TERATOLOGICAL CHANGES OF CYCLOPS VICINUS ULYANIN, 1875 (COPEPODA, CYCLOPOIDA) FROM VAYA LAKE (BULGARIA)
ELENA NENOVA*
Sofia University, Faculty of Biology, Department of Zoology and Anthropology, 8, Dragan Tzankov blvd., Sofia 1164, Bulgaria
*Corresponding author: elena_pnenova@abv.bg
Keywords: zooplankton, teratology, anthropogenic impact
Abstract: The zooplankton of Vaya Lake (Bulgaria) was investigated in 2005 and a specimen of C. vicinus was found with teratological changes concerning shortening of the furca and changing in the number of bristles on it. This type of change was first reported in zooplankton forms in Vaya Lake, which during the study period had a discontinuous connection to the sea and was influenced by increased anthropogenic pressure, especially in its western and northern parts.