29 BİTKİ KORUMA BÜLTENİ 2016, 56(1): 29-47 ISSN 0406-3597 Orta Anadolu Bölgesi’nde parazitoit Trissolcus (Hym.: Scelionidae) türlerinin popülasyon değişimi ve konukçusu süne [Eurygaster spp. (Hem: Scutelleridae)] ile ilişkileri 1 Münevver KODAN 2 M. Oktay GÜRKAN 3 ABSTRACT Population fluctuations of parasitoid Trissolcus (Hym.: Scelionidae) species and its relations with the host is sunn pest [Eurygaster spp. (Hem:Scutelleridae)]in Central Anatolia Region The study was carried out in wheat field in Ankara and Konya provinces during 2004 and 2005 years. Population fluctuations of Trissolcus species which are egg parasitoids of sunn pest were determined by hanging yellow sticky traps in area surrounded by trees and in wheat field and by counting parasitized egg batches of sunn pest. Sunn pest population and relationship with parasitoid were determined by counting frame (50x50cm) in the wheat field. In Central Anatolia Region, Trissolcus spp., has begun to emerge from overwintering when the temperature was 12 o C and above it. The last parasitoid has seen in September. It was determined that first parasitoid emerge from overwintering was female. Female parasitoid population mostly was seen in the wheat field and male parasitoid population has been recorded in the wooded area. However, it was determined that parasitoids have always an activity between wheat fields and wooded areas. This study showed that Trissolcus species have 2 generations in per year in wheat fields. Sunn pest eggs were determined in wheat field starting from the first week of may until the third week of june. Parasitized sunn eggs were recorded from may to july. Two different Trissolcus species were obtained from parasitized eggs; these species were T. rufiventris (Mayr) and T. semistriatus Nees was dominant species in parasitized sunn pest eggs. Keywords: Trissolcus spp., Eurygaster spp. wheat, Central Anatolia 1 “Yumurta Parazitoidi Trissolcus (Hymenoptera: Scelionidae) Türlerinin Orta Anadolu Bölgesinde Biyolojisi Üzerinde Araştırmalar” isimli doktora tezinin bir bölümüdür. 2 Zirai Mücadele Merkez Araştırma Enstitüsü- Yenimahalle/Ankara 3 Ankara İleri Teknoloji Yatırımları A.Ş. Ank. Üniver. Teknoloji Geliştirme Bölgesi Gölbaşı/Ankara Sorumlu yazar (Corresponding author) e-mail:munevverkodan@gmail.com Alınış (Received): 29.04.2015, Kabul ediliş (Accepted): 18.01.2016