Akademik Veri Yönetim Sistemi
Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, cilt.110, sa.5, ss.505-511, 2003 (SCI-Expanded, Scopus)
The globose scale (GS) Sphaerolecanium prunastri Fonscolombe (Hemiptera: Coccoidea) is a common and harmful soft scale species which attacks Prunus spp. and other stone fruit trees throughout the Holarctic, including the Isparta Province of Turkey. A study is being undertaken on the phenology of GS in Isparta Province and, in particular, the chalcidoid parasitoids are being studied for their possible role in biocontrol of GS. Five study sites were chosen as representative of the stone fruit-growing area of the Isparta region. This is the first study on the phenology, degree of plant damage and host-parasitoid relations of this scale in Turkey. The experimental sites included three in which pesticides were being used and two that were undisturbed conserved areas. The 15 species of chalcidoid parasitoids of GS known for the southeastern Europe are listed, and a comparison of the parasitoid complexes of Turkey and some of other European countries is given. The observations revealed that the scale was heavily parasitized in the unsprayed plots. Parasitism by the chalcidoid complexes did not differ in seasonal occurrence and abundance, and was stable. The main primary parasitoid of GS was Discodes coccophagus Ratzeburg (Hymenoptera: Encyrtidae). The species Aprostocetus trjapitzini Kostjukov is recorded for the first time in Turkey.