The Detection and Multiplicity of Entomopathogenic Nematodes Using Silkworms (Bombyx mori)

누에를 이용한 곤충병원성 선충의 검색 및 배양

  • 한상미 (농업과학기술원 잠사곤충부) ;
  • 이광길 (농업과학기술원 잠사곤충부) ;
  • 여주홍 (농업과학기술원 잠사곤충부) ;
  • 권해용 (농업과학기술원 잠사곤충부) ;
  • 우순옥 (농업과학기술원 잠사곤충부) ;
  • 이용우 (농업과학기술원 잠사곤충부) ;
  • 백하주 (경상북도보건환경연구원) ;
  • 한명세 (경북대학교 농업생명과학대학)
  • Published : 2003.12.01

Abstract

Entomopathogenic nematodes were isolated through the investigation in soils collected from cultivated and non-cultivated fields using silkworms (Bombyx mori) and Galleria mellonella trap. The detectable rate of entomopathogenic nematodes of silkworms trap was higher than the G. mellonella trap. This study indicates the detection of entomopathogenic nematodes from soils that silkworms are sensitive superior to the G. mellonella to entomopathogenic nematodes. The steinernema, rhabditidae, and diplogatroidae strains successfully cultured on the silkworms host as well as on artificial media. Reproductivity in the living silkworm larva and pupa was 1.5 to 3.5${\times}$ 10$\^$5/ nematodes per host However, G. mellonella could be multiplied less than 5${\times}$l0$\^$5/ nematodes. The dried pupa of the silkworm following mositurize was cultured 0.5 to 2${\times}$10$\^$5/) nematodes per host. The culture methods of the steinernema, rhabditidae, and diplogatroidae strains, using silkworm powder, extracted chicken intestine, and food waste fertilizer could be applicative, but rate of reproduction was low.

본 연구는 해충에 대한 생물적 방제제로서 유용한 곤충병원성 선충의 효율적 검색과 in vitro에서의 대량 증식 가능성을 조사하였으며 다음과 같은 결과를 얻었다. 1. 토양으로부터 곤충병원성 선충의 검색을 위한 trap용 곤충으로는 꿀벌부채명나방보다 누에가 감수성이 높았다. 2. Sterinernema, Rhabditidae, Diplogastroidae과 계통의 선충은 꿀벌부채명나방 유충에서의 증식은 5만 마리 이하였으나, 누에 유충에서는 15만에서 35만 마리의 선충 증식이 일어났으며, 누에 번데기에서는 25만 마리 이상의 선충이 증식되었다. 누에 증식에 있어 누에 번데기를 사용했을 때가 가장 우수하였다. 3. Sterinernema, Rhabditidae, Diplogastroidae과 계통의 선충에 대한 증식률은 열풍건조 번데기의 흡수처리 후 배양 및 기타 천연물 인공배지에서 증식은 가능하였으나 살아있는 누에 유충보다는 증식률이 낮았다. 4. 이상의 결과로 토양으로부터 곤충병원성 선충을 분리하는데 누에를 이용한 trap이 매우 우수하였으며, 선충의 증식에 있어 누에 유충 및 번데기가 효과적인 것으로 판단된다.

Keywords

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