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Hatchability and Temperature-dependent development of Overwintered Eggs of Ricania sp. (Hemiptera: Ricaniidae)

갈색날개매미충 월동 알의 부화율과 온도발육기간

  • Kang, Taek-Jun (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Kim, Se-Jin (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Kim, Dong Hwan (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Yang, Chang Yul (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Ahn, Seung-Joon (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Lee, Seong Chan (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Kim, Hyeong-Hwan (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, RDA)
  • 강택준 (농촌진흥청 국립원예특작과학원 원예특작환경과) ;
  • 김세진 (농촌진흥청 국립원예특작과학원 원예특작환경과) ;
  • 김동환 (농촌진흥청 국립원예특작과학원 원예특작환경과) ;
  • 양창열 (농촌진흥청 국립원예특작과학원 원예특작환경과) ;
  • 안승준 (농촌진흥청 국립원예특작과학원 원예특작환경과) ;
  • 이성찬 (농촌진흥청 국립원예특작과학원 원예특작환경과) ;
  • 김형환 (농촌진흥청 국립원예특작과학원 원예특작환경과)
  • Received : 2013.10.30
  • Accepted : 2013.11.21
  • Published : 2013.12.01

Abstract

Ricania sp. lay eggs into the new twigs of blueberry and suck nutrients causing growth retardation and a sooty mold symptom. This study was conducted to investigate the emergence success and developmental period of overwintered eggs of Ricania sp. under the seven constant temperatures from 10 to $34^{\circ}C$ by $4^{\circ}C$ intervals (14L:10D). We also monitored the emergence time of the Ricania sp. nymph at blueberry by 3 ~ 4 day interval using a modified leaf clip cage. Development times from the overwintered egg to $1^{st}$ nymph were 107.1, 54.5, 33.9, 25.3, 25.1 and 16.7 days and the emergence successes were 23.1, 30.8, 13.8, 21.7, 11.9, and 0.6% at 14, 18, 22, 26, 30 and $34^{\circ}C$, respectively except at $10^{\circ}C$. The developmental periods were decreased with increasing temperatures. First emergence date of the nymphs in the field was between 19 and 22 May, and the average emergence success was 19.6%. The present study might be helpful to establish the management strategy of Ricania sp. based on the biological characteristic.

갈색날개매미충(Ricania sp.)은 블루베리에서 흡즙에 의한 양분손실과 감로로 인한 그을음을 유발하고, 암컷 성충은 1년생 가지의 목질부속에 산란하여 가지를 고사시키는 해충이다. 본 연구는 갈색날개매미충 월동 알들의 실내 온도발육 실험과 노지에서 약충의 부화 시기 조사를 위하여 실시하였다. 충남 예산의 노지재배 블루베리에서 갈색날개매미충 난괴를 채집하여 10, 14, 18, 22, 26, 30, $34^{\circ}C$ (14L:10D) 조건하에서 매일 부화하는 약충수를 조사하였다. 전혀 부화하지 않은 $10^{\circ}C$ 처리구를 제외한 월동 난괴의 온도별 부화소요기간은 평균 107.1, 54.5, 33.9, 25.3, 25.1, 16.7일로 온도가 높을수록 짧아졌고 부화율은 23.1, 30.8, 13.8, 21.7, 11.9, 0.6%로 조사되었다. 노지에서 정확한 부화시기 조사를 위하여 약충으로 부화하자마자 끈끈이트랩에 포획되도록 클립케이지를 설치하여 3~4일 간격으로 포획된 약충수를 조사하였다. 약충은 5월 19일과 22일 사이에 처음 발견되었으며 평균 19.6%의 부화율을 보였다. 조사한 40개의 피해 가지 중 15개의 가지에서는 약충이 전혀 부화하지 않았다.

Keywords

References

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