Effects of ecdysteroid compounds extracted from Silene aucheriana and halofenozide to control Reticulitermes sp. (Isoptera: Rhinotermitidae) under laboratory conditions

Document Type : Research Paper

Authors

1 M. Sc. Student, Department of Plant Protection, College of Agriculture, Shahid-Chamran University, Ahwaz, Iran

2 Associate Professor, Department of Plant Protection, College of Agriculture, Shahid-Chamran University, Ahwaz, Iran

3 Associate Professor, Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: 14115-3361, Tehran, Iran

4 Ph. D. Student, Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

Abstract

Ecdysteroid compounds such as phytoecdysteroids and ecdysone analogues have been considered for their potential ability to control pests. Ecdysone-agonist disrupting molting processes can induce precocious death. The aim of this research was to evaluate the effects of ecdystroid extracts of Silene aucheriana Boiss (family Caryophyllaceae) to control Reticulitermes sp. termite in comparison with halofenozide under choice and non-choice feeding conditions. Probit analysis of the data using time instead of dosage indicated that final mortality and the speed of death were dependent on dose. The percentage mortality were 54%, 60%, 76% and 80% at concentrations of 1000, 2500, 5000 and 10000 ppm, respectively at the end of the choice test period for halofenozide. The percentage mortality were 58%, 68%, 75% and 89% at concentrations of 5%, 10%, 20% and 40 %, respectively at the end of the choice test period for S. aucheriana. The general effects of ecdysteroid compounds, were observed including incomplete ecdysis and subsequent mortality. Overall, the results indicated that ecdysteroid compounds are effective for control Reticulitermes sp. Therefore it is necessary to establish comprehensive studies on the effects of ecdysteroid compounds for practical use in termites control.

Keywords

References

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Iranian Journal of Plant Protection Science
Volume 46, Issue 1 - Serial Number 1
Spring & Summer
May 2015
Pages 69-78

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History

  • Receive Date: 26 November 2014
  • Revise Date: 03 February 2015
  • Accept Date: 16 June 2015

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