Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Electroantennogram Responses of Spodoptera frugiperda Males (Lepidoptera: Noctuidae) to Sex Pheromone Compounds

열대거세미나방 성페로몬 성분에 대한 수컷의 촉각 반응

  • Cho, Jum Rae (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Jeong Hwan (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Seo, Bo Yoon (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Seo, Meeja (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Lee, Gwan Seok (Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration)
  • 조점래 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 김정환 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 서보윤 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 서미자 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 이관석 (농촌진흥청 국립농업과학원 작물보호과)
  • Received : 2021.09.30
  • Accepted : 2021.10.22
  • Published : 2021.12.01
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Abstract

This study was conducted to investigate the EAG (electroantennogram) response of Spodoptera frugiperda male to sex pheromone compounds and whether or not S. frugiperda male adults would undergo double mating. The EAG response of S. frugiperda male adult to Z9-14:Ac increased in a dose-dependent as the dose increased. Among the 7 sex pheromone components investigated, male EAG recording was the highest to Z9-14:Ac. The EAG response of S. frugiperda male adult to the mixed sex pheromone component was greater than that to the single component. Male adults of S. frugiperda were capable of double mating under laboratory condition, and the secondary mating rate increased to 72.2% compared to the 58.3% of primary mating rate. The EAG response of mated S. frugiperda male adult was not different from that of unmated S. frugiperda male. In the net house test with sex pheromone lure, mated male adults were not captured during the test period. Also, strangely, unmated male adults were not captured even in a trap equipped with virgin female adults, although the antennae of mated male adult were responded to the sex pheromone component in the laboratory. Probably, it is thought that the mated male adults may not have been caught in the trap be due to flight ability which has been decreased after mating. The field attractiveness of S. frugiperda male adults to sex pheromones remains to be further elucidated.

본 연구는 성페로몬에 대한 열대거세미나방 수컷 성충의 촉각 반응 및 중복 교미 여부를 확인하기 위해 수행하였다. 성페로몬 성분인 Z9-14:Ac에 대한 열대거세미나방 수컷 성충의 촉각 반응은 농도 의존적으로 농도가 증가할수록 크게 나타났다. 조사한 7성분 중 Z9-14:Ac 성분에 대한 촉각 반응이 가장 컸다. 성페로몬의 혼합 성분에 대한 촉각 반응이 단일 성분에 비해 컸다. 열대거세미나방 수컷 성충은 실험실 조건에서 중복교미가 가능하고, 첫 교미율이 58.3%인데 비해서 두 번째 교미율이 72.2%로 증가하였다. 교미한 수컷 성충의 촉각 반응과 교미하지 않은 수컷 성충의 촉각 반응의 차이가 없었다. 성페로몬 트랩에 교미하지 않은 수컷이 시험기간 중에 포획되지 않았다. 대조구인 교미하지 않은 암컷 성충을 장착한 트랩에서도 교미하지 않은 수컷 성충은 포획되지 않았다. 비록 실내에서 교미한 수컷 성충은 성페로몬 성분에 대해 교미하지 않은 수컷 성충처럼 촉각 반응을 보였다고 할지라도 실제 야외 망실 하우스에서 교미를 한번 한 수컷 성충은 비행 능력 등 활력의 문제로 트랩에 포획되지 않았을 가능성이 있다고 생각된다. 야외 노지에서 열대거세미나방 성페로몬에 대한 수컷 성충의 유인 정도는 추후 좀 더 많은 검토가 필요할 것으로 본다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 공동연구사업(과제번호: PJ015009) 예산으로 수행되었습니다.

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