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Post-harvest Treatment on the Peach Pyralid Moth and the Small Tea Tortrix Moth Infesting Apples Using Controlled Atmosphere and Temperature Treatment System

복숭아명나방과 사과애모무늬잎말이나방에 대한 환경조절열처리를 이용한 사과 수확 후 처리기술

  • Hong, Youkyeong (Department of Bioresource Sciences, Andong National University) ;
  • Kwon, Kimyeon (Institute of Biological Utility) ;
  • Kim, Yonggyun (Department of Bioresource Sciences, Andong National University)
  • Received : 2014.11.19
  • Accepted : 2015.01.26
  • Published : 2015.03.01

Abstract

A complete control on quarantine insect pests is required for exporting domestic apples to other countries. To this end, a controlled atmosphere and heat treatment system (CATTS) has been developed as a post-harvest treatment. This study determined the CATTS conditions to control completely two lepidopteran insect pests, the smaller tea tortrix moth, Adoxophyes paraorana and the peach pyralid moth, Dichocrocis punctiferalis, which exhibit different feeding behviors. In both species, the fifth instar larvae were the most tolerant developmental stage to the heat treatment. Under CATTS conditions with 15% $CO_2$ and 1% $O_2$ for 1 h heat treatment at $46^{\circ}C$, the fifth instar larvae of A. paraorana exhibited a complete lethality, while those of D. punctiferalis underwent 88% mortality. To control completely the fifth instar larvae of D. punctiferalis, 2 h heat treatment required under the same atmosphere condition. These CATTS treatment effects were confirmed against over 3,000 fifth instar larvae of each species infesting apples. This study demonstrates that the longer exposure to CATTS conditions is required for the complete disinfestation of the internal apple feeder compared to the non-internal apple feeder.

국내 사과를 외국으로 수출하기 위해서는 수입국의 검역 대상 해충을 완전히 제거하는 것이 필수적이다. 이를 위한 수확 후 해충 사멸 기술로서 환경조절열처리(controlled atmosphere and temperature treatment system: CATTS) 기술이 개발되고 있다. 본 연구는 상이한 가해 습성으로 사과 과실에 피해를 주는 두 해충에 대해 CATTS의 사멸조건을 결정하였다. 사과애모무늬잎말이나방(Adoxophyes paraorana)은 사과 과실 표면을 가해하는 해충인 반면 복숭아명나방(Dichocrocis punctiferalis)은 과실의 내부를 가해한다. 여러 가해 발육태 가운데 두 곤충 모두 5령 유충이 열에 대한 내성이 가장 높았다. 고농도(15%)의 이산화탄소, 저농도(1%) 산소 및 $46^{\circ}C$ 온도 조건에서 1 시간 동안 처리하는 CATTS 처리조건은 사과애모무늬잎말이나방 5령 유충을 100% 사멸시켰다. 그러나 동일한 CATTS 조건에서 복숭아명나방 5령 유충은 88%의 사멸 효과를 보였으며, 100% 사멸 효과를 나타내기 위해서는 2 시간의 열처리를 요구했다. 이를 바탕으로 사과를 가해하고 있는 두 종의 5령 유충 3,000 마리 이상에 대해서 각각 CATTS 처리 효과를 확증하였다. 본 연구는 완전 사멸을 위해서는 심식충이 비심식충에 비해 장기간 CATTS 처리가 요구 된다는 것을 보여 주었다.

Keywords

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