The effect of the ionization energy on the common house mosquito, Culex pipiens, pupa was investigated as the hatching rate, longevity and detoxification enzyme activity. The longevity of adult emerging in the pupa decreased depending on the exposure dose of Gray (Gy) in Cx. pipiens. The hatching rate of the F1 generation egg derived from Cx. pipiens pupa treated up to 70 Gy did not show any difference with the control, but the eggs did not hatch 100% at 120 Gy exposure. These results showed that Cx. pipiens was sterilized at 120 Gy. Several detoxifying enzyme (GST, non-specific esterase and MFO) activity of Cx. pipiens adult emerged from pupa irradiated with 120 Gy was investigated. The difference in activity was observed in female than in male irradiated with electron beam. As a result, electron beam irradiation seems to affect enzyme activity as well as induce infertility of Cx. pipiens.

• Hyun Kyung Kim(Department of Plant Medicine, Chungbuk National University)
• Seung Ju Lee(Department of Plant Medicine, Chungbuk National University)
• Dae Hoon Jeong(Department of Plant Medicine, Chungbuk National University)
• Geun Ho Park(Department of Plant Medicine, Chungbuk National University)
• Hyun-Na Koo(Department of Plant Medicine, Chungbuk National University)
• Gil-Hah Kim(Department of Plant Medicine, Chungbuk National University)