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Natural enemies and their impact on Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae) populations

Published online by Cambridge University Press:  10 July 2009

Y. K. Aalbersberg ,
M. C. Van Der Westhuizen  and
P. H. Hewitt
Y. K. Aalbersberg
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
*
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Abstract

The influence of natural enemies on the population growth of Diuraphis noxia (Mordvilko) in wheat fields in eastern South Africa was investigated. Since the natural enemies were not present in the initial stages, the apparent mortality observed must have been due to other causes. During the logarithmic phase of aphid population growth, predators, in particular the coccinellid Hippodamia variegata (Goeze), had a slight inhibitory effect on growth. During the decline phase of the aphid population, the potential population size was reduced by as much as 52% by predation. The most abundant parasitoids, Aphidius colemani Viereck and Diaeretiella rapae (M'Intosh), had a negligible effect. Although natural enemy populations showed functional responses to increases in Diuraphis noxia numbers, they did not prevent the latter from attaining and exceeding economic injury levels.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 78 , Issue 1 , March 1988 , pp. 111 - 120
Copyright
Copyright © Cambridge University Press 1988

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References

Aalbersberg, Y. K. (1987). Ecology of the wheat aphid Diuraphis noxia (Mordvilko) in the eastern Orange Free State.—155 pp. M.Sc. thesis, Univ. Orange Free State, Bloemfontein, South Africa.Google Scholar
Aalbersberg, Y. K., Du Toit, F., Van der Westhuizen, M. C. & Hewitt, P. H. (1987 a). Development rate, fecundity and lifespan of apterae of the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae), under controlled conditions.—Bull. ent. Res. 77, 629–635.CrossRefGoogle Scholar
Aalbersberg, Y. K., Van der Westhuizen, M. C. & Hewitt, P. H. (1987 b). A simple key for the diagnosis of the instars of the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae).—Bull. ent. Res. 77, 637–640.CrossRefGoogle Scholar
Boughey, A. S. (1971). Fundamental ecology.—222 pp. London, Intertext Books.Google Scholar
Brown, H. D. (1969). The predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State.—318 pp. D.Sc. thesis, Univ. Stellenbosch, South Africa.Google Scholar
Carter, N., McLean, I. F. G., Watt, A. D. & Dixon, A. F. G. (1980). Cereal aphids: a case study and review.—pp. 271–348 in Coaker, T. H. (Ed.). Applied biology. Vol. V.—407 pp. London, Academic Press.Google Scholar
Chambers, R. J., Sunderland, K. D., Wyatt, I. J. & Vickerman, G. P. (1983). The effects of predator exclusion and caging on cereal aphids in winter wheat.—J. appl. Ecol. 20, 209–224.CrossRefGoogle Scholar
Coon, B. F. & Rinick, H. B. Jr. (1962). Cereal aphid capture in yellow baffle trays.—J. econ. Ent. 55, 407–408.CrossRefGoogle Scholar
DeBach, P. (1974). Biological control by natural enemies.—323 pp. London, Cambridge Univ. Press.Google Scholar
Edwards, C. A., Sunderland, K. D. & George, K. S. (1979). Studies on polyphagous predators of cereal aphids.—J. appl. Ecol. 16, 811–823.CrossRefGoogle Scholar
Griffiths, E., Wratten, S. D. & Vickerman, G. P. (1985). Foraging by the carabid Agonum dorsale in the field.—Ecol. Entomol. 10, 181–189.CrossRefGoogle Scholar
Hagen, K. S. (1962). Biology and ecology of predaceous Coccinellidae.—A. Rev. Ent. 7, 289–326.CrossRefGoogle Scholar
Hodek, I. (1967). Bionomics and ecology of predacious Coccinellidae.—A. Rev. Ent. 12, 79–104.CrossRefGoogle Scholar
Hodek, I. (1973). Biology of Coccinellidae.—260 pp. The Hague, Junk.CrossRefGoogle Scholar
Hofsvang, T. & Hågvar, E. B. (1975). Duration of development and longevity in Aphidius ervi and Aphidius platensis (Hym.: Aphidiidae), two parasites of Myzus persicae (Hom.: Aphididae).—Entomophaga 20, 11–22.Google Scholar
Huffaker, C. B., Simmonds, F. J. & Laing, J. E. (1976). The theoretical and empirical basis of biological control.—pp. 41–78 in Huffaker, C. B. & Messenger, P. S. (Eds). Theory and practice of biological control.—788 pp. London, Academic Press.Google Scholar
Hughes, R. D. (1972). Population dynamics.—pp. 275–293 in van Emden, H. F. (Ed.). Aphid technology.—344 pp. London, Academic Press.Google Scholar
Kriel, C. F., Hewitt, P. H., van der Westhuizen, M. C. & Walters, M. C. (1986). The Russian wheat aphid Diuraphis noxia (Mordvilko): population dynamics and effect on grain yield in the western Orange Free State.—J. ent. Soc. sth. Afr. 49, 317–335.Google Scholar
Kring, T. J., Gilstrap, F. E. & Michels, G. J. Jr. (1985). Role of indigenous coccinellids in regulating greenbugs (Homoptera: Aphididae) on Texas grain sorghum.—J. econ. Ent. 78, 269–273.CrossRefGoogle Scholar
Raworth, D. A. (1984). Population dynamics of the cabbage aphid, Brevicoryne brassicae (Homoptera: Aphididae) at Vancouver, British Columbia. II. Development, fecundity, and longevity.—Can. Ent. 116, 871–878.CrossRefGoogle Scholar
Scheller, H. V. (1984). The role of ground beetles (Carabidae) as predators on early populations of cereal aphids in spring barley.—Z. angew. Ent. 97, 451–463.CrossRefGoogle Scholar
Southwood, T. R. E. (1978). Ecological methods, with particular reference to the study of insect populations.—2nd edn, 524 pp. London, Chapman & Hall.Google Scholar
Starý, P. (1972). Aphidius platensis Brethes, its distribution and host range (Hym.: Aphidiidae).—Orient. Insects 6, 359–370.CrossRefGoogle Scholar
Starý, P. & Schmutterer, H. (1973). A review of aphid parasites (Hymenoptera: Aphidiidae) in Kenya.—Z. angew. Ent. 74, 351–356.CrossRefGoogle Scholar
Sunderland, K. D. (1975). The diet of some predatory arthropods in cereal crops.—J. appl. Ecol. 12, 507–515.CrossRefGoogle Scholar
Sunderland, K. D. & Vickerman, G. P. (1980). Aphid feeding by some polyphagous predators in relation to aphid density in cereal fields.—J. appl. Ecol. 17, 389–396.CrossRefGoogle Scholar
Vickerman, G. P. & Sunderland, K. D. (1975). Arthropods in cereal crops: nocturnal activity, vertical distribution and aphid predation.—J. appl. Ecol. 12, 755–766.CrossRefGoogle Scholar
Zadoks, J. C., Chang, T. T. & Konzak, C. F. (1974). A decimal code for the growth stages of cereals.—Weed Res. 14, 415–421.CrossRefGoogle Scholar