Neotropical Entomology (2003) 32, 413-419

Francisco J. Cividanes and Vanderlei P. Souza (2003)
Exigências Térmicas e Tabelas de Vida de Fertilidade de Myzus persicae (Sulzer) (Hemiptera: Aphididae) em Laboratório
[Thermal requirements and age-specific life tables of Myzus persicae (Sulzer) (Hemiptera: Aphididae) in the laboratory]
Neotropical Entomology 32 (3), 413-419
Abstract: This study aimed to determine the thermal requirements of the green peach aphid, Myzus persicae(Sulzer), to calculate age-specific life tables, and to predict the occurrence of adults in the field by a degree-day model. The aphids were reared, individualized, in leaf cages set on kale, Brassica oleracea L. var. acephala DC., kept at 15, 20, 23, 25 and 30°C, in the laboratory. The lowest developmental thermal threshold (Tb) was 2.2°C and the thermal constant (K) was 165.6 day-degree. The degree-day model predicted the occurrence of adults 0-1 day before the time they were first observed in the field. The age-specific life table parameters, on a degree-day time scale, indicated that the temperatures 23°C and 25°C provided the best thermal conditions for the population growth of M. persicae. At these temperatures the highest intrinsic rate of natural increase (r_m= 0.012) was observed as well as the lowest-mean generation time (T = 303.8 degree-day and T = 272 degree-day, respectively) and population doubling time (TD = 57.8 degree-day).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Myzus persicae	Cabbage (Brassica oleracea)