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Studies on limonoid insect antifeedants

Published online by Cambridge University Press:  19 September 2011

A. Hassanali ,
M. D. Bentley ,
E. N. Ole Sitayo ,
P. E. W. Njoroge  and
M. Yatagai
A. Hassanali
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
M. D. Bentley
Affiliation:
Department of Chemistry, University of Maine, Orono, ME 04469, U.S.A.
P. E. W. Njoroge
Affiliation:
International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
M. Yatagai
Affiliation:
Forestry and Forest Products Research Insitute, P.O. Box 16, Tsukuba, Norin Kenkyu, Danchi-nai, Ibaraki-ken, 305 Japan
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Abstract

Limonin, deoxylimonin, citrolin, obacunone, harrisonin and acetoxyharrisonin were assayed as potential antifeedanfe against the African crop pests, Spodoptera exempta, Eldana saccharina and Manica testulalis. Even at the highest applied concentration, limonin, deoxylimonin, citrolin and acetoxyharrison were not active against S. exempta. At high concentrations, obacunone and harrisonin were mildly active in S. exempta assays. Harrisonin and obacunone displayed potent activity against E. saccharina and M. testulalis.

Résumé

La limonine, la deoxylimonine, le citroline, l'obacunone, l'harrisonine et l'acetoxyharrisonine étaient tous essayés comme anti-nourrissants potentiels contre les pestes des plantes Africains sur la liste suivante: Spodoptera exempta, Eldana saccharina et Maruca testulalis. Mème avec le plus grand niveau de concentration appliqué, la limonine, la deoxylimonine, le citrolinine et l'acetoxyharrisone n'étaient pas actives contre S. exempta. Avec beaucoup de concentrations de liquide, l'obacunone et l'harrisonine ont montré très peu de reponse dans l'analyse de S. exempta. L'harrisonine et l'obacunone ont montré l'activité potentielle contre E. saccharina et M. testulalis.

Keywords

AntifeedantslimonoidstetranortriterpenoidsSpodoptera exemptaMaruca testulalisEldana saccharinalimonindeoxylimonincitrolinobacunoneharrisoninacetoxyharrisoninLes anti-nourissantsles limonoidsles tetra-nortriterpenoidsSpodoptera exemptaMaruca testulalisla limoninela deoxylimoninele citrolinel'obacunonele harrisoninel'acetoxyharrisonine
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 4 , August 1986 , pp. 495 - 499
Copyright
Copyright © ICIPE 1986

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References

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