[Insecticide tests for resistance on adults of Anopheles sinensis and Culex tritaeniorhynchus in Korea]
During the summer season(July-August) in 1967, the insecticide tests for resistance on adult A. sinensis and C. tritaeniorhynchus were carried out in Gobu-Myun Jeongup-Gun, Chollapuk-Do, where many Japanese encephalitis cases occur every year. 1)The mortality by 4.0% DDT in A. sinensis was 88.9% and by 4.0% dieldrin was 84.4%. Therefore the LC-50 of DDT for A. sinensis was 1.75%, while LC-50 of dieldrin was 1.1%. 2)The mortality by 4.0% DDT in C. tritaeniorhynchus was 36.7%, and by 4.0% dieldrin was 6.0% 3)The result indicates that A. sinensis in Korea is susceptible to DDT and resistant to dieldrin. 4)C. tritaeniorhynchus is highly resistant to both DDT and dieldrin.
Lee
Kwan Woo
KW
Department of Biology, Liberal Arts and Science College, Kyung Hee University, Seoul, Korea.