본 연구에서는 복숭아혹진딧물의 포식 기생자인 콜레마니진디벌의 기능반응을 조사하였다. 이산화탄소 농도별(400, 600, 1000ppm) 복 숭아혹진딧물 밀도를 달리하여(2, 4, 8, 16, 32, 64, 128마리) 콜레마니진디벌 한 마리를 24시간 동안 노출시켰다. 각 이산화탄소 처리에서 콜레 마니진디벌은 제 3 유형의 기능반응을 보였다. 600 ppm (0.015 day)과 1000 ppm (0.014 day)에서 추정된 처리시간은 400 ppm에서 추정된 결 과(0.017 day)보다 짧았다. 이산화탄소 농도별 복숭아혹진딧물 기생률은 유사한 특징을 나타내었다. 가장 높은 기생률은 400, 600, 1000 ppm 에서 복숭아혹진딧물 16, 32, 32마리에 대해 0.57, 0.61, 0.70이었다. 이산화탄소 농도 증가는 콜레마니진디벌의 기능반응에서 공격율에는 영향 을 주지 않았지만 처리시간에는 영향을 주었다.

In this study, we investigated the functional response of aphid parasitoid, Aphidius colemani Viereck (Hymenoptera: Braconidae), on the green peach aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae). Three carbon dioxide concentrations (400, 600, and 1000ppm) and seven host densities (2, 4, 8, 16, 32, 64, and 128) were used during a 24-h period. A type III functional response for A. colemani was fit separately for each CO2 concentration. The estimated handling time (Th) under elevated CO2 (600 ppm and 1000 ppm, 0.015 and 0.014 day) was shorter than that under ambient CO2 (400 ppm, 0.017 day). The proportion of aphids that were parasitized showed the similar characteristic curve under three CO2 concentrations. The highest parasitized rates for A. colemani were 0.57, 0.61, and 0.70 at 16, 32, and 32 aphid density under 400, 600, and 1000ppm, respectively. Although handling time of A. colemani was influenced by elevated CO2 concentrations, the attach rate was not changed much.

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• 안정준(국립원예특작과학원 온난화대응농업연구소) | Jeong Joon Ahn (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science, Jeju 63240, Korea) Corresponding author
• 김정은(국립원예특작과학원 온난화대응농업연구소) | Jung-Eun Kim (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science, Jeju 63240, Korea)
• 김천환(국립원예특작과학원 온난화대응농업연구소) | Chun Hwan Kim (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science, Jeju 63240, Korea)