Arid
DOI10.1603/0022-2585(2008)45[1126:DVICDC]2.0.CO;2
Does Variation in Culex (Diptera: Culicidae) Vector Competence Enable Outbreaks of West Nile Virus in California?
Reisen, William K.; Barker, Christopher M.; Fang, Ying; Martinez, Vincent M.
通讯作者Reisen, William K.
来源期刊JOURNAL OF MEDICAL ENTOMOLOGY
ISSN0022-2585
EISSN1938-2928
出版年2008
卷号45期号:6页码:1126-1138
英文摘要

Since the invasion of California by West Nile virus (family Flaviviridae, genus Flavivirus WNV) in 2003, we have annually monitored vector competence for the NY99 strain in Culex tarsalis Coquillett, Culex pipiens quinquefasciatus Say, Culex p. pipiens L., and Culex stigmatosoma Dyar populations from four areas: deserts of Coachella Valley, densely urbanized maritime Los Angeles, southern San Joaquin Valley in Kern County, and southern Sacramento Valley near Davis in Sacramento was the most competent vector species, followed by Cx. tarsalis and the Cx. pipiens complex. The median infections dose (ID50) of WNV required to infect 50% of the F1 female progeny reared from wild-caught females, a measure of mesenteronal susceptibility, ranged between 5 and 8 log(10) plaque forming units/ml and was not correlated with annual human case incidence or summer maximun likelihood mosquito infection estimates. Odds ratios comparing nonoutbreak years with referent outbreak years were variable and failed to show a distinct pattern for Cx. tarsalis or Cx. pipiens complex females. Apparently factors other than midgut susceptibility within the ranges we measured enabled WNV outbreaks in California. Culex populations remained competent for St. Louis encephalitis virus, indicating that the disappearance of this virus was not related to a loss of vector competence.


英文关键词vector competence West Nile virus St. Louis encephalitis virus Culex tarsalis Culex pipiens complex
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000260661000021
WOS关键词LOUIS ENCEPHALITIS VIRUSES ; TARSALIS DIPTERA ; EQUINE ENCEPHALOMYELITIS ; NEW-YORK ; PIPIENS-QUINQUEFASCIATUS ; EXPERIMENTAL-INFECTION ; GENETIC-VARIATION ; AMERICAN CROWS ; HYBRID ZONE ; MOSQUITOS
WOS类目Entomology ; Veterinary Sciences
WOS研究方向Entomology ; Veterinary Sciences
来源机构University of California, Davis
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158323
作者单位Univ Calif Davis, Sch Vet Med, Dept Pathol Microbiol & Immunol, Ctr Vectorborne Dis, Davis, CA 95616 USA
推荐引用方式
GB/T 7714
Reisen, William K.,Barker, Christopher M.,Fang, Ying,et al. Does Variation in Culex (Diptera: Culicidae) Vector Competence Enable Outbreaks of West Nile Virus in California?[J]. University of California, Davis,2008,45(6):1126-1138.
APA Reisen, William K.,Barker, Christopher M.,Fang, Ying,&Martinez, Vincent M..(2008).Does Variation in Culex (Diptera: Culicidae) Vector Competence Enable Outbreaks of West Nile Virus in California?.JOURNAL OF MEDICAL ENTOMOLOGY,45(6),1126-1138.
MLA Reisen, William K.,et al."Does Variation in Culex (Diptera: Culicidae) Vector Competence Enable Outbreaks of West Nile Virus in California?".JOURNAL OF MEDICAL ENTOMOLOGY 45.6(2008):1126-1138.
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