Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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The Antifungal Effect of Rhus verniciflua Stokes against Metarhizium anisopliae on the Edible Insect, Protaetia brevitarsis (Coleoptera)

흰점박이꽃무지에 발생하는 병원성 곰팡이 Metarhizium anisopliae에 대한 옻나무 추출액의 항진균 효과

  • Kim, Nang-Hee (Industrial Insect Division, National Institute of Agricultural Science, Rural Development Admistration) ;
  • Song, Myung-Ha (Industrial Insect Division, National Institute of Agricultural Science, Rural Development Admistration) ;
  • Kim, Eunsun (Industrial Insect Division, National Institute of Agricultural Science, Rural Development Admistration) ;
  • Kim, Yongsoon (Industrial Insect Division, National Institute of Agricultural Science, Rural Development Admistration) ;
  • Park, Kwan-Ho (Industrial Insect Division, National Institute of Agricultural Science, Rural Development Admistration) ;
  • Kim, Sunyoung (Industrial Insect Division, National Institute of Agricultural Science, Rural Development Admistration)
  • 김낭희 (국립농업과학원 곤충산업과) ;
  • 송명하 (국립농업과학원 곤충산업과) ;
  • 김은선 (국립농업과학원 곤충산업과) ;
  • 김용순 (국립농업과학원 곤충산업과) ;
  • 박관호 (국립농업과학원 곤충산업과) ;
  • 김선영 (국립농업과학원 곤충산업과)
  • Received : 2020.09.21
  • Accepted : 2020.12.05
  • Published : 2020.12.31
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Abstract

The white-spotted flower chafer (Protaetia brevitarsis) larva is one of the insects widely-used for edible and medicinal purposes in Eastern Asia. As a result of increasing demand for P. brevitarsis, massrearing systems in domestic farms have become necessary. However, the mass-rearing of larvae under confined rearing conditions could provide conditions unsuitable for preventing entomopathogenic diseases. Metarhizium anisopliae is the strongest fatal entomopathogenic fungus against P. brevitarsis. For inhibition of M. anisopliae, we used a Rhus verniciflua Stokes extract that has antifungal components. We investigated the inhibitory effect of the R. verniciflua extract at 1%, 5%, and 10% concentrations. The results showed that a 1% R. verniciflua extract added to sawdust produced a significantly low P. brevitarsis mortality rate. Moreover, extract-treated groups were heavier and had a shorter larval period than those of the untreated group. Consequently, we suggest that using an R. verniciflua extract can reduce the P. brevitarsis fatality rate from entomopathogenic fungi (e.g. M. anisopliae), resulting in more effective mass-rearing systems for P. brevitarsis.

흰점박이꽃무지(Protaetia brevitarsis) 유충은 동아시아에서 식용 및 약용으로 널리 사용되고 있다. 흰점박이꽃무지 수요 증가로 인해 유충의 대량 사육 방법이 필요하지만 좁은 공간에서 대량으로 유충을 사육할 경우 곤충 병원성 질병 감염에 취약해진다. Metarhizium anisopliae는 흰점박이꽃무지 유충에 치명적인 곤충 병원성 곰팡이 중 하나이다. 이를 저해하기 위해 항진균 성분이 함유된 옻나무(Rhus verniciflua Stokes) 추출액을 첨가하였고, 연구 결과 1% 옻나무 추출액을 첨가한 경우 녹강균에 의한 유충의 치사율이 유의미하게 낮았다. 또한 일반톱밥을 급여한 대조구에 비해 옻나무 추출액 처리구에서 유충의 무게가 더 무거웠고 유충 기간이 짧아지는 것을 확인하였다. 따라서 이 연구를 통해 곤충 병원성 곰팡이에 대한 옻나무 추출액의 항진균 효과를 확인할 수 있었으며 흰점박이꽃무지 유충 사육 시 옻나무 추출액을 첨가하여 급여한다면 병원성 곰팡이에 의한 유충의 치사율을 낮추고 증체량을 높이는 데 효과가 있을 것이다.

Keywords

Acknowledgement

이 연구는 국립농업과학원의 기관고유사업(과제번호: PJ0142152020)의 지원을 받아 수행되었습니다.

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