Abstract
Thermal requirements per developmental stage, offspring production, and percent survival of three isolates of the green peach aphid,Myzus persicae (Sulz.), were determined over a range of constant temperatures from 12.4°–29.4°C. Isolates were collected from Pennsylvania, Maine, and Washington State potato producing regions. Offspring produced, survival, and thermal requirements were not different for all three isolates. Offspring production increased from 12.4°–15.6°C and then decreased as temperature increased. Percent survival averaged 78.2% except at 29.4°C where only 26.7% survived to reproduce. Thermal requirements, with 4°C as the lower developmental threshold, were 25.2, 27.1, 30.9, 30.7, 20.4, 74.2, 201.6 and 135.7 degree days, respectively, for instars 1–4, prereproductive adults, reproductive adults, longevity, and generation time. Data were used as the basis for a computer forecast system to predict aphid population development in potato fields.
Resumen
Los requerimientos termales por estadio de desarrollo, la producción de descendientes y el porcentaje de supervivencia de tres aislamientos del áfidoMyzus persicae (Sulz.), fueron determinados para un rango de temperaturas constantes desde 12.4° hasta 29.4°C.Los aislamientos fueron colectados en las regiones productoras de papa de los estados de Pennsylvania, Maine y Washington. Los descendientes producidos, la supervivencia y los requerimientos termales fueron iguales para los tres aislamientos. La producción de descendientes aumentó de 12.4° a 15.6°C y luego disminuyó conforme se aumentó la temperatura. El porcentaje de supervivencia promedió 78.2% excepto a 29.4°C donde solamente sobrevivieron 26.7%. Los requerimientos termales con 4°C como la temperatura más baja para desarrollo fueron 25.2, 27.1, 30.9, 30.7, 20.4, 74.2, 201.6 and 135.7 grados por día para estadios de 1–4, adultos prereproductivos, adultos reproductivos, longevidad y tiempo de generación, respectivamente. Los datos fueron usados como la base para un sistema computarizado de predicción para predecir el desarrollo de la población de áfidos en cultivos de papa.
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Additional information
Pesticide Research Laboratory and Graduate Study Center and Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania 16802.
Authorized for publication on July 14, 1978 as paper no. 5561 in the Journal Series of the Pennsylvania Agricultural Experiment Station.
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Whalon, M.E., Smilowitz, Z. The interaction of temperature and biotype on development of the green peach aphid,Myzus persicae (Sulz.). American Potato Journal 56, 591–596 (1979). https://doi.org/10.1007/BF02853990
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DOI: https://doi.org/10.1007/BF02853990