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Phytoparasitica

, Volume 40, Issue 5, pp 451–459 | Cite as

The population trend of Palpita unionalis in different olive varieties in Egypt

  • Esmat M. Hegazi
  • Maria A. Konstantopoulou
  • Wedad E. Khafagi
  • Fredrik Schlyter
  • Annette Herz
  • Dimitris G. Raptopoulos
  • Sherif Hassan
  • Atwa Atwa
Article
  • 123 Downloads

Abstract

Jasmine moth (JM), Palpita unionalis (Hübner) (Lepidoptera: Pyralidae) is a very important pest in the commercial, densely planted olive orchards in Egypt. In years of its highest population density, it can destroy a significant part of the crop. The objectives of this study were to determine the male flight trend and egg laying trend of the JM in three large plots of different olive varieties (two varieties/plot) in two successive fruiting seasons. Differences in male flight trend and egg laying trend of JM were observed among the different varieties (‘Sennara’, ‘Toffahi’, ‘Shamy’). In 2003, more males were captured in traps placed in the Sennara/Toffahi plot than in the two Shamy/Toffahi plots. Egg densities were higher on Toffahi trees grown between Sennara trees than on Toffahi trees grown between Shamy ones. In 2004, in the plot where Toffahi and Sennara were grown together, JM females laid more eggs than in the olive plot where Toffahi rows alternated with Shamy rows. The results suggest that the Shamy variety discouraged gravid females from ovipositing, compared with Toffahi or Sennara varieties. In conclusion, olive variety, cropping system (mixed culture) and trapping season are among those characteristics that affect this pest.

Keywords

Cropping season Egg-laying trend Jasmine moth Male flight trend Olea europaea Sennara Shamy Toffahi 

Notes

Acknowledgments

This study has been carried out with partial financial support from the Commission of the European Communities, contract ICA4-CT-2001–2004 “Sustainable control of lepidopterous pests in olive groves–Integration of egg parasitoids and pheromones”; the Linneaus program “Insect Chemical Ecology, Ethology and Evolution (ICE3); and the SIDA/VR MENA Swedish Research Links funds”. We gratefully acknowledge grower-collaborator Mr. M. Sheta for providing research plots in his orchards and his co-workers for helping with field work.

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Copyright information

© Springer Science + Business Media B.V. 2012

Authors and Affiliations

  • Esmat M. Hegazi
    • 1
  • Maria A. Konstantopoulou
    • 2
  • Wedad E. Khafagi
    • 3
  • Fredrik Schlyter
    • 4
  • Annette Herz
    • 5
  • Dimitris G. Raptopoulos
    • 2
  • Sherif Hassan
    • 5
  • Atwa Atwa
    • 6
  1. 1.Department of Entomology, Faculty of AgricultureAlexandria UniversityAlexandriaEgypt
  2. 2.Chemical Ecology and Natural Products Laboratory, NCSR “Demokritos”AttikisGreece
  3. 3.Plant Protection Research InstituteAlexandriaEgypt
  4. 4.Chemical Ecology DepartmentSwedish University of Agricultural SciencesAlnarpSweden
  5. 5.Federal Biological Research Centre for Agriculture and ForestryInstitute for Biological ControlDarmstadtGermany
  6. 6.Plant Protection Research InstituteCairoEgypt

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