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Development rate, fecundity and lifespan of apterae of the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae), under controlled conditions

Published online by Cambridge University Press:  10 July 2009

Y. K. Aalbersberg
Affiliation:
Grain Crops Research Institute, Private Bag X29, Bethlehem 9700, South Africa
F. Du Toit
Affiliation:
Grain Crops Research Institute, Private Bag X29, Bethlehem 9700, South Africa
M. C. Van Der Westhuizen
Affiliation:
Department of Zoology/Entomology, University of the Orange Free State, Box 339, Bloemfontein 9300, South Africacor1corresp
*
P. H. Hewitt
Affiliation:
Department of Zoology/Entomology, University of the Orange Free State, Box 339, Bloemfontein 9300, South Africacor1corresp
*

Abstract

The rate of development, fecundity and lifespan of apterae of Diuraphis noxia (Mordvilko) were determined at five sets of temperature and daylength conditions. The time required to complete pre-imaginal growth at mean daily temperatures of 10, 13, 14, 17·25 and 20°C was 19·70, 12·09, 11·25, 9·88 and 8·17 days, respectively. The threshold for development was estimated to be 0·54°C and the number of day-degrees C required to complete development was 158·73.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1987

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