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Comparative Analysis of the Biological Characteristics of Ephedrus plagiator (Nees) and Aphidius ervi Haliday according to Different Aphid Hosts

기주에 따른 목화검정진디벌(Ephedrus plagiator (Nees))과 진디벌(Aphidius ervi Haliday)의 생물학적 특성 비교

  • Ji, Chang Woo (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration (RDA)) ;
  • Kang, Eun Jin (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration (RDA)) ;
  • Byeon, Young-Woong (Director General for Planning and Coordination, RDA) ;
  • Kim, Jeong-Hwan (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration (RDA)) ;
  • Choi, Byeong Ryeol (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration (RDA))
  • 지창우 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 강은진 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 변영웅 (농촌진흥청 기획조정관실) ;
  • 김정환 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 최병렬 (농촌진흥청 국립농업과학원 작물보호과)
  • Received : 2014.10.13
  • Accepted : 2014.11.07
  • Published : 2014.12.01

Abstract

To investigate the biological control of Aulacorthum solani, a comparative analysis was carried out using an indigenous natural enemy, Ephedrus plagiator, and an exotic parasitoid, Aphidius ervi. Lifespan, spawning periods, number of mummies, number of offspring, and developmental periods of the two parasitoids on Aulacorthum solani and Acyrthosiphon pisum were studied at 15, 20, 25, and $30^{\circ}C$ with a photoperiod 16 h (L): 8 h (D). The lifespan of E. plagiator (5.3 days) was relatively higher than that of A. ervi (2.3 days) when these parasitoids were reared on A. solani at $15^{\circ}C$. Similarly, the spawning period of E. plagiator (5.3 days) was longer than that of A. ervi (2.2 days). When the two aphid parasitoids were provisioned with A. solani, the numbers of E. plagiator mummies at 15, 20, 25, and $30^{\circ}C$ were 71.5, 41, 15.7, and 7.7, respectively, whereas at the same temperatures, the numbers of A. ervi mummies were 22.1 16.3, 6.2, and 0.4, respectively. In contrast, when provision with A. pisum, the numbers of E. plagiator mummies at 15, 20, 25, and $30^{\circ}C$ were 70.3, 69.8, 34.3, and 8.4, whereas the numbers of A. ervi mummies were 93.4, 71.2, 34.8, and 14.5, respectively. The numbers of E. plagiator offspring emerging at 15, 20, 25, and $30^{\circ}C$ were 42.1, 36, 11.6, and 0, whereas the numbers of A. ervi offspring emerging were relatively lower at 19.6, 13.5, 3.7, and 0.1, respectively. By comparing these results, it can be concluded that E. plagiator is a more efficient parasitoid of A. solani, whereas A. ervi is more efficient on A. pisum.

Acknowledgement

Supported by : 국립농업과학원

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