진딧물類에 대한 天敵 무당벌레의 捕食能力 및 그들의 選擇毒性에 關한 硏究 = Studies on the Aphidivorous Activity of Predacious Ladybeetle Harmonia axyridis and their Selective Toxicity

다국어 초록 (Multilingual Abstract)

The experiment was conducted to evaluate the development of the predacious beetle Hamonia axyridis fed on the aphis Aphis gossypii, the aphidivorous activity of the beetle and the selective toxicity between the beetle and the three aphids, Myzus persicae, Aphis gossypii and aphis citricola at the rate of recommended concentrations of the selected aphidicides in the laboratory.
The developmental periods(day) of the larva stage , the pupa stage, the predating after emergence, the preoviposition after mating and the egg of the beetle recorded 12.6, 6.35, 15.29, 15.79 and 2.71, respecitively. The aphidivorous activity greatly differed with the developmental stages of the beetle and the 4th instar consumed ca. 168.9 aphids and the adults consumed ca. 164.2 aphids per day, when provided with an abundant number of the Aphis gossypii. The aphidivorous preference of the beetle within the mixed infestations of the three aphids shown the 100%, 99.2% and 92% for Myzus persicae, A. gossypii and A. citricola, respectively.
In studies of the mortality of the 4th and the adult of beetle, the acephate 50 Wp and cyhalothrin 1 Ec shown the highly toxicity as over ca.93%, while the pirimicarb 25 Wp shown the low toxicity as below ca. 4-38%. Also the studies of mortality of the three aphids at the same rate of the che-micals, the Myzus persicae, shown the highly toxicity as over ca.98% at the all chemicals and the A. gossypii and A. citricola shown highly toxicity as over ca.80% at the acephate and the cyhalothrin but the pirimicarb shown the low mortality as below ca.8% against the Aphis gossypii and the Aphis citricola. In these results, the pirimicarb shown the highly selective toxicity between the three aphids and the predacious beetle H. axyridis.

목차 (Table of Contents)

• 緖言
• 材料 및 方法
• 結果 및 考察
• 摘要
• 引用文獻