Egg parasitoids of Lobesia botrana (Den. & Schiff.) (Lepidoptera: Tortricidae) in the vineyards of Izmir and Manisa Provinces in Turkey

Abstract

The study was carried out to determine egg parasitoids of Lobesia botrana (Den. & Schiff.) on Sultani Cekirdeksiz grape in Izmir and Manisa between 2009–2011. Both eggs found on grape berries in vineyards and the eggs reared in the lab and mounted onto bunches were used to determine egg parasitoids. Minimum 50 lab-reared eggs were mounted at the level of bunches in each vineyard. These eggs were re-collected after 2–4 days and maintained in the climate room for checking daily if parasitized. Parasitism rate by Trichogramma euproctidis Girault (Hymenoptera: Trichogrammatidae) on mounted L. botrana eggs was determined as 8% in conventional vineyard of Sarıgöl in 2009, whereas it was found 10.91% in conventional vineyard of Salihli, 5% in organic vineyard of Alaşehir and 1.33% in integrated vineyard of Menemen in 2010. Natural parasitism of L. botrana eggs on berries by T. euproctidiswas determined as 10% and 16% in integrated vineyard of Alaşehir in 2009 and 2010, respectively. T. euproctidisparasitized 38.6% of eggs whereas T. brassicae(Bezdenko) parasitised 1.44% of eggs on the berries in 2011. T. euproctidis and T. brassicae have been determined on the eggs of L. botrana in the Aegean Region, Turkey for the first time.