 2016 in this Amazonian region, a resurgence was observed in 2017. Methods Two investigations were performed according to different spatial scales and information details: (1) a local study on the French Guiana border, which enabled a thorough investigation of malaria cases treated at a local village health center and the entomological circumstances in the most affected neighborhood, and (2) a regional and cross-border study, which enabled exploration of the regional spatiotemporal epidemic dynamic. Number and location of malaria cases were... |
| Tipo: Text |
Palavras-chave: Plasmodium vivax; Anopheles darlingi; French Guiana; Brazil; Transnational; Outbreak investigation; Indigenous south Americans; Malaria; Amazonia. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00632/74387/74081.pdf |
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| Epelboin, Yanouk; Quintric, Laure; Guevelou, Eric; Boudry, Pierre; Pichereau, Vianney; Corporeau, Charlotte. |
| Oysters play an important role in estuarine and coastal marine habitats, where the majority of humans live. In these ecosystems, environmental degradation is substantial, and oysters must cope with highly dynamic and stressful environmental constraints during their lives in the intertidal zone. The availability of the genome sequence of the Pacific oyster Crassostrea gigas represents a unique opportunity for a comprehensive assessment of the signal transduction pathways that the species has developed to deal with this unique habitat. We performed an in silico analysis to identify, annotate and classify protein kinases in C. gigas, according to their kinase domain taxonomy classification, and compared with kinome already described in other animal species.... |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00340/45069/44494.pdf |
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