|
|
|
|
|
| Le Roux, Frederique. |
| Global changes linked to increases in temperature and ocean acidification, but also to more direct anthropogenic influences such as aquaculture, have caused a worldwide increase in the reports of Vibrio-associated illnesses affecting humans and also animals such as shrimp and molluscs. Investigation of the emergence of Vibrio pathogenesis events requires the analysis of microbial evolution at the gene, genome and population levels, in order to identify genomic modifications linked to increased virulence, resistance and/or prevalence, or to recent host shift. From a more applied point of view, the elucidation of virulence mechanisms is a prerequisite to devising prophylactic methods to fight infectious agents. In comparison with human pathogens, fairly... |
| Tipo: Text |
Palavras-chave: Écologie; Émergence; Évolution; Invertébrés marins; Vibriose; Virulence; Ecology; Emergence; Evolution; Marine invertebrate; Vibriosis; Virulence. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00344/45560/46722.pdf |
| |
|
|
| Daly Yahia, Mn; Goy, J; Daly Yahia-kefi, O. |
| The Medusae of Tunis Gulf (25 species) are qualitatively the third zooplanktonic group after Tintinnids and Copepods. Anthomedusae (eight species), Trachymedusae (five species) and Leptomedusae (four species) represent the major part among the 20 species of Hydromedusae identified during our study (December 1993-November 1995). However, the Limnomedusae (two species) and the Narcomedusae (one species) are poorly represented. In the Bay of Tunis, Obelia spp., the most common and dominant species, command the quantitative fluctuations of Hydromedusae and reach exceptionally the density of 25 800 ind. m(-3). Within the Scyphomedusae (five species), Pelagia noctiluca is the most common species which outbreaks in winter and autumn. Tunis Gulf seems to be,... |
| Tipo: Text |
Palavras-chave: Méduses; Écologie; Golfe de Tunis; Méditerranée sud–occidentale; Jellyfish; Ecology; Tunis Gulf; SW Mediterranean. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00321/43255/42986.pdf |
| |
|
| |
|
| |
|
| |
|
|
| Fleury, Elodie; Petton, Sebastien; Corporeau, Charlotte; Gangnery, Aline; Pouvreau, Stephane. |
| Occupying a prime position in the French coastal landscape, oyster farming is the leading contributor to the French aquaculture sector with an estimated production of 85,000 tonnes in recent years. However, since 2008, this species has been affected by recurrent massive mortality episodes triggered by the presence of viral infectious agents (of the type Herpes virus OsHV-1 μVar) in conjunction with environmental factors (i.e. temperature rise). This viral infection induces an alteration of the antimicrobial defenses and a destabilization of its microbiota. This process leads to secondary infection by opportunistic bacteria that are potentially pathogenic and multiply rapidly, causing irreversible tissue damage leading to the death of the animal. At the... |
| Tipo: Text |
Palavras-chave: Huître creuse; Physiologie; Génétique; Écologie; Réseau National. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00634/74654/74826.pdf |
| |
|
| |
|
|
|
