The aim of this study was to register the zooplanktonic organisms in water bodies in the Botanical Garden of the Jagiellonian University in Krak?w, especially from the point of view of the occurrence of species of the Paramecium aurelia complex. In one pond, artificially constructed, the presence of P. tetraurelia was revealed.
E. Przybos, Department of Experimental Zoology, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, 31-016 Krakow, Poland, e-mail:przybos@isez.pan.krakow.pl