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Growth Disruption in Opisina arenosella Walker by Plumbagin, A Naturally Occurring Insect Growth Regulator
Published online by Cambridge University Press: 19 September 2011
Abstract
Plumbagin, a napthoquinone from the plant Plumbago zeylanica, delayed pupation when topically applied to newly moulted final instars of the leaf eating caterpillar Opisina arenosella Walker (Lepidoptera: Oecophoridae). Pupae from treated larvae emerged into non-viable adults and had abnormalities such as deformed wings and shrunken abdomens; they also died much before the control insects. The results suggest that plumbagin interferes with the process of development and ecdysis of the insect.
Résumé
La plumbagine, une napthoquinone extraite de Plumbago zeylanica, retarde la nymphose quand elle est appliquée juste au début du dernier stade larvaire de la chenille d'Opisina arenosella Walker (Lepidoptera: Oecophoridae). Les chrysalides obtenues après le traitement des larves meurent davantage et donnent des adultes non viables avec des anomalies telles que des ailes déformées et des abdomens atrophiés. Les résultats suggèrent que la plumbagine agit sur le développement et la mue de l'insecte.
Keywords
- Type
- Rapid Communication
- Information
- International Journal of Tropical Insect Science , Volume 22 , Issue 4 , December 2002 , pp. 321 - 323
- Copyright
- Copyright © ICIPE 2002
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