| Autor: |
Nasr, Feeby, Korashy, M., Rashed, Fatma |
| Zdroj: |
Anzeiger für Schädlingskunde Pflanzenschutz Umweltschutz; February 1995, Vol. 68 Issue: 2 p44-45, 2p |
| Abstrakt: |
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. |
| Databáze: |
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