Équipe [Royale] Union Saint-Gilloise, ([prix] Gondrand), Colombes, 9/11/19 : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 56838

Molecular identification of Saint Louis encephalitis virus genotype IV in Colombia

Saint Louis encephalitis virus (SLEV) is a member of the Japanese-encephalitis virus serocomplex of the genus Flavivirus. SLEV is broadly distributed in the Americas and the Caribbean Islands, where it is usually transmitted by mosquitoes of the genus Culex and primarily to birds and mammalian-hosts. Humans are occasionally infected by the virus and are dead-end hosts. SLEV causes encephalitis in temperate regions, while in tropical regions of the Americas, several human cases and a wide biological diversity of SLEV-strains have been reported. The phylogenetic analysis of the envelope (E) protein genes indicated eight-genotypes of SLEV with geographic overlap. The present paper describes the genotyping of two SLEV viruses detected in mosquito-pools collected in northern Colombia (department of Cordoba). We used reverse transcription-polymerase chain reaction to amplify a fragment of theE-gene to confirm the virus identity and completeE-gene sequencing for phylogenetic analysis and genotyping of the two-SLEV viruses found circulating in Córdoba. This is the first report of SLEV genotype IV in Colombia (Córdoba) in mosquitoes from a region of human inhabitation, implicating the risk of human disease due to SLEV infection. Physicians should consider SLEV as a possible aetiology for undiagnosed febrile and neurologic syndromes among their patients who report exposure to mosquito-bites.

Soissons, vue d'ensemble de la cathédrale [Saint-Gervais-et-Saint-Protais, dégâts dus à la guerre] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55115

Soissons, l'intérieur de la cathédrale [Saint-Gervais-et-Saint-Protais, dégâts dus à la guerre] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55110

Soissons, la cathédrale [Saint-Gervais-et-Saint-Protais], la nef coupée en deux [dégâts dus à la guerre] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55112

Soissons, façade de la cathédrale [Saint-Gervais-et-Saint-Protais], les portails [dégâts dus à la guerre] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55111

Équipe des États-Unis [épreuves d'aviron dans le bassin de Saint-Cloud-Suresnes] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55035

Équipe du Canada [épreuves d'aviron dans le bassin de Saint-Cloud-Suresnes] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55044

Soissons, cathédrale [Saint-Gervais-et-Saint-Protais], le transept Nord [dégâts dus à la guerre] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55117

Soissons, portail Nord du transept [de la cathédrale Saint-Gervais-et-Saint-Protais, dégâts dus à la guerre] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 55116

2/6/19, remise du traité de paix aux Autrichiens, sortie de M. Sonnino [préliminaires au traité de Saint-Germain-en-Laye du 10 septembre, au château] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 54215

Mg/Ca and Sr/Ca ratios of ostracod valves from living species of Lake Geneva

The Mg/Ca and Sr/Ca ratios of living ostracods belonging to 15 different species and sampled monthly over a one year-cycle at five sites (2, 5, 13, 33, and 70 m water depths) in western Lake Geneva (Switzerland) are compared to the oxygen and carbon isotope compositions measured on the same samples as well as to the temperature and chemical composition of the water (δ18OH2O, δ13CDIC, Mg/CaH2O, and Sr/CaH2O) at the time of ostracod calcification. The results indicate that trace element incorporation varied at the species level, mainly because of the ecological and biological differences between the different species (life-cycle, (micro-)habitat preference, biomineralisation processes) and the control thereof on trace element incorporation of the ostracods. In littoral zones, the Mg/Ca and Sr/Ca of ostracod valves increase as temperature and Mg/Ca and Sr/Ca of water increase during spring and summer, hence reflecting mainly seasonal variations. However, given that for Lake Geneva the Mg/Ca and Sr/Ca of water also vary with temperature, it is not possible to distinguish the effects of temperature from those of changes in chemical composition of water on the trace element content in ostracod valves. Results support that both water temperature and water Mg/Ca and Sr/Ca ratios control the final trace element content of Cyprididae valves. In contrast, the trace element content of species living in deeper zones of the basin is influenced by variations in the chemical composition of the pore water for the infaunal species. Trace element content measured for these specimens cannot, therefore, be used to reconstruct the compositions of the water lake bottom. In addition, incorporation of Mg and Sr into the shell differs from one family, sub-family, or even species to the other. This suggests that the distinctive Mg and Sr partition coefcients for the analysed taxa result from different valve calcification strategies that may be phylogenetic.