Kaçar, GülayKoca, Abdurrahman Sami2024-09-252024-09-2520202149-8245https://doi.org/10.24180/ijaws.799991https://search.trdizin.gov.tr/tr/yayin/detay/440016https://hdl.handle.net/20.500.12491/14619Coccinellid species (Coccinellidae: Coleoptera) are important components of biologicalcontrol in programmes of sustainable plant protection practices, and well-known predators inagroecosystems, In this study, the suppession of predatory coccinellid species on seasonalpopulations dynamics of aphid and mite species in apple, cherry, and hazelnut orchards weredetermined in two distinguishing agricultural areas. Coccinellid beetle populations of pest specieswere observed in apple and cherry orchards of Bolu province, and hazelnut orchards of Düzceprovince of Turkey throughout the growing seasons of 2015 and 2016. The specimens were sampledby Steiner's funnel, mouth aspirator, and hand-picking. A total of twenty-three coccinellid speciesbelonging to 13 genera were determined. The coccinellids consisted of 13 species in apple orchards,19 species in cherry orchards, and 5 species in hazelnut orchards. Stethorus gilvifrons Mulsant (21.1%)was the most abundant coccinellid, followed by Adalia bipunctata L. (14%), Coccinellaseptempunctata L. (8.8%), and Psyllobora vigintiduopunctata L. (8.8%) in rank order of abundance inapple orchards. S. gilvifrons (21.1%), Scymnus pallipediformis Gunther (13%), and S. apetzi Mulsant(12.2%) in cherry orchards; Chilocorus renipustulatus Scriba (59.1%) and Propyleaquatuordecimpunctata L. (22.7%) were the most common coccinellid species in hazelnut orchards.Aphid populations were higher during May through August of both years. Mite populations werehigher between July and September. These results are discussed considering current thinking on theimportance of biological control as part of an integrated pest management program.eninfo:eu-repo/semantics/openAccessArticle10.24180/ijaws.79999163486495440016