Trabzon Bölgesinin Tatlısu Malakofaunası ve Dağılımı, Türkiye

ABSTRACT In this study, freshwater mollusks and their zoogeographical distributions in Trabzon region were investigated. During the period of June-December 2021, samples were collected from 38 freshwater river localities. From the study area, Ancylus fluviatilis from gastropoda class Planorbidae family, nonnative species Physella acuta from Physidae family, and Dreissena polymorpha from Bivalvia class and Dreissenidae family were identified. While A. fluviatilis specimens were sfound from all freshwater systems in Trabzon region, the non native Physella acuta could be identified from Fol Stream, Yıldızlı Stream, Sera Lake and Manahoz River. Empty shells belonging to the D. polymorpha species were identified from the area where Çatalzeytin Stream joins the sea. P. acuta and D. polymorpha are new records for the freshwater streams of Trabzon region.