期刊
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
卷 89, 期 6, 页码 1168-1178出版社
AMER SOC TROP MED & HYGIENE
DOI: 10.4269/ajtmh.13-0219
关键词
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资金
- NIH Research grant from the National Institute of Allergy and Infectious Diseases, NIH [RO1 AI 55607]
- Sacramento-Yolo MVCD
- NIH fellowship from the Training Program in Biology of Disease Vectors [T32AI074550]
- Research and Policy for Infectious Disease Dynamics (RAPIDD) program of the Science and Technology Directorate, Department of Homeland Security
- Fogarty International Center, National Institutes of Health
The vector competence and bionomics of Culex pipiens form pipiens L. and Cx. pipiens f. molestus Forskal were evaluated for populations from the Sacramento Valley. Both f. pipiens and f. molestus females became infected, produced disseminated infections, and were able to transmit West Nile virus. Form molestus females also transmitted West Nile virus vertically to egg rafts and F, progeny, whereas f. pipiens females only transmitted to egg rafts. Culex pipiens complex from urban Sacramento blood-fed on seven different avian species and two mammalian species. Structure analysis of blood-fed mosquitoes identified K = 4 genetic clusters: f. molestus, f. pipiens, a group of genetically similar hybrids (Cluster X), and admixed individuals. When females were exposed as larvae to midwinter conditions in bioenvironmental chambers, 85% (N = 79) of aboveground Cx. pipiens complex females and 100% (N = 34) of underground f. molestus females did not enter reproductive diapause.
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