Post-Ingestive Effects of Excelsin on Growth and Development of Spilarctia obliqua Walker

  • V. Prajapati
  • A. K. TrifathiEmail author
  • D. C. Jain
  • Sudhanshu Saxena
  • S. P. S. Khanuja
Research Article


Exposure of fouth instars of Spilarctia obliqua Walker (Lepidoptera: Arctiidae) to excelsin over a 24 h period resulted in reduced feeding and growth rates. To distinguish between antifeedant and toxic effects, growth efficiency, calculated as the slope of the regression of the relative growth rate on relative consumption rate, was compared with results from antifeedant simulation and contact toxicity bioassays. From the results, it is concluded that excelsin exerts its toxic effects at the physiological level.

Key Words

Spilarctia obliqua excelsin antifeedant effects toxicity calibration curve simulation assay 


Des chenilles du quatrième stade larvaire de Spilarctia obliqua Walker (Lepidoptera: Arctiidae), exposées à l’excelsine pendant 24 h, ont des taux d’alimentation et de croissance réduits Afin de distinguer les effets d’inappétence des effets toxiques, le rendement de la croissance, calculé comme la pente de régression du taux de croissance relative sur le taux de consommation, a été comparé avec celui obtenu lors de bioessais sur l’inappétence et sur la toxicité de contact. Les résultats obtenus permettent de conclure que l’excelsine a des effets toxiques sur la physiologie des chenilles.

Mots Clés

Spilarctia obliqua excelsine effets d’inappétence toxicité courbe de calibration essai de simulation 


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  1. Anonymous (1985) The Wealth of India (Raw Materials). Vol. 1A (Revised). Publication and Information Directorate, CSIR, New Delhi. 116 pp.Google Scholar
  2. Arnason, J.T., Philogene, B. J. R. and Morand, P. (1989) Insecticides of Plant Origin. American Chemical Society, Washington, DC. ACS Symposium Series. 387 pp.CrossRefGoogle Scholar
  3. Atri, B. S. and Prasad, R. (1980) Neem oil xtractives—An effective mosquito larvicide. Indian, J. Entomol. 42, 371–374.Google Scholar
  4. Berenbaum, M. and Finney, P. (1981) Toxicity ot angular furanocoumarins to swallowtail butterflies: Escalation in a coevolutionary arms race? Science, 212, 927–929.CrossRefGoogle Scholar
  5. Blau, P.A., Feeny, P., Contardo, L. and Robson, D.S. (1978) Allylglucosinolate and herbivorous caterpillars: A contrast in toxicity and tolerance. Science 200 1296–1298.CrossRefGoogle Scholar
  6. Crossby, D.G. (1971) Minor insecticides of plant origin pp. 177–242. In Naturally Occurring Insecticides (Edited by M. Jacobson and, D.G. Crossby). Marcel Dekker, New York.Google Scholar
  7. Farrar, R.R., Barbour, J.J. and Kennedy, G. (1989) Quantifying food consumption and growth in insects. Ann. Entomol. Soc. Am. 82, 593–598.CrossRefGoogle Scholar
  8. Finney, P. (1976) Plant apparency and chemical defence. Recent Adv. Phytochem. 10, 1–40.Google Scholar
  9. Jermy, T. (1990) Prospects of antifeedant approach to pest control. A critical Review. J. Chem. Ecol. 16, 315F-3160.CrossRefGoogle Scholar
  10. Liu, Y.B., Randall, A.A. and Bentley, M.D. (1990) Effects of epilimonol and starvation on feeding and oviposition by Leptinotarsa decemlineata. Entomol. Exp. Appl 53, 39–44.CrossRefGoogle Scholar
  11. Saxena, R.C. (1987) Antifeedants in tropical pest management. Insect Sci. Applic. 8, 731–736.Google Scholar
  12. Schmutterer, H. (1990) Properties and potential of natural pesticides from neem tree, Azadirachta indica. Annu. Reu. Entomol 35, 271–297.CrossRefGoogle Scholar
  13. Tallarida, R.J. and Murray, R.B. (1981) Pharmacologic Calculations with Computer Program. Springer-Verlag, Berlin, pp. 297–304.CrossRefGoogle Scholar
  14. Tewari, S.N. and Bhattacharya, A.K. (1987) Artificial diet for Spilosoma obliqua. Mem. Entomol Soc. India 12, IARI, New Delhi.Google Scholar
  15. Tripathi, A.K. and Jain, D.C. (1993) Excelsin: An insect feeding-deterrent isolated from Ailanthus excelsa (Simarubaceae). Phytotherapy Research 7, 323–325.CrossRefGoogle Scholar

Copyright information

© ICIPE 2002

Authors and Affiliations

  • V. Prajapati
    • 1
  • A. K. Trifathi
    • 1
    Email author
  • D. C. Jain
    • 2
  • Sudhanshu Saxena
    • 2
  • S. P. S. Khanuja
    • 1
  1. 1.Bioprospection GroupGenetic Resources and Biotechnology DivisionLucknowIndia
  2. 2.Phytochemical Technology DivisionCentral Institute of Medicinal and Aromatic PlantsLucknowIndia

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