FIRST FINDING OF <i>BRANCHIURA SOWERBYI </i>BEDDARD, 1892 (OLIGOCHAETA, TUBIFICIDAE) IN THE RYBINSK RESERVOIR

Abstract

The first finding of the cosmopolite freshwater oligochaete Branchiura sowerbyi Beddard, 1892 in the Rybinsk Reservoir is reported. The oligochaete B. sowerbyi was first recorded in the Volga River basin. The species was found in the biotope of grеy silt at a depth of 8 m near Vaganikha Island in the Sheksna Reach of the Rybinsk Reservoir in October 2019.