К фауне моллюсков семейства Bithyniidae (Gastropoda, Pectinibranchia) Свердловской области : Towards the fauna of molluscs of the family Bithyniidae (Gastropoda, Pectinibranchia) of the Sverdlovsk region

• Main Authors: Андреева Светлана Иосифовна, Андреев Николай Игоревич, Гребенников Максим Евгеньевич
• Format: Report
• Language: unknown
• Published: Фауна Урала и Сибири 2018
• Subjects: Mollusca; Урал; малакофауна.; Urals; malacofauna.; Ice Sheet
• Online Access: https://dx.doi.org/10.24411/2411-0051-2018-10102; https://cyberleninka.ru/article/n/k-faune-mollyuskov-semeystva-bithyniidae-gastropoda-pectinibranchia-sverdlovskoy-oblasti/pdf

По материалам коллекции Музея Института экологии растений и животных УрО РАН изучен видовой состав гребнежаберных моллюсков сем. Bithyniidae (Gastropoda, Pectinibranchia) из водоемов Свердловской обл. Определено 12 видов, относящихся к 5 родам: Bithynia (4), Boreoelona (1), Digyrcidum (2), Opisthorchophorus (3) и Paraelona (2). В зоогеографическом плане это виды преимущественно европейского происхождения. : We studied the mollusc samples collected in the Sverdlovsk region and stored in the malacological collection of the Museum of the Institute of Plant and Animal Ecology (the Ural branch of the Russian Academy of Sciences). Samples from the collection of the Zoological Institute of the Russian Academy of Sciences were also studied. In total, 65 samples containing 287 specimens of Bythiniid snails (dried shells only) were studied. An annotated list of the Bythiniidae of the Sverdlovsk region includes 12 species belonging to 5 genera: Bithynia (4 species), Boreoelona (1 species), Digyrcidum (2 species), Opisthorchophorus (3 species) and Paraelona (2 species). Snails of the genera Bithynia and Digyrcidum were most abundant which may be explained by the fact that most of the studied samples were collected from lotic water habitats that are most suitable for snails of these 2 genera. Three species: Digyrcidum starobogatovi, Bithynia curta and B. decipiens were the most numerous in the studied collection whereas other 3 species (Opisthorchophorus troscheli, Paraelona socialis and P. milachevitchi) were represented by single specimens. From the zoogeographical point of view, 75% of the species inhabiting the Sverdlovsk region are of European origin and the European-Western-Siberian distribution type. Boreoelona sibirica was the only species of presumably Eastern Asian origin and may represent an example of an advance of the East Siberian fauna towards Europe as a consequence of the Pleistocene ice sheet retreat driven by the Holocene warming.