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A European epidemiological survey of Vibrio splendidus clade shows unexplored diversity and massive exchange of virulence factors ArchiMer
Nasfi, H.; Travers, Marie-agnes; De Lorgeril, Julien; Habib, C.; Sannie, T.; Sorieul, L.; Gerard, J.; Avarre, J. C.; Haffner, Philippe; Tourbiez, Delphine; Renault, Tristan; Furones, D.; Roque, A.; Pruzzo, C.; Cheslett, D.; Gdoura, R.; Vallaeys, T..
The Vibrio splendidus clade has previously been associated with epidemic outbreaks of various aquatic animals, as in the case of the cupped oyster, Crassostrea gigas. To investigate whether involved strains could present a clonal origin and to identify possible alternative background carriage animals or zooplankton, a large epidemiological survey was conducted on isolates of the splendidus clade. For this purpose, Vibrio strains were isolated from various samples including oysters, mussels, sediments, zooplankton, and sea water on the basis of a North/South gradient of the European sea water zone (Ireland, The Netherlands, France, Italy, and Spain). A total of 435 isolates were successfully associated to the V. splendidus clade using real time polymerase...
Tipo: Text Palavras-chave: VNTR; Vibrio splendidus; Epidemiology; Vsm; OmpU; Crassotrea giga; Mortality.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00255/36666/35350.pdf
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An approach to freshwater cyanobacterial production and excretion : tentative application of a deterministic model Inra
Vallaeys, T.; Feuillade, J.; Feuillade, M..
Nous avons estimé les taux de photosynthèse, de respiration et d'excrétion carboné chez Oscillatoria rubescens D.C. sous une gamme de conditions d'éclairement comprise entre 0 et 60 μE m−1 s−1 grâce à l'emploi de la méthode au14C. Un modèle d'évolution du carbone chez la cyanobactérie s'appuyant sur les équations de Hobsonet al. (1976) et prenant en compte la respiration et l'excrétion cellulaire est présenté. Ce modèle prévoit que la somme des taux de respiration et d'excrétion doit croître plus rapidement avec la lumière que le taux de photosynthèse. Il montre par ailleurs que la croissance maximale de la souche étudiée d'O. rubescens doit être trouvée à faible intensité lumineuse, environ 20 μE m−2 s−1. La lumière semble provoquer un accroissement...
Tipo: Journal Article Palavras-chave: EXCRETION CARBONEE; CARBONE 14; CYANOBACTERIE CYANOBACTERIUM; OSCILLATORIA RUBESCENS; PHOTOSYNTHETIC RATE; EXCRETION RATE; RESPIRATION RATE; 14CARBON; SIMULATION; MATHEMATICAL MODEL.
Ano: 1989 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9100014376019561&uri=/notices/prodinra1/2011/03/
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