Vector competence of Culex tarsalis (Diptera: Culicidae) from Iowa for a sympatric strain of Western Equine Encephalomyelitis (WEE-7738) virus

Joon-Hak Lee; Wayne A. Rowley; Kenneth B. Platt

doi:10.1603/0022-2585-37.1.194

Vector competence of Culex tarsalis (Diptera: Culicidae) from Iowa for a sympatric strain of Western Equine Encephalomyelitis (WEE-7738) virus

Joon-Hak Lee, Wayne A. Rowley, Kenneth B. Platt

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Experiments were designed to evaluate the vector competence of Culex tarsalis Coquillet from an area (Sioux City) where Cx. tarsalis is most abundant in Iowa for western equine encephalomyelitis virus (WEE-7738). WEE-7738 was isolated from Aedes trivittatus (Coquillet) collected in Ames, IA, in 1977. Infection rate, dissemination rate, multiplication efficiency, and transmission rate were determined for this virus in the SC strain of Cx. tarsalis. SC strain of Cx. tarsalis was as susceptible to WEE-7738 as Californian strains of Cx. tarsalis were to BFS1703 strain of WEE; OID₅₀ of SC Cx. tarsalis was 2.63 log TCID₅₀ per mosquito and OID₅₀ of Californian strains of Cx. tarsalis were 2.0-4.1 log PFU per mosquito. However, transmission of WEE-7738 (4.2%) by the SC strain of Cx. tarsalis was lower than those (10-60%) reported in other studies.

Original language	English
Pages (from-to)	194-197
Number of pages	4
Journal	Journal of Medical Entomology
Volume	37
Issue number	1
DOIs	https://doi.org/10.1603/0022-2585-37.1.194
State	Published - 1 Jan 2000

Keywords

Culex tarsalis
Iowa
Multiplication
Susceptibility
Transmission
Western equine encephalomyelitis virus

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10.1603/0022-2585-37.1.194

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title = "Vector competence of Culex tarsalis (Diptera: Culicidae) from Iowa for a sympatric strain of Western Equine Encephalomyelitis (WEE-7738) virus",

abstract = "Experiments were designed to evaluate the vector competence of Culex tarsalis Coquillet from an area (Sioux City) where Cx. tarsalis is most abundant in Iowa for western equine encephalomyelitis virus (WEE-7738). WEE-7738 was isolated from Aedes trivittatus (Coquillet) collected in Ames, IA, in 1977. Infection rate, dissemination rate, multiplication efficiency, and transmission rate were determined for this virus in the SC strain of Cx. tarsalis. SC strain of Cx. tarsalis was as susceptible to WEE-7738 as Californian strains of Cx. tarsalis were to BFS1703 strain of WEE; OID50 of SC Cx. tarsalis was 2.63 log TCID50 per mosquito and OID50 of Californian strains of Cx. tarsalis were 2.0-4.1 log PFU per mosquito. However, transmission of WEE-7738 (4.2%) by the SC strain of Cx. tarsalis was lower than those (10-60%) reported in other studies.",

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AB - Experiments were designed to evaluate the vector competence of Culex tarsalis Coquillet from an area (Sioux City) where Cx. tarsalis is most abundant in Iowa for western equine encephalomyelitis virus (WEE-7738). WEE-7738 was isolated from Aedes trivittatus (Coquillet) collected in Ames, IA, in 1977. Infection rate, dissemination rate, multiplication efficiency, and transmission rate were determined for this virus in the SC strain of Cx. tarsalis. SC strain of Cx. tarsalis was as susceptible to WEE-7738 as Californian strains of Cx. tarsalis were to BFS1703 strain of WEE; OID50 of SC Cx. tarsalis was 2.63 log TCID50 per mosquito and OID50 of Californian strains of Cx. tarsalis were 2.0-4.1 log PFU per mosquito. However, transmission of WEE-7738 (4.2%) by the SC strain of Cx. tarsalis was lower than those (10-60%) reported in other studies.

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Vector competence of Culex tarsalis (Diptera: Culicidae) from Iowa for a sympatric strain of Western Equine Encephalomyelitis (WEE-7738) virus

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