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서울市內의 Culex pipiens L. 幼蟲의 殺蟲劑에 對한 抵抗性에 對하여

On the Resistance of Culex pipiens Mosquito Larvae from Seoul City to p, p´-DDT, γ-BHC, and Malathion

최신의학 1960년 3권 11호 p.125 ~ 128
白永漢, 金思達, 柳蓮姬,
소속 상세정보
白永漢 (  ) - 首都 醫科大學 豫防醫學敎室
金思達 (  ) - 首都 醫科大學 豫防醫學敎室
柳蓮姬 (  ) - 首都 醫科大學 豫防醫學敎室

Abstract


The test was carried out during the summer of 1959 to ascertain the degree of resistance of Culex pipiens to insecticides currently used. Culex pipiens egg rafts were collected from ditches in Seoul city and reared in the laboratory with media consistaed of the following:

Distilled water 1.0 liter
Magnesium sulfate 1.0 gram
Calcium sulfate 0.5 gram
Sodium chloride 0.5 gram

A sufficient amount of beer yeast was also used as a ´larval food. Late third and early fourth instar larvae were selected for testing. The result are summarized in the following:
The LC-50 of Culex pipiens to insecticides were 0.061 p.p.m. in p,p´-DDT, 0.045 p.p.m. in T-BHC and 0.029 p.p.m. in malathion. Comparing this with LC-50 of Orlando Laboratory normal strain, it can be pointed out that the resistance of Seoul strain showed about a ten-fold increase in DDT, and a four-fold increase in T-BHC. The resistance develpment of the Seoul strain has, however, not arisen so markedly as compared with data observed in other parts of Far Eastern areas received heavy insecticidal applications.

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