Akademik Veri Yönetim Sistemi
PHYTOPARASITICA, cilt.32, sa.3, ss.295-304, 2004 (SCI-Expanded)
Populations of pear psylla, Cacopsylla pyri (L.) (Rhynchota: Psyllidae), and its natural enemies were sampled on pears in Antalya province during the years 2000-2002. Thirty-two species of predators and three species of parasitoids were detected to be associated with C. pyri in Antalya province. The heteropterans (especially anthocorid species) were the most abundant predator group. Among the anthocorids, Anthocoris nemoralis (Fabricius) (Heteroptera: Anthocoridae), whose population was closely related to the dynamics of the pear psylla population, was generally the principal antagonist of C. pyri. Other species recorded during the study were the mirid Deraeocoris spp., the chrysopid Chrysoperla carnea L., and many coccinellid species. Although these predators are polyphagous, as are the Orius species, their populations were related to the psylla fluctuations. Among the parasitoid complex belonging to the order Hymenoptera, the encyrtid Trechnites psyllae (Ruschka) was the only primary parasitoid. Two hyperparasites, viz., Syrphophagus mamitus (Walker) and Pachyneuron aphidis (Bouche) (Encyrtidae and Pteromalidae, respectively), were detected in the surveys. Also, this study revealed new information concerning the pear psylla parasitoid complex in Turkey. While T psyllae and S. mamitus are new records to Turkish parasitoid fauna, C. pyri is a new host record for P. aphidis. The population development and abundance of pear psylla and its natural enemies, as well as the parasitization rates in treated and untreated pear orchards, are presented here.