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Abstract ▼ AI-Helper

Studies on seasonal and annual fluctuations in mosquito population size were carried out at 3 localities of Taegu in 1988-1992. Japanese encephalitis antibody rate were examined on 860 swines at 27 Dongs (administrative unit). The results are summurized as follows: (1) The fauna of mosquitoes collec...

Studies on seasonal and annual fluctuations in mosquito population size were carried out at 3 localities of Taegu in 1988-1992. Japanese encephalitis antibody rate were examined on 860 swines at 27 Dongs (administrative unit). The results are summurized as follows: (1) The fauna of mosquitoes collected by light trap was found to be 9 species belonging to 8 Culicinae and 1 Anophelinae. The three dominant species were An. sinensis, C. pipiens pallens and C. tritaeniorhynchus, (2) C. tritaeniorhynchus showed the highest peak time in September. These correspond to rising time of Japanese encephalitis antibody rate. (3) The population density of An. sinensis showed the highest peak in 1989, but the lowest peak in 1991. (4) C. pipiens pallens were common in annual fluctuation. (5) The population density of An. sinensis and C. pipiens pallens had the highest peak time in July and August, C. tritaeniorhynchus showed the maximum activity of September. (6) Positive rate of Japanese encephalitis virus was the highest in 1991, and the whole conversion time was from end of August to September.

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