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The Effect of Winter Temperature on the Survival of Lantern Fly, Lycorma delicatula (Hemiptera: Fulgoridae) Eggs

동절기 온도가 꽃매미 월동 알의 생존율에 미치는 영향

  • Lee, Young Su (Environmental Agricultural Research Division, Gyeonggi Agricultural Research and Extension Services) ;
  • Jang, Myoung Jun (Environmental Agricultural Research Division, Gyeonggi Agricultural Research and Extension Services) ;
  • Kim, Jin Young (Environmental Agricultural Research Division, Gyeonggi Agricultural Research and Extension Services) ;
  • Kim, Jun Ran (Crop Protection Division, National Academy of Agricultural Science, RDA)
  • Received : 2014.06.16
  • Accepted : 2014.08.05
  • Published : 2014.09.01

Abstract

Lantern fly(Lycorma delicatula) is a major invasive pest that causes withering symptom of agricultural crops by sucking tree sap and sooty mold symptom by producing honeydew. This study was conducted to investigate the occurrence pattern of lantern fly in grape orchards in Gyeonggi area and the effect of winter temperature on L. delicatula egg survival during 2010 to 2013. In Gyeonggi areas, overwintered L. delicatula eggs began to hatch from early May and nymphs peaked in mid May. Adults emerged from late July and laid eggs until early November. The survival of L. delicatula eggs during overwintering was largely affected by winter temperatures. The relationship between the number of days below a threshold temperature (x) in January and the survival rate of overwintering L. delicatula eggs (y) was using linear regression model. The best model selected by the lowest RSS (residual sum of square) between predicted and actual survival was y = -1.0486 x + 94.496 ($R^2=0.7067$) with $-11^{\circ}C$ of threshold temperature. These results should be helpful to conduct L. delicatula management programs, since the results provided relivable prediction for the winter survival of L. delicatula eggs and the phenology of egg hatch in the spring.

꽃매미는 약충과 성충이 무리지어 식물체 흡즙하거나 그 과정에서 감로를 배출하여 그을음병을 유발시킴으로서 포도 등에 피해를 주는 외래해충이다. 본 연구는 경기도내 주요 포도 재배지에서 꽃매미의 발생특성과 월동기 극저온이 꽃매미 월동난괴의 생존율에 미치는 영향을 분석하기 위해 2010년부터 2013년까지 수행하였다. 경기지역에서 꽃매미 월동난괴는 5월 상순부터 부화하기 시작하여 5월 중순에 가장 높은 약충 밀도를 보이고 있으며 7월 하순부터 출현한 성충은 11월 상순까지 산란하는 특성을 보였다. 동절기 온도가 꽃매미 월동난괴 생존율에 큰 영향을 미쳤으며, 1월 중 극저온 출현일수(x)와 생존율(y) 간 관계를 선형회귀모형으로 분석하였다. 그 결과 예측치와 실측치 간 잔차자승합(residual sum of square) 가장 낮은 모형은 $-11^{\circ}C$를 임계 극저온으로 취급한 y = -1.0486 x + 94.496 ($R^2=0.7067$) 이었다. 본 연구 결과는 월동 중 꽃매미 알의 생존율 예측과 봄철 발생시기 정보를 제공함으로써 꽃매미 관리전략 수립에 유용하게 활용될 수 있을 것으로 판단된다.

Keywords

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  2. Lycorma delicatula(Hemiptera: Fulgoridae): A New Invasive Pest in the United States vol.6, pp.1, 2015, https://doi.org/10.1093/jipm/pmv021