Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effects of Temperature on Survival, Development, and Reproduction of the Non-diapause Asian Corn Borer, Ostrinia furnacalis (Lepidoptera: Crambidae)

조명나방(나비목: 포충나방과) 비휴면태의 생존과 발육, 생식에 미치는 온도의 영향

  • Jung, Jin Kyo (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Seo, Bo Yoon (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Eun Young (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration)
  • 정진교 (국립식량과학원 재배환경과) ;
  • 서보윤 (국립농업과학원 작물보호과) ;
  • 김은영 (국립식량과학원 재배환경과)
  • Received : 2021.10.25
  • Accepted : 2021.11.22
  • Published : 2021.12.01
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Abstract

We analyzed the effects of temperature on the survival, development, and reproduction of the non-diapause Asian corn borer, Ostrinia furnacalis (Lepidoptera: Crambidae). A 16:8 h light:dark photoperiod was supplied to the non-diapause stages of O. furnacalis. The insects were raised on an artificial diet at seven constant temperatures between 15 and 35℃ for immature stages, and eight temperatures between 13 and 33℃ for the adult stage. The survival rate of eggs exceeded 70% at all temperatures, whereas survival of larvae was as low as 7.4% at 15℃. The developmental periods of the immature stages decreased with increasing temperature, but the larval period did not decrease further at 35℃. The pupal weight increased with increasing temperature, but the female weight decreased at 35℃. Variations with different last larval instars within the colonies at different temperatures were observed. Adults produced offspring at all tested temperatures. Adult longevity and the pre-oviposition and oviposition periods decreased with increasing temperature, but the pre-oviposition period increased at 33℃. Total fecundity exceeded 400 viable eggs at 22℃ and 31℃. The mean daily fecundity during the oviposition period and the mean daily fecundity on the day of oviposition increased with increasing temperature, but decreased at 33℃. Daily fecundity sharply increased at earlier adult ages and slowly decreased thereafter. The simulated oviposition frequency was greatest at 22℃. The lower developmental threshold temperatures were estimated to be the lowest at 9.7℃ for the first instar larva and the highest at 14.7℃ for the 5th to last instar larval stage, using a linear model.

옥수수 주 해충인 조명나방(Ostrinia furnacalis)(나비목: 포충나방과)의 비휴면태 단계의 생존과 발육, 생식에 미치는 온도 영향을 분석하였다. 비휴면태 단계는 16:8 h (명:암)의 광주기 조건에서 유지하였다. 미성숙태를 15~35℃ 범위의 7개 항온조건에서, 성충을 13~33℃ 범위의 8개 항온조건에서 인공사료로 사육하였다. 알은 적용된 모든 온도에서 생존율이 70% 이상이었으나, 유충은 15℃에서 7.4%의 낮은 생존율을 보였다. 온도가 증가함에 따라 미성숙태의 발육기간은 짧아졌으나, 유충기간은 35℃에서 더 짧아지지 않았다. 번데기 몸무게는 온도 증가에 따라 증가하였는데, 암컷의 무게는 35℃에서 다시 감소하였다. 25℃를 제외한 다른 6개 온도 각각에서 마지막 영기가 다른 개체변이가 관찰되었다. 성충은 적용된 모든 온도에서 자손을 생산하였다. 성충 수명과 산란전 기간, 산란기간은 온도가 증가함에 따라 감소하는 경향이었고, 산란전 기간은 33℃에서 다시 길어졌다. 총산란수는 22℃와 31℃에서 400개 이상이었다. 산란기간 중 일산란수와 산란일당 일산란수는 온도가 증가함에 따라 많아졌는데, 33℃에서 다시 감소하였다. 성충 나이에 따른 일일 산란수는 우화 초기 급격히 증가하였고 이후 완만히 감소하는 경향이었다. 산란횟수는 22℃에서 가장 많았다고 모의 추정되었다. 선형방정식으로 추정된 최저발육온도는 1령 유충이 9.7℃로 가장 낮았고, 5령~말령 단계가 14.7℃로 가장 높았다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 어젠다 연구과제(PJ01527801)를 수행하는 과정에서 얻은 결과를 바탕으로 작성되었다

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