INVESTIGADORES
DIAZ Luis Adrian
congresos y reuniones científicas
Título:
CAN THE HOST DENSITY RESCUE THE VIRAL TRANSMISSION? EFFECTS OF THE AVIAN-MOSQUITO COMMUNITIES ON THE ST. LOUIS ENCEPHALITIS VIRUS ACTIVITY
Autor/es:
AI. QUAGLIA; G. ALLBRIEU LLINÁS; MS. CONTIGIANI, ; A. DIAZ
Lugar:
New Orleans
Reunión:
Congreso; 67th Anual Meeting American Society of Tropical Medicine and Hygiene; 2018
Institución organizadora:
American Society of Tropical Medicine and Hygiene
Resumen:
Arbovirus represents an ecological clustered of arthropod borneviruses. They depend of the interaction among vectors and hosts, andthose might be driven by the variations at community, populationand individuals vector-host level. Dilution effects predicts an scenario,where the transmission risk, on multi-host systems, is reduced as hostdiversity increases. Here, we focused on the effects of the structure andcomposition of the avian-mosquito community on the activity of St. Louisencephalitis virus (SLEV, Flavivirus). Avian and mosquito communities andthe frequency of SLEV infection in Culex mosquitoes were prospectedduring three transmission seasons across the periurban-urban landscape inCordoba city, central area of Argentina. Hypothesis related at communitystructure and density avian-mosquito level were represented and analyzedby general linear mixed models, when environmental and temporalviral activity heterogeneity were explicitly considered. Then, modelsperformance were ranked following the Information Theory framework.The presence and the transmission of SLEV were not explained by neitherof the diversity measures explored. Although, Eared Dove and mosquitodensity were related with at least two-folds increases in the number ofSLEV infected Culex. Dilution effect exerted by biodiversity might not bedriving the SLEV activity in the Cordoba city, meanwhile viral trait as thegeneralist host use could provide resilience to transmission when thecomposition of host and vector change. Finally, the results support anamplification effect by the density of particular community members onthe transmission and amplification of SLEV such as Eared Dove.