Bulletin of Insectology (2011) 64, 63-68

Bruno Freitas De Conti, Vanda Helena Paes Bueno, Marcus V. Sampaio and Joop C. van Lenteren (2011)
Development and survival of Aulacorthum solani, Macrosiphum euphorbiae and Uroleucon ambrosiae at six temperatures
Bulletin of Insectology 64 (1), 63-68
Abstract: Temperature is one of the most important factors in determining the survival and developmental rate of aphids. The aim of this study was to evaluate the developmental time and survival of the aphid species Aulacorthum solani (Kaltenbach), Macrosiphum euphorbiae (Thomas) and Uroleucon ambrosiae (Thomas) (Rhynchota Aphididae) at six constant temperatures. Tests were conducted on lettuce plants (Lactuca sativa L.) in climate chambers at 16, 19, 22, 25, 28 and 31 ± 1 °C, 70 ± 10% RH and 12 h photophase. At high temperatures these species showed lower rates of survival than at low temperatures, and at 31 °C no aphids reached adulthood. The highest survival rates and the shortest developmental times were observed between 16 and 22 °C. The lower temperature threshold (Tb) and thermal constant (K) for A. solani and M. euphorbiae were 1.09 and 1.05 °C and 142.9 and 144.9 degrees-day (DD), respectively, while for U. ambrosiae these parameters could not be estimated. The highest survival rate and short developmental time found at 22 °C indicate that this temperature is optimal for development of A. solani and M. euphorbiae, whereas the optimal temperature for U. ambrosiae is 19 °C.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Bruno Freitas De Conti, Joop C. van Lenteren, Vanda Helena Paes Bueno, Marcus Vinicius Sampaio

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Macrosiphum euphorbiae
	Aulacorthum solani
	Uroleucon ambrosiae