Characteristics of Enterobacteria from Harmonia axyridis and Effects of Staphylococcus spp. on Development of H. axyridis

무당벌레(Harmonia axyridis ) 장내세균의 특성 및 Staphylococcus spp. 장내세균이 무당벌레의 발육에 미치는 영향

  • Moon, Chung-Woun (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Kim, Ki-Kwang (Department of Microbial & Nano Materials, Mokwon University) ;
  • Whang, Kyung-Sook (Department of Microbial & Nano Materials, Mokwon University) ;
  • Seo, Mi-Ja (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Youn, Young-Nam (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Yu, Yong-Man (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
  • 문청원 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 김기광 (목원대학교 미생물나노소재학과) ;
  • 황경숙 (목원대학교 미생물나노소재학과) ;
  • 서미자 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 윤영남 (충남대학교 농업생명과학대학 응용생물학과) ;
  • 유용만 (충남대학교 농업생명과학대학 응용생물학과)
  • Received : 2011.06.08
  • Accepted : 2011.06.24
  • Published : 2011.06.30


Enterobacteria were isolated in the gut of the predacious multicolored Asian ladybird beetle, Harmonia axyridis, and their effects to the development of H. axyridis were examined. Populations of H. axyridis in this experiment were collected from Kimjae at Cheonbuk province (JK population), Geumsan at Chungnam province (CK population) and laboratory population at Laboratory of Insect Physiology in Chungnam National University, Daejeon. Thirty-four enterobacteria isolates were purified and isolated from the digestive tract of H. axyridis, and a total of 4 strains were classified into group by analysis of 16S rRNA gene sequences. About 70% of total isolates were phylogenetic groups of Bacillus genus and Staphylococcus genus, and they were commonly separated from the digestive tract of H. axyridis. After investigating their susceptibility against antibiotics with 18 representative enterobacteria isolates, ofloxacin and penicillin were selected for examination in this study of their ability to inhibit the growth of all of isolates. In order to remove the enterobacteria from the aphids, ofloxacin and penicillin were given to the green peach aphid, Myzus persicae, and the turnip aphid, Lipaphis erysimi. These aphids were provided to H. axyridis as prey. The weight of pupa, developmental periods of each larval instar, the number of eggs and their hatching ratio of H. axyridis with treatment aphids were lower compared with non-treatment aphids. Staphylococcus saprophyticus is a representative enterobacteria and commonly isolated from the digestive tract of H. axyridis. In the absence of S. saprophyticus, the developmental periods of each larval instar increased; however, the weights of pupa, the number of eggs, and their hatching ratio decreased.


Harmonia axyridis;Enterobacteria;Staphylococcus saprophyticus;antibiotic


Grant : 해충방제용 미생물 살충제의 현장 활용 평가 기술 개발


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