아카시아진딧물의 생물적 방제를 위한 基礎資料를 얻고져 ’83년 4월부터 9월까지 鷄龍山 地域과 大田近郊에서 아카시아 진딧물에 寄生하는 寄生蜂들의 種類와 이에 따른 寄生活動 狀況(mummy形成)과 이들 第1次 寄生蜂에 寄生하는 重寄生蜂과의 寄主選擇關係및 主要寄生蜂들의 mummy形成率, 藏卵數, 生存期間등을 調査한 結果는 다음과 같다. 1. 아카시아 진딧물의 寄生하는 진디벌은 모두 8種이 採集되었으며 이중 Binodoxys nearctaphidius Mackauer, Lipolexis scutellaris Mackauer, Lysiphlebus salicaphis(Fitch), Trioxys hokkaidensis Takada 등 4種은 韓國未記錄種이었다. 3. 野外에서 採集된 509個의 寄生당한 mummy中 잔디벌이 44.8%, 重寄生蜂은 43.8%를 차지하고 있었다. 3. 아카시아 진딧물에 寄生하는 主要寄生蜂으로는 Lysiphlebus ambiguus, Lysiphlebus salicaphis, Lysiphlebia japonica, Lipolexis scutellaris 등이 였으며 이들의 比率은 各各 31.6%, 18.8%, 16.7%, 11.4%였다(性比에 있어서는 全寄生蜂들이 높은 편이었으며 特히 L. ambiguus의 경우는 0.72로서 가장 높았다.) 4. 重寄生蜂은 Lygocerus testacemonus Kieffer, Protaphelinus nikolskajae (Jasnosh), Eucoila sp. Gastrancistrus sp., Ardilea convexa(Walker), Asaphes vulgaris Walker 등 6種이 採集되었으며 이들은 모두 韓國未記錄이었으며, 이들중 Eucoila sp., A. vulgaris, A. convexa등 3種은 진디벌에 對한 寄生率이 各各 39.9%, 34.1%, 19.7%로서 이들은 아카시아 진딧벌의 活動에 抑制要因으로 作用하였다. 5. 진디벌중 Lipolexis scutellaris는 6種의 重寄生蜂中 3種에 依해서만 攻擊을 받고 있었으며 나머지 種들은 거의 모든 重寄生蜂으로부터 攻擊을 받았다. 6. 主要 진디벌인 Lysiphlebus ambiguus, Lysiphlebia japonica에 對한 寄生活動能力을 比較한 結果, L. ambiguus가 寄生活動能力이 컸었다. 7. 藏卵數 調査結果, Lysiphlebus ambiguus와 Lysiphlebia japonica는 各各 272個, 279個로서 差異는 없었으나 mummy形成率에 있어서는 각각 182個(66.9%), 120個(43.0%)로서 顯著한 差異를 보였다. 8. 진디벌 成?과 重寄生蜂 成?의 生存期間을 꿀을 먹이로 使用하여 調査한 結果 진디벌의 平均壽命은 2~3日인데 比하여 重寄生蜂은 15.8~21.5日로서 重寄生蜂들이 훨씬 길었다.
A biological study was done on primary parasites and hyperparasites of cow-pea aphid, Aphis craccivora Koch, collected from Mt. Gyeryong and Daejeon area during the period from April to September 1983 was. The results of mummification of primary parasites, host selectivity between primary parasites and hyperparasites and ratio of mummification, no. of ar chegonia and longevity of important species were obtained as follows ; Eight species of Aphidiidae were identified and listed and four of them, Binodoxys nearactaphidius Mackauer, Lipolexis scutellaris Mackauer, Lysiphlebus salicaphis(Fitch)and Trioxys hokkaidensis Takada found for the first time in Korea. Among the 509 mummies collected in the field, adult Aphidiid and adult hyperparasites were 44.8%, and 43.8%, respectively. Lysiphlebus ambiguus, Lysiphlebus salicaphis, Lysiphlebia japonica and Lipolexis scutellaris were a few of important species attacking cow-pea aphid and the rate of their occurrences were 31.6%, 18.8%, 16.7% and 11.4%. respectively. All the hyperparasites collected from cow-pea aphid were recorded for the first time in Korea ; those were Lygocerus testaceimonus Kieffer, Protaphelinus nikolskajae(Jasnosh), Eucoila sp., Gastranscistrus sp., Ardilea convexa(Walker), Asaphes vulgaris Walker. Among the collected hyperparasites, Eucoila sp., A. vulgaris and A. convexa were dominant species and their occurence rate was 39.9%, 34.1% and 19.7%. respectively. As a results of analysis on parasite-hyperparasite interrelationship in cow-pea aphid, Lipolexis scutellaris was attacked from 3 out of 6 hyperparasites and the others was attacked from almost all the hyperparasites. Lysiphlebus ambiguus was higher than Lysiphlebia japonica in the ability of parasitism. There was no difference between Lysiphlebus ambiguus(272) and Lysiphlebia japonica(279) in number of archegonia, but L. ambiguus(66.9%) was higher than L. japonica(43.0%) in the rate of mummification to archegonia. The longevity of Aphidiidae and hyperparasites was investigated by feeding honey. The results showed that hyperparasites had lived 15.8 to 21.5 days, while Aphiidiidae lived only 2 to 3 days.