Modeling Temperature-Dependent Development and Hatch of Overwintered Eggs of Pseudococcus comstodki (Homoptera:Pseudococcidae)

가루깍지벌레(Pseudococcus comstocki (Kuwana))월동알의 온도발육 및 부화시기예찰모형

  • Jeon, Heung-Yong (Dept. of Horticultural Environment, National Horticultural Research Institute RDA) ;
  • Kim, Dong-Soon (Dept. of Horticultural Environment, National Horticultural Research Institute RDA) ;
  • Yiem, Myoung-Soon (Dept. of Horticultural Environment, National Horticultural Research Institute RDA) ;
  • Lee, Joon-Ho (Dept. of Agricultural Biology, College of Agriculture and Life Sciences, Seoul National Univ.)
  • 전흥용 (원예연구소 원예환경과) ;
  • 김동순 (원예연구소 원예환경과) ;
  • 임명순 (원예연구소 원예환경과) ;
  • 이준호 (서울대학교 농업생명과학대학 농생물학과)
  • Published : 1996.06.01

Abstract

Temperature-dependent development study for overwintered eggs of Pseudococcus comstocki (Kuwana) wasconducted to develop a forecasting model for egg hatch date. Hatch times of overwintered eggs were comparedat five constant temperatures (10, 15, 20, 25, 27$^{\circ}$C) and different collection dates. A nonlinear, four-parameterdevelopmental model with high temperature inhibition accurately described (R2=0.9948) mean developmentalrates of all temperatures. Variation in developmental times was modeled(~~=0.972w9)it h a cumulative Weibullfunction. Least-squares linear regression (rate=O.O06358[Temp.]-0.07566)d escribed development in the linearregion (15-25$^{\circ}$C) of the development curve. The low development threshold temperature was estimated 11.9"Cand 154.14 degree-days were required for complete development. The linear degree-day model (thermal summation)and rate summation model (Wagner et al. 1985) were validated using field phenology data. In degreedaymodels, mean-minus-base method, sine wave method, and rectangle method were used in estimation of dailythermal units. Mean-minus-base method was 18 to 28d late, sine wave method was 11 to 14d late, rectanglemethod was 3 to 5d late, and rate summation model was 2 to 3d late in predicting 50% hatch of overwinteredeggs. hatch of overwintered eggs.