Pathogenicity of Korean Entomopathogenic Nematodes to Exomala orientalis(Coleoptera : Scarabaeidae)

등얼룩풍뎅이(Exomala orientalis)에 대한 한국산 곤충병원성 선충의 병원성

  • Lee Dong-Woon (Department of Applied Biology, Sangju National University) ;
  • Kim Hyeons-Hwan (Horticultural Environment Division of National Horticultural Research Institute) ;
  • Lee Sang-Myeong (Southern Forest Research Center, National Forest Science Institute) ;
  • Choo Ho-Yul (Deportment of Applied Biology and Environmental Sciences, Institute of Agriculture & Life Ulsan Science, Gyeongsang National University) ;
  • Choi Woo-Goun (Ulsan Country Club) ;
  • Kweon Tae-Woong (Dongrae Benest Golf Club)
  • 이동운 (상주대학교 생물응용학과) ;
  • 김형환 (원예연구소 원예환경과) ;
  • 이상명 (국립산림연구원 남부산림연구소) ;
  • 추호렬 (경상대학교 응용생물환경학과 농업과학연구원) ;
  • 최우근 (울산칸트리클럽) ;
  • 권태웅 (부산 동래베네스트골프장)
  • Published : 2005.03.01

Abstract

The 21 strains of Korean entomopathogenic nematodes, {Heterorhabditis bacteriophora Hamyang strain(HbH), Heterorhabditis sp. 202, 205, 217, Heterorhabdiris sp. KCTC 0991BP strain, Steinernema carpocapsae Pocheon(ScP), S. longicaudum Gonaju, S. longicaudum Nonsan, Steinernema sp. 7,24, 52, 55, 60, 64, 206, 207, 209, 210, 219, and 227 strain} were evaluated for the control of a turfgrass insect pest, Exomala orientalis. Heterorhabditis spp. showed higher pathogenicity than Steinernema spp. against 3rd instar larvae of E. orientalis with $55\%$ mortality by Heterorhabditis sp. 202 strain and $50\%$ by HbH and Heterorhabditis sp.205 strain at the rate of 200 infective juveniles per larva 14 days later after treatment. The number of infective juveniles of Korean entomopathogenic nematodes in 3rd instar larvae of E. orientalis was higher in Heterorhabditis spp. than in Steinernema spp.. In general, numbers of produced infective juveniles of three species were much higher, i.e., Heterorhabditis sp.202 strain produced 273,064 infective juveniles, S. carpocapsae Pocheon strain 273,043, and Heterorhabditis sp. 217 strain 248,887, respectively.

골프장의 문제해충들 중 등얼룩풍뎅이(Exonala orientalis) 3령충의 방제를 위하여 21계통의 한국산 곤충병원성 선충{Heterorhabditis bacteriophora 함양 계통과 Heterorhabditis sp. 202, 206, 217, Heterorhabditis sp. KCTC 0991BP 계 통, Steinernema carpocapsae 포천, S. longicaudum 공주, S. longicaudum 논산, Steinernema sp. 7, 24, 62, 55, 60, 64, 206, 207, 209, 210, 219, 227 계통}을 이용하여 실험을 수행하였다. 등얼룩풍뎅이 유충 한 마리당 200마리의 선충을 처리하였을 때, 14일 후 치사율은 Heterorhabditis sp. 202 계통이 $55\%$, Heterorhahditis sp. 205 계통과 H. bacteriophora 함양 계통이 각각 $50\%$의 치사율을 나타내어 Heterorhabditis속 선충들의 병원성이 $32.5\%$이하의 치사율을 나타낸 Steinernema속 선충에 비하여 높았다. 등얼룩풍뎅이 3령충 내에서 증식된 선충수는 Heterorhabditis sp. 202 계통이 273,064마리, S. carpocapasae 포천 계통이 273,043마리, Heterorhabditis sp. 217 계통이 248,887마리로 이들 선충들의 증식수가 일반적으로 많았다.

Keywords

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