Vector Competence of Peruvian Mosquitoes (Diptera: Culicidae) for Epizootic and Enzootic Strains of Venezuelan Equine Encephalomyelitis Virus
| Autor: | Douglas M. Watts, James W. Jones, Terry A. Klein, David J. Dohm, R. Fernandez, C. Calampa, Russell E. Coleman, Michael J. Turell, Michael R. Sardelis |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Psorophora
animal structures viruses Alphavirus complex mixtures Virus Encephalitis Virus Venezuelan Equine Cricetinae medicine Animals Humans Epizootic General Veterinary biology fungi virus diseases medicine.disease biology.organism_classification Virology Coquillettidia Insect Vectors Culex Culicidae Infectious Diseases Insect Science Vector (epidemiology) Enzootic Female Parasitology Mansonia |
| Zdroj: | Journal of Medical Entomology. 37:835-839 |
| ISSN: | 1938-2928 0022-2585 |
| Popis: | Mosquitoes collected in the Amazon Basin, near Iquitos, Peru, were evaluated for their susceptibility to epizootic (IAB and IC) and enzootic (ID and IE) strains of Venezuelan equine encephalomyelitis (VEE) virus. After feeding on hamsters with a viremia of approximately 10(8) plaque-forming units of virus per milliliter, Culex (Melanoconion) gnomatus Sallum, Huchings,Ferreira, Culex (Melanoconion) vomerifer Komp, and Aedes fulvus (Wiedemann) were highly susceptible to infection with all four subtypes of VEE virus (infection ratesor = 87%). Likewise, Psorophora albigenu (Peryassu) and a combination of Mansonia indubitans DyarShannon and Mansonia titillans (Walker) were moderately susceptible to all four strains of VEE virus (infection ratesor = 50%). Although Psorophora cingulata (Fabricius) and Coquillettidia venezuelensis (Theobald) were susceptible to infection with each of the VEE strains, these two species were not efficient transmitters of any of the VEE strains, even after intrathoracic inoculation, indicating the presence of a salivary gland barrier in these species. In contrast to the other species tested, both Culex (Melanoconion) pedroi SirivanakarnBelkin and Culex (Culex) coronator DyarKnab were nearly refractory to each of the strains of VEE virus tested. Although many of the mosquito species found in this region were competent laboratory vectors of VEE virus, additional studies on biting behavior, mosquito population densities, and vertebrate reservoir hosts of VEE virus are needed to incriminate the principal vector species. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|