Culex Population Dynamics and West Nile Virus Transmission in East-Central Illinois

摘要: ABSTRACT Temporal changes in the abundance Culex restuans and pipiens were monitored east-central Illinois for over a decade using infusion-baited oviposition traps. The 2 species typically exhibited seasonal shift relative with mean crossover date (when proportion of egg rafts from both is equal) August 10 or 11, depending on leap year, 95% confidence interval ±10.7 days. was linearly related to last spring frost occurred average about 123 days after frost. Despite predictability crossover, weekly pattern Cx. before varied considerably, even between years similar dates. After West Nile virus became established our area, we found that transmission based gravid traps did not increase until increased Infection rates peaked within half-month period crossover....