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Development of Matsumuraeses phaseoli (Lepidoptera: Tortricidae) Reared on an Artificial Diet under Outdoor Conditions and Its Over-wintering Stage

야외조건에서 인공사육에 의한 팥나방 발육과 월동태

  • Jung, Jin Kyo (National Institute of Crop Science) ;
  • Seo, Bo Yoon (Crop Protection Division, National Academy of Agricultural Science, Rural Developmental Administration) ;
  • Cho, Jum Rae (R&D Coordination Division, Research Policy Bureau, Rural Developmental Administration)
  • 정진교 (국립식량과학원 작물환경과) ;
  • 서보윤 (국립농업과학원 농산물안전성부 작물보호과) ;
  • 조점래 (농촌진흥청 연구정책국 연구운영과)
  • Received : 2014.02.25
  • Accepted : 2014.05.15
  • Published : 2014.09.01

Abstract

Matsumuraeses phaseoli is one of the main pests that attack the flowers and pods of red bean (Vigna angularis) and mungbean (Vigna radiata) in Korea. To elucidate the developmental characteristics and over-wintering stage of M. phaseoli, several stages of the insect were observed through artificial rearing under outdoor conditions in Suwon ($37^{\circ}$16'N $126^{\circ}$59'E 35ASL), Korea. In colonies in which neonate larvae were reared at about 2-week intervals for more than a year, the developmental period from larva to adult emergence became longer from spring to summer, but shorter from summer to autumn; aestivation was not observed during the summer season. The colony in which rearing started on Oct 8, 2008 over-wintered as pupae and emerged in late April next year with a survival rate of 6%. However, the colony in which the rearing started on Oct 23, 2008 over-wintered as mature larvae, pupated in late April, and emerged in early and mid-May with a survival rate of 2%. When the fifth instar larvae were transferred outside from the laboratory ($25^{\circ}C$, 15L:9D) between November and February, no larvae could survive during the winter season. Some newly laid eggs and newly emerged adults could not hatch and could not survive, respectively, in outdoor conditions in November and December. These results suggest that neonate larvae of M. phaseoli that hatch in October can over-winter as late larvae or pupae in Suwon, Korea.

팥나방 (Matsumuraeses phaseoli) (나비목: 잎말이나방과)은 한국에서 팥 (Vigna angularis)과 녹두 (Vigna radiata)의 꽃과 꼬투리를 가해하는 주요 해충의 하나인데, 수원지방에서 이 곤충의 발육 특성과 월동태를 추정할 목적으로 야외 ($37^{\circ}$16'N $126^{\circ}$59'E 35ASL) 조건에서 인공사육을 통해 발육과정이 관찰되었다. 갓 부화한 유충 집단들은 약 14일 간격으로 인공사료를 이용하여 1년 이상 야외에서 사육되었는데, 봄에서 고온인 여름철로 감에 따라 발육기간이 짧아지고, 가을철로 감에 따라 다시 길어지는 경향이었다. 유충 혹은 번데기 발육에서 여름철 하면 현상은 발견되지 않았다. 2008년 10월 8일 사육이 시작된 집단은 번데기 상태로 월동하였는데, 6%의 생존율을 보이며 이듬해 4월말 우화하였다. 10월 23일에 사육이 시작된 집단은 노숙유충태로 월동하였는데, 이듬해 4월말 용화하여, 5월 초중순에 2%의 최종 생존율을 보이며 우화하였다. 한편 실내에서 사육되어 5령까지 발육된 유충들을 11월과 2월 사이에 야외로 옮겨 사육하였을 때, 생존하는 개체들은 발견하지 못하였다. 항온조건 ($25^{\circ}C$, 15L:9D)에서 갓 산란된 알을 11월과 12월 중에 야외로 옮겨 유지하였을 때, 월동하여 부화하는 알은 발견되지 않았다. 또 항온조건에서 갓 우화한 성충들을 11월과 12월 중 야외로 옮겨 사육하였을 때, 모두 사망하였다. 이 결과로 팥나방은 한국의 수원지방에서 10월 중 부화한 유충들이 유충과 번데기로 월동할 수 있는 것으로 추정되었다.

Keywords

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