���温条件下における高濃度二酸化炭素処理がナミハダニ(ダニ目:ハダニ科)雌成虫および卵に及ぼす影響

Lethal effects of concentrated CO2 at 40°C on adult females and eggs of Tetranychus urticae Koch were examined. No adult female survived after 6-h exposure to 60% CO2, and almost all eggs at different ages died after 6-h treatment with 60% CO2. No marked increase in CO2 tolerance was observed as the egg stage progressed. These results suggest that both adult females and eggs of T. urticae can be controlled with the same CO2 treatment at a high temperature.