INVESTIGADORES
FLORES fernando sebastian
artículos
Título:
Vertical transmission of St. Louis encephalitis virus in Culex quinquefasciatus (Diptera: Culicidae) in Córdoba, Argentina.
Autor/es:
FERNANDO SEBASTIÁN FLORES; LUIS ADRIÁN DIAZ; GONZALO PEDRO BATALLÁN; WALTER RICARDO ALMIRÓN; MARTA SILVIA CONTIGIANI
Revista:
Vector-Borne and Zoonotic Diseases
Editorial:
Mary Ann Liebert, Inc
Referencias:
Lugar: New Yorck USA; Año: 2010 vol. 10 p. 999 - 1002
ISSN:
1530-3667
Resumen:
Arbovirus vector transmission is interrupted when the vector abundance decreases, or disappears in temperate region during winter season. Although the primary overwinter mechanism of maintenance in nature remains unknown, transovarial transmission is one of them. SLEV is an endemic Flavivirus in the temperate province of Córdoba (Argentina). The aim of this project was to detect transovarial transmission of SLEV in Culex quinquefasciatus mosquitoes. Under laboratory conditions, SLEV transovarial transmission (0.34% MIR) was detected in larvae (1:256) and adults F1 (1:406). There was no positive larva for SLEV over 2011 analyzed individuals collected in nature. This is the first study that confirmed experimental transovarial transmission of SLEV in Cx. quinquefasciatus populations from Argentina. Vertical transmission works as an overwinter mechanism for SLEV in temperate areas of Argentina. Other overwinter mechanisms (ticks as an alternative vector, non-diapausing female mosquitoes) should be considered.
