Determination of distribution and population change of Drosophilidae (Diptera) species in cherry and peach orchards in Tokat province (Türkiye)

In this study, the presence and prevalence of Drosophilidae species were studied in cherry and peach plantations of Tokat province in 2021-2022. In addition, the population of the species belonging to the family was monitored for two years in one peach and cherry plantations in central district of Tokat. According to the results, a total of 10 species were recorded. These species are Drosophila hydei Sturtevant, 1921, D. immigrans Sturtevant, 1921, D. melanogaster Meigen, 1830, D. phalerata Meigen, 1830, D. simulans Sturtevant, 1919, D. subobscura Collin, 1936, D. suzukii (Matsumura, 1931), Gitona distigma Meigen, 1830, Scaptomyza pallida (Zetterstedt, 1847), D. transversa Fallen, 1823. Of these, 10 species were determined in the central district of Tokat, 9 species in Erbaa, 8 species in Turhal and 6 species in Pazar. D. subobscura Collin, 1936 was the most common species in cherry and peach fields in central district of Tokat in 2021 and 2022. In Erbaa, D. subobscura was the most common species in cherry fields in 2021 and D. hydeii Sturtevant, 1921 and S. pallida (Zetterstedt, 1847) took the first place in terms of prevalence in peach fields. In 2022, the most common species in cherry and peach fields was D. subobscura in Erbaa. While D. hydei was the most common species in cherry and peach plantations in Turhal in 2021, D. immigrans Sturtevant, 1921 in cherry fields, and D. subobscura in peach fields were common in 2022. In the cherry fields in Pazar, the common species was D. immigrans in 2021 and D. subobscura in 2022. D. suzukii (Matsumura, 1931), one of the important species in the family, was recorded in cherry and peach plantations in central district of Tokat and Erbaa, and in peach plantations in Turhal. D. suzukii was seen for the first time on 25 Aug. (2 specimens) in the cherry fields of Tokat Centre in 2021, while it could not be detected in the peach fields. In 2022, the first adult detection in cherry areas was made on 29 Aug. (7 specimes) and in peach areas on 08 Aug. (1 specimen). This study is the first detailed study on Drosophilidae family in Tokat (Türkiye) province.