Issues:
Sections:
Issue 93
GENERAL BIOLOGY
UDK: 594.1+574.9
THE DEVELOPMENT OF NEW HABITATS BY THE INVASIVE SPECIES OF THE CORBICULA GENUS
KHLOPKOVA Marina Vladimirovna,
ZURKHAEVA Umshanat Dzhamaldinovna
At the present stage, the autochthonous Caspian mollusk fauna is being displaced by the invasive species. The Corbicula fluminea and C. fluminalis species (O.F. Muller, 1774), new to the ecosystems of the Russian sector of the Middle Caspian Sea, have been discovered for the first time. Representatives of the Corbicula genus are included in the list of the 100 most active invasive species. The development of new habitats by the Corbicula is observed. In 2018-2023, individuals of the bivalve mollusk Corbicula fluminalis were found in the waters of the northern part of the Agrakhan Bay, in the areas of the Chased Gates, and the Kubyakinsky Bank river. In the area of the mouth of the Sulak River in 2019, single specimens of Corbicula fluminea were found, while in 2023-2024 more than 300 mollusk shells. The studied samples are dominated by corbicles of size and age groups corresponding to the age from 1.5 to 3 years, which indicates a recent settlement in a new reservoir for them. It is assumed that representatives of the Corbiculidae are introduced into the basin of the Caspian Sea with the ballast waters of ships plying through the Volga-Don Canal. The data obtained expand understanding of the morphological variability of corbicles.
Pages: 18 - 24
Date: 28.06.2024