Entomophaga

, Volume 33, Issue 3, pp 333–338 | Cite as

The effect of fungus infection ofMetopolophium dirhodum [Hom.: Aphididae] on the oviposition behaviour of the aphid parasitoidAphidius rhopalosiphi [Hym.: Aphidiidae]

  • Patricia J. Brobyn
  • Suzanne J. Clark
  • N. Wilding
Article

Abstract

The oviposition behaviour of the hymenopterous parasitoidAphidius rhopalosiphi onMetopolophium dirhodum nymphs at successive stages of infection with the aphid-pathogenic fungusErynia neoaphidis was compared with that on uninfected nymphs. The frequency with which the parasitoid attempted to oviposit diminished in aphids inoculated with the fungus 3 days previously, that is within only 24 h of dying of the infection, but not in those infected only 1 or 2 days previously. The parasitoid did not attempt to oviposit in aphids killed by the fungus.

Key-Words

Cereal aphids parasitoid behaviour Aphidiidae Entomophthorales fungus-parasitoid interactions 

Résumé

Le comportement de ponte de l'Hyménoptère parasitoïdeAphidius rhopalosiphi a été étudié respectivement chez des larves deMetopolophium dirhodum infectées 1 jour, 2 jours ou 3 jours auparavent par le champignon entomopathogèneErynia neoaphidis et chez des larves saines. La fréquence avec laquelle le parasitoïde tente de déposer un œuf diminue dans le cas des pucerons infectés 3 jours auparavant, soit moins de 24 h seulement avant la mort par mycose; cette fréquence ne diminue pas dans le cas des pucerons infectés 1 ou 2 jours auparavant. Le parasitoïde ne tente pas de pondre dans les pucerons tués par le champignon.

Mots Clés

Pucerons des céréales comportement parasitaire Aphidiidae Entomophthorales interactions germe parasitoïde 

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References

  1. Chow, F. J. &Mackauer, M. — 1986. Host discrimination and larval competition in the aphid parasiteEphedrus californicus. —Entomol. Exp. Appl., 41, 243–254.CrossRefGoogle Scholar
  2. Decker, U. & Powell, W. — 1986. Aphid parasitoids. —Rep. Rothamsted Experimental Station 1985, pp. 96–97.Google Scholar
  3. Gardner, S. M., Ward, S. A. &Dixon, A. F. G. — 1984. Limitation of superparasitism byAphidius rhopalosiphi: a consequence of aphid defensive behaviour —Ecol. Entomol., 9, 149–155.Google Scholar
  4. Milner, R. J., Lutton, G. G. & Bourne, J. — 1984. A laboratory study of the interaction between aphids, fungal pathogens and parasites. —Proc. 4th Austr. Appl. Entomol. Res. Conf. (P. Bailey & D. Swincer eds). Adelaide, 1984, pp. 375–381.Google Scholar
  5. Powell, W., Wilding, N., Brobyn, P. J., &Clark, S. J. — 1986. Interference between parasitoids [Hym.: Aphidiidae] and fungi [Entomophthorales] attacking cereal aphids. —Entomophaga, 31, 293–302.Google Scholar
  6. Prew, R. D., Church, B. M., Dewar, A. M., Lacey, J., Plumb, R. T., Thorne, G. N., Todd, A. D. &Williams, T. D. — 1983. Effects of eight factors on the growth and nutrient uptake of winter wheat and on the incidence of pests and diseases. —J. Agric. Sci., Camb., 100, 363–382.Google Scholar
  7. Stary, P. — 1970. Biology of Aphid Parasites [Hym.: Aphidiidae] with respect to Integrated Control. — Dr.W. Junk N. V. The Hague, 643 pp.Google Scholar
  8. Vinson, S. B. — 1976. Host selection by insect parasitoids. —Annu. Rev. Entomol., 21, 109–134.CrossRefGoogle Scholar
  9. Wilding, N. — 1969. Effect of humidity on the sporulation ofEntomophthora aphidis andE. thaxteriana. —Trans. Br. Mycol. Soc., 53, 126–130.Google Scholar

Copyright information

© Lavoisier Abonnements 1988

Authors and Affiliations

  • Patricia J. Brobyn
    • 1
  • Suzanne J. Clark
    • 1
  • N. Wilding
    • 1
  1. 1.Rothamsted Experimental StationAFRC Institute of Arable Crops ResearchHarpendenU.K.

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