Abstract
Inter- and intraspecific transfer of West Nile virus (family Flaviviridae, genus Flavivirus, WNV) occurred infrequently when donor Culex tarsalis Coquillett fed concurrently on house finches with recipient Culex quinquefasciatus Say and Cx. tarsalis. Five of six of these house finches had WNV in blood samples collected by jugular venipuncture 30-45 min postfeeding, with titers ranging from 2.3 to 4.2 log 10 plaque-forming units (PFU)/ml. After 2-wk incubation at 26°C, three Cx. quinquefasciatus and one Cx. tarsalis of 230 blood-fed recipients were infected, of which one Cx. quinquefasciatus was capable of transmission. Our data indicated that infectious female mosquitoes feeding on small vertebrates create a nonpropagative viremia capable of infecting concurrently cofeeding females. The proportion of recipients infected is likely related to the amount of virus expectorated by donor females, the blood volume of the vertebrate host, and the susceptibility of the cofeeding mosquitoes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 299-302 |
| Number of pages | 4 |
| Journal | Journal of Medical Entomology |
| Volume | 44 |
| Issue number | 2 |
| State | Published - Mar 1 2007 |
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Keywords
- Culex quinquefasciatus
- Culex tarsalis
- Nonviremic transmission
- West Nile virus
ASJC Scopus subject areas
- Insect Science
- veterinary(all)
Cite this
Is nonviremic transmission of West Nile virus by Culex mosquitoes (Diptera : Culicidae) nonviremic? / Reisen, William; Fang, Ying; Martinez, Vincent.
In: Journal of Medical Entomology, Vol. 44, No. 2, 01.03.2007, p. 299-302.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Is nonviremic transmission of West Nile virus by Culex mosquitoes (Diptera
T2 - Culicidae) nonviremic?
AU - Reisen, William
AU - Fang, Ying
AU - Martinez, Vincent
PY - 2007/3/1
Y1 - 2007/3/1
N2 - Inter- and intraspecific transfer of West Nile virus (family Flaviviridae, genus Flavivirus, WNV) occurred infrequently when donor Culex tarsalis Coquillett fed concurrently on house finches with recipient Culex quinquefasciatus Say and Cx. tarsalis. Five of six of these house finches had WNV in blood samples collected by jugular venipuncture 30-45 min postfeeding, with titers ranging from 2.3 to 4.2 log 10 plaque-forming units (PFU)/ml. After 2-wk incubation at 26°C, three Cx. quinquefasciatus and one Cx. tarsalis of 230 blood-fed recipients were infected, of which one Cx. quinquefasciatus was capable of transmission. Our data indicated that infectious female mosquitoes feeding on small vertebrates create a nonpropagative viremia capable of infecting concurrently cofeeding females. The proportion of recipients infected is likely related to the amount of virus expectorated by donor females, the blood volume of the vertebrate host, and the susceptibility of the cofeeding mosquitoes.
AB - Inter- and intraspecific transfer of West Nile virus (family Flaviviridae, genus Flavivirus, WNV) occurred infrequently when donor Culex tarsalis Coquillett fed concurrently on house finches with recipient Culex quinquefasciatus Say and Cx. tarsalis. Five of six of these house finches had WNV in blood samples collected by jugular venipuncture 30-45 min postfeeding, with titers ranging from 2.3 to 4.2 log 10 plaque-forming units (PFU)/ml. After 2-wk incubation at 26°C, three Cx. quinquefasciatus and one Cx. tarsalis of 230 blood-fed recipients were infected, of which one Cx. quinquefasciatus was capable of transmission. Our data indicated that infectious female mosquitoes feeding on small vertebrates create a nonpropagative viremia capable of infecting concurrently cofeeding females. The proportion of recipients infected is likely related to the amount of virus expectorated by donor females, the blood volume of the vertebrate host, and the susceptibility of the cofeeding mosquitoes.
KW - Culex quinquefasciatus
KW - Culex tarsalis
KW - Nonviremic transmission
KW - West Nile virus
UR - http://www.scopus.com/inward/record.url?scp=34247464749&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247464749&partnerID=8YFLogxK
M3 - Article
C2 - 17427700
AN - SCOPUS:34247464749
VL - 44
SP - 299
EP - 302
JO - Journal of Medical Entomology
JF - Journal of Medical Entomology
SN - 0022-2585
IS - 2
ER -