Abstract
Aedes albopictus (Skuse) is an Asiatic mosquito species that has spread and colonized all continents except Antarctica. It has major public health importance because it is a potential vector of several pathogens. The objectives of our study were to analyze the vector competence of urban and rural strains of Ae. albopictus from São Paulo State (Brazil) for Venezuelan equine encephalitis virus (VEE) subtypes IC, ID, and IF, and to evaluate the effect of infection with subtype IC of VEE on mosquito longevity. Both mosquito strains were susceptible to subtypes IC and ID, but the infection rate for subtype IF was low. Infection and transmission rates of Ae. albopictus for subtype IC were similar to those reported for Ochlerotatus taeniorhynchus (Wiedemann). The high infection, dissemination, and transmission rates for subtype ID reported for Oc. fulvus (Wiedemann) and Culex (Melanoconion) spp. are comparable with those found in this study. We found significant differences in the susceptibility to subtype IC between rural and urban populations of São Paulo. Significant survival rate differences were observed between uninfected and infected mosquitoes, but there were no differences in survival between rural and urban mosquito strains.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 522-527 |
| Number of pages | 6 |
| Journal | Journal of Medical Entomology |
| Volume | 40 |
| Issue number | 4 |
| State | Published - Jul 2003 |
| Externally published | Yes |
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Keywords
- Aedes albopictus
- Longevity
- Mosquito strains
- Vector competence
- Venezuelan equine encephalitis
ASJC Scopus subject areas
- Insect Science
- veterinary(all)
Cite this
Vector competence of rural and urban strains of Aedes (Stegomyia) albopictus (Diptera : Culicidae) from São Paulo State, Brazil for IC, ID, and IF subtypes of Venezuelan equine encephalitis virus. / Fernández, Z.; Moncayo, A. C.; Carrara, A. S.; Forattini, O. P.; Weaver, Scott.
In: Journal of Medical Entomology, Vol. 40, No. 4, 07.2003, p. 522-527.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vector competence of rural and urban strains of Aedes (Stegomyia) albopictus (Diptera
T2 - Culicidae) from São Paulo State, Brazil for IC, ID, and IF subtypes of Venezuelan equine encephalitis virus
AU - Fernández, Z.
AU - Moncayo, A. C.
AU - Carrara, A. S.
AU - Forattini, O. P.
AU - Weaver, Scott
PY - 2003/7
Y1 - 2003/7
N2 - Aedes albopictus (Skuse) is an Asiatic mosquito species that has spread and colonized all continents except Antarctica. It has major public health importance because it is a potential vector of several pathogens. The objectives of our study were to analyze the vector competence of urban and rural strains of Ae. albopictus from São Paulo State (Brazil) for Venezuelan equine encephalitis virus (VEE) subtypes IC, ID, and IF, and to evaluate the effect of infection with subtype IC of VEE on mosquito longevity. Both mosquito strains were susceptible to subtypes IC and ID, but the infection rate for subtype IF was low. Infection and transmission rates of Ae. albopictus for subtype IC were similar to those reported for Ochlerotatus taeniorhynchus (Wiedemann). The high infection, dissemination, and transmission rates for subtype ID reported for Oc. fulvus (Wiedemann) and Culex (Melanoconion) spp. are comparable with those found in this study. We found significant differences in the susceptibility to subtype IC between rural and urban populations of São Paulo. Significant survival rate differences were observed between uninfected and infected mosquitoes, but there were no differences in survival between rural and urban mosquito strains.
AB - Aedes albopictus (Skuse) is an Asiatic mosquito species that has spread and colonized all continents except Antarctica. It has major public health importance because it is a potential vector of several pathogens. The objectives of our study were to analyze the vector competence of urban and rural strains of Ae. albopictus from São Paulo State (Brazil) for Venezuelan equine encephalitis virus (VEE) subtypes IC, ID, and IF, and to evaluate the effect of infection with subtype IC of VEE on mosquito longevity. Both mosquito strains were susceptible to subtypes IC and ID, but the infection rate for subtype IF was low. Infection and transmission rates of Ae. albopictus for subtype IC were similar to those reported for Ochlerotatus taeniorhynchus (Wiedemann). The high infection, dissemination, and transmission rates for subtype ID reported for Oc. fulvus (Wiedemann) and Culex (Melanoconion) spp. are comparable with those found in this study. We found significant differences in the susceptibility to subtype IC between rural and urban populations of São Paulo. Significant survival rate differences were observed between uninfected and infected mosquitoes, but there were no differences in survival between rural and urban mosquito strains.
KW - Aedes albopictus
KW - Longevity
KW - Mosquito strains
KW - Vector competence
KW - Venezuelan equine encephalitis
UR - http://www.scopus.com/inward/record.url?scp=1642418271&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1642418271&partnerID=8YFLogxK
M3 - Article
C2 - 14680121
AN - SCOPUS:1642418271
VL - 40
SP - 522
EP - 527
JO - Journal of Medical Entomology
JF - Journal of Medical Entomology
SN - 0022-2585
IS - 4
ER -