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Effects of neem (Azadirachta indica A. Juss) extracts on food intake and utilisation in the African armyworm, Spodoptera exempta (Walker)

Published online by Cambridge University Press:  19 September 2011

Paul B. Tanzubil
Paul B. Tanzubil
Affiliation:
Nyankpala Agricultural Experiment Station (CRI), P.O. Box 52, Tamale, Ghana
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Abstract

Azadirachtin, the principal active ingredient of neem seed and aqueous neem seed extracts (ANSE) reduced food intake and utilisation efficiency in the penultimate instar level of the African armyworm (Spodoptera exempta) when applied either topically or mixed with the diet of the insect. These observations reflect interference of neem with centres in the insect that regulate feeding and metabolism. The decreased food utilisation efficiency in treated insects indicated higher metabolic costs as they had to direct some energy into dealing with neem deposits in their bodies rather than biomass production.

Résumé

L'azadirachtine, principale matière active des graines du neem (Azadirachta indica), et d'extraits aqueux de sa graine a réduit l'ingestion de lanourriture ainsi que l'efficacité d'utilisation chez l'avant dernièr stade de la chenille processionnaire (Spodoptera exempta) lorsque l'extrait fut appliqué soit directement sur l'individu soit melangé à sa nourriture. Ceci reflète l'influence de l'extrait du neem sur les centres régulateurs du métabolisme et de nutrition. La diminution de l'efficacité métabolique chez les individus donne une indication des coûts métaboliques plus élevés, car ceux-ci devant détourner une partie de leur énergie de production vers la neutralisation des déchets d'extraits du neem plutôt que vers la production de biomasse.

Keywords

neemAzadirachta indicafood intakeAfrican armywormSpodoptera exemptafood utilisation efficiencyneemAzadirachta indicaingestion de nourriturechenille processionnaireSpodoptera exemptaefficacité de métabolisation
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 16 , Issue 2 , June 1995 , pp. 167 - 170
Copyright
Copyright © ICIPE 1995

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References

REFERENCES

Amason, J. T., Philogere, B. J. R., Donsker, N., Hudoh, M., McDougall, C., Fortier, G., Morand, P., Gerdver, D., Lambert, J., Morris, C. and Nozzolillo, C. (1985) Antifeedant and insecticidal properties of azadirachtin against the European corn borer, Ostrinia nubilalis. Ent. Exp. Appl. 38, 29–34.Google Scholar
Barnsby, M. A. and Kloeke, J. A. (1987) Effect of azadirachtin on nutrition and development in the tobacco budworm, Heliothis virescens. J. Insect Physiol. 33, 69–75.CrossRefGoogle Scholar
Brown, E. S. (1970) Control of the African armyworm: An appreciation of the problem. East African Agric. For. J. 35, 237–245.CrossRefGoogle Scholar
Brown, E. S., Betts, E. and Rainey, R. C. (1969) Seasonal changes in distribution of the African armyworm with special reference to Eastern Africa. Bull. Ent. Res. 58, 661–728.CrossRefGoogle Scholar
Fagoonee, I. and Lange, G. (1981) Noxious effects of neem extract on Crocidolomia binotalis. Phytoparasitica 9, 111–118.CrossRefGoogle Scholar
Redfern, R. E., Warmen, J. D., Uebel, E. C. and Mills, G. D. (1981) The antifeedant and growth disrupting effects of azadirachtin on Spodoptera frugiperda and Oncopeltisfasciatus. In Proc. 1st Int. Neem Conf. (Edited by Schmutterer, H., Ascher, K. R. S. and Rembold, H.), pp. 129–136.Google Scholar
Schmutterer, H. and Ascher, K. R. S. (Eds) (1984) Proceedings of the Second International Neem Conference (Rauischolzhausen, 1983), 587 pp. GTZ, Eschborn.Google Scholar
Schmutterer, H., Ascher, K. R. S. and Rembold, H. (Eds) (1981) Proceedings of the First International Neem Conference (GTZ, Rottach-Egern, 1980), 297 pp.Google Scholar
Schoonhoven, L. M. and Jermy, T. (1977) A behavioural and electrophysiological analysis of insect feeding deterrents. In Crop Protection Agents: Their Biological Evaluation (Edited by McFarlane, N. R.), pp. 133–145. Academic Press, New York.Google Scholar
Seiber, K. P. and Rembold, H. (1983) The effects of azadirachtin on the endocrine control of moulting in Locusta migratoria. J. Insect Physiol. 29, 523–527.Google Scholar
Simmonds, M. S. J. and Blaney, W. M. (1984) Some neurophysiological effects of azadirachtin on Lepidopteran larvae and their feeding response. In Proc. 2nd Int. Neem Conf. (Edited by Schmutterer, H. and Ascher, K. R. S.), pp. 163–180.Google Scholar
Tanzubil, P. B. (1989) Effects of neem on the African armyworm (Spodoptera exempta) and their implications for field control. M.Phil, thesis, Univ. of Reading, UK.Google Scholar
Tanzubil, P. B. (1991) Control of some insect pests of cowpeas with neem (Azadirachta indica) in Northern Ghana. Trop. Pest Manage. 37, 216–217.CrossRefGoogle Scholar
Tanzubil, P. B. and McCaffery, A. R. (1990) Effects of azadirachtin and aqueous neem seed extracts on survival, growth and development of the African armyworm. Crop Prot. 9, 383–386.CrossRefGoogle Scholar
Waldbuaer, G. P. (1968) The consumption and utilization of food by insects. Adv. Insect Physiol. 5, 229–288.CrossRefGoogle Scholar