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Effect of plant chemicals on food consumption of three lepidopteran larvae

Published online by Cambridge University Press:  19 September 2011

M. Senthamizhselvan  and
J. Muthukrishnan
M. Senthamizhselvan
Affiliation:
School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, India
J. Muthukrishnan
Affiliation:
School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, India
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Abstract

Feeding on Ricinus communis leaf treated with different concentrations (0.1, 0.3 and 0.5%) of ether extracts of Erithrina indica seed and Delonix regia flower against Ergolis merione, Porthesia scintillans and Spodoptera exigua resulted in high larval and pupal mortality. Food consumption, assimilation, conversion and fecundity decrease with increasing concentration. Larval mortality was 20 to 91 % and damage was decreased by 65% through the application of the highest concentration of each chemical.

Résumé

Se nouir en Ricinus communis furille treté avec des concentration différente (0,1, 0,3 et 0,5%) d'extraction d'ether de Erithrina indica de recine et de fleur Delonix regia contre Ergolis merione, Porthesia scintillans et Spodoptera exigua résulte en mortalité de chinille et de pupal élevé. La consommation de neurriture, assimulé, changé et fécondé diminue avec la concéntration montente. La mortalité des chenille était de 20 à 91% et la décroissance par 65% par là de là haute concentration de chaque produit application chemique.

Keywords

Food consumptionplant chemicalsErithrina indicaDelonix regia
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 13 , Issue 3 , June 1992 , pp. 429 - 434
Copyright
Copyright © ICIPE 1992

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