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Evaluation of Hygienic Ability for the Selection of Disease Resistant Honey Bee (Apis mellifera) Lines

질병저항성 꿀벌 계통 선발을 위한 청소능력 특성 평가

  • Kim, Hye-Kyung (Department of Industrial Entomology, Korea National College of Agriculture and Fisheries) ;
  • Park, Chang Gyu (Department of Industrial Entomology, Korea National College of Agriculture and Fisheries) ;
  • Han, Gug-In (Industrial Entomology Research Institute)
  • 김혜경 (한국농수산대학 산업곤충학과) ;
  • 박창규 (한국농수산대학 산업곤충학과) ;
  • 한국인 (충청남도농업기술원 산업곤충연구소)
  • Received : 2021.06.25
  • Accepted : 2021.07.17
  • Published : 2021.07.31

Abstract

Hygienic behavior of Honey bees, Apis mellifera, was evaluated by uncapping and removing ability of dead broods from the nest. Hygienic behavior is originated from quantitative traits, which are expected to express key roles in colony defense against mite parasites and bacterial and fungal diseases. It is regarded as one of important characteristics of honey bee's resistance to parasites and pathogens. In this study, five inbreed and two hybrid lines of A. mellifera, the former five inbreed lines, which have been reared for over eight years at the National Academy of Agricultural Science in Korea, and the latter two hybrid lines, which have been bred by crossing between the inbreed lines, were investigated on their hygienic behavior by a pin-killed brood assay at 12hrs and 24hrs after treatment. The results indicated that after 12hrs one inbred line was proved to be hygienic (removal rate of dead brood >90%), three inbred and two hybrid lines showed intermediate behavior, and one inbred line belonged to non-hygienic (removal rate of dead brood <70%). However, after 24hrs, only one line was considered to be intermediate as removal rate was below 90%, thus all except this line had shown hygienic behavior.

화분매개곤충으로 중요한 산업적 가치를 지닌 꿀벌은 전 세계적으로 병해충에 의한 개체수 감소 현상이 심각한 문제로 제기 되고 있다. 본 논문에서는 이를 타개하기 위하여 질병저항성 꿀벌 계통을 선발하고자 하였으며, 이를 위해 꿀벌 육성 계통별 청소력(hygienic behavior) 평가를 수행하였다. 이는 질병 저항성 계통 선발에 관한 연구로본 연구에서는 5종의 꿀벌 계통과 2종의 교배종 계통에 대한 청소력 평가를 Pin killed brood assay 법에 의해 수행하였다. 그 결과 처리 24 시간 후 죽은 번데기를 제거하거나 개봉하는 능력이 60% 이상으로 청소능력이 낮은 계통(non-hygienic)은 확인되지 않았으며, 반대로 죽은 번데기를 제거하거나 개봉하는 능력이 90%이상인 hygienic 계통은 C, D, E, F, ♀CX♂D 그리고 ♀FX♂D 계통인 것으로 드러났으며, 그 외A 계통은 보통(intermediate)의 청소능력을 가진 것으로 확인 되었다. 이를 통해 본 연구에서는 육성 계통 대부분이 높은 질병저항성 특성을 지니는 것으로 평가되고 있으며, 이러한 결과는 지속적인 질병저항성 꿀벌 계통 선발에 활용할 수 있을 것으로 기대되고 있다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 공동연구사업사업 PJ01576304과 PJ01504206 과제의 지원에 의해 수행된 결과입니다.

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