Vector competence of three Venezuelan mosquitoes (Diptera : Culicidae) foran epizootic IC strain of Venezuelan equine encephalitis virus

Authors
Citation
Mj. Turell, Vector competence of three Venezuelan mosquitoes (Diptera : Culicidae) foran epizootic IC strain of Venezuelan equine encephalitis virus, J MED ENT, 36(4), 1999, pp. 407-409
Citations number
14
Categorie Soggetti
Entomology/Pest Control
Journal title
JOURNAL OF MEDICAL ENTOMOLOGY
ISSN journal
00222585 → ACNP
Volume
36
Issue
4
Year of publication
1999
Pages
407 - 409
Database
ISI
SICI code
0022-2585(199907)36:4<407:VCOTVM>2.0.ZU;2-Y
Abstract
Experimental studies were undertaken to evaluate the vector competence of s elected mosquito species [Aedes taeniorhynchus (Wiedemann), Culex declarato r Dyar and Knab, and Mansonia titillans (Walker)] from northwestern Venezue la for the epizootic (IC) strain of Venezuelan equine encephalitis (VEE) vi rus that was responsible for the 1995 outbreak of VEE in this area. Ae. tae niorhynchus was highly susceptible to infection (94% of 35), and 89% had a disseminated infection. Virus-exposed Ae. taeniorhynchus that refed on susc eptible hamsters readily transmitted virus, confirming that this species wa s an efficient vector of VEE virus. In contrast, only 1 of 28 (4%) Cx. decl arator was infected, and that individual did not develop a disseminated inf ection, Ma. titillans was moderately susceptible (3 of 8 infected, 38%), an d 2 (25%) of these had a disseminated infection. These data indicate that A e. taeniorhynchus was an important epizootic vector during the 1995 VEE out break in Columbia and Venezuela.