Control Of <i>Epilachna Vigintioctopuntata</i> Fab. (Coleoptera: Coccinellidae) Using Some Indigenous Plant Extracts

Authors

  • Kamrul Islam Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet
  • M Saiful Islam Department of Zoology, University of Rajshahi, Rajshahi
  • Zennat Ferdousi Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi

DOI:

https://doi.org/10.3329/jles.v6i0.9725

Keywords:

Epilachna, life-history traits, indigenous plants, aqueous extract, phytochemicals

Abstract

Epilachna vigintioctopunctata is an important pest that causes considerable economic losses to many crops including egg-plants. The crude aqueous extracts of leaves from three indigenous plants namely Ricinus communis, Calotropis procera and Datura metel were used against this beetle aiming at its control under laboratory conditions. Larvicidal bioassays of the extracts showed the following order of toxicity: R. communis (LC50=18.40%) > C. procera (LC50=23.70%) > D. metel (LC50=29.61%). Subsequent data on some vital life-history traits were promising because the extracts significantly reduced both oviposition and egg-hatch, prolonged larval duration (P<0.001), and inhibited pupae formation and adult emergence (P<0.05). However, female ratio was not significantly affected by the treatments. Relevance of these findings on the control of this phytophagous species has been discussed.

DOI: http://dx.doi.org/10.3329/jles.v6i0.9725

JLES 2011 6: 75-80

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How to Cite

Islam, K., Islam, M. S., & Ferdousi, Z. (2012). Control Of <i>Epilachna Vigintioctopuntata</i> Fab. (Coleoptera: Coccinellidae) Using Some Indigenous Plant Extracts. Journal of Life and Earth Science, 6, 75–80. https://doi.org/10.3329/jles.v6i0.9725

Issue

Vol. 6 (2011)

Section

Articles

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It is a condition of publication in the Journal that author(s) assigns copyright to the Faculty of Life and Earth Sciences, University of Rajshahi, whose permission must be obtained to reproduce there from. This would ensure efficient handling of reproduction of articles for third party requests and wide dissemination at large.