Trichogramma evanescens West. (Hym., Trichogrammatidae) as an egg parasitoid of Grape MothLobesia botrana (Den. & Schiff.) (Lep., Tortricidae)

  • Feeby N. Nasr
  • M. A. Korashy
  • Fatma F. M. Rashed
Article

Abstract

The adaptation of the primary internal parasitoid,Trichogramma evanescens (Westw.), as an egg parasitoid ofLobesia botrana (Den. & Schiff.) was the first report in Alexandria region, Egypt. The life-span of this parasitoid on eggs ofL. botrana andSitotroga cerealella Ol. was investigated.

The duration from egg to adult, longevity of adult stage, sex-ratio and total life cycle each of the two hosts were recorded. The ovipositional periods of mated females ofT. evanescens on egg ofL. botrana at 27±2co and 75±2% R.H. were studied.

Also, percentages of parasitism byT. evanescens ranged from 22%–64% on the eggs ofL. botrana. Therefore, this parasitoid was very efficient as a biocontrol agent against the most serious grape pestL. botrana in Egypt.

Keywords

Life Cycle Plant Physiology Plant Pathology Schiff Adult Stage 

References

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Copyright information

© Blackwell Wissenschafts-Verlag 1995

Authors and Affiliations

  • Feeby N. Nasr
    • 1
    • 2
  • M. A. Korashy
    • 1
    • 2
  • Fatma F. M. Rashed
    • 1
    • 2
  1. 1.Plant Protection Res. Inst.Agric. Res. CentreAlexandriaEgypt
  2. 2.Plant Protection Res. Inst.Agric. Res. CentreDokkiEgypt

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