Insecticidal Activities and Synergism of Bistrifluron Against EPN-Resistant Strain of Diamondback Moth, Plutella xylostella (Lepidoptera: Plutellidae)

EPN 저항성 배추좀나방에 대한 IGR계 약제 Bistrifluron의 살충활성과 세 가지 협력제에 의한 살충활성 증진 효과

  • Joo, You-Lee (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Yang, Jeong-Oh (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Yoon, Chang-Mann (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Kim, Gil-Hah (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University)
  • 주유리 (충북대학교 농업생명환경대학 식물의학과) ;
  • 양정오 (충북대학교 농업생명환경대학 식물의학과) ;
  • 윤창만 (충북대학교 농업생명환경대학 식물의학과) ;
  • 김길하 (충북대학교 농업생명환경대학 식물의학과)
  • Published : 2009.03.31


EPN-resistant diamondback moth were tested the developmental characteristics, longevity, fecundity and synergistic effect with synergists when treated with the bistrifluron, an inhibitor of chitin synthesis. Inhibition rate of egg hatch was below at the recommended concentration (50 ppm) to the EPN-resistant strain than EPN-non selected strain, however, mortality within 24hr after hatching was showed as 50-60%. They did not show the difference between two strains. Mortality of larval instars were showed effective to two strains with no difference. Inhibition rate of emergence did not show any effect when treated with pupae. Moreover, they did not affect to the longevity and fecundity. When bistrifluron was treated at 50 ppm to the adult, however, longevity and fecundity was decreased with no difference between two strains. Bistrifluron to the EPN-resistant strain showed synergistic effect as high as 137.7 and 73.1 folds with synergist such as PBO (microsomal oxidase inhibitor) and polyoxin B (chitin synthetase inhibitor), respectively.


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