Ábrahám Levente (szerk.): Válogatott tanulmányok V. - Natura Somogyiensis 17. (Kaposvár, 2010)

KÖRMENDI, S.: Dél-dunántúli halastavak kerekesféreg (Rotatoria) faunája

82 NATURA SOMOGYIENSIS Rotatoria fauna in the fishponds of the South-Transdanubian Region SÁNDOR KÖRMENDI This paper summarizes the results of the Rotatoria surveys on the fish farms of Somogy, Baranya, Tolna and Zala county in the period of 1980-2010. Qualitative and quantitative Zooplankton investigation was conducted with one- and bi-weekly sampling frequency in the fish ponds. Based on the results of this study 63 Rotatoria (Ploimida / Pseudotrocha/ and Gnesiotrocha) taxons were recorded from the fish ponds. This paper makes a comparisons between Zooplankton of carp-monocultural fish ponds (prior to 1965) and Zooplankton of polycultural fish ponds. Most of occured species are characterized by cosmopolitan and well-adaptable species of high ecological tolerance. Some rare Rotatoria species occured, such as Brachionus diversicirnis homoceros and Brachionus forficula. Most of occured species can be found int he metaphyton and biotecton. The Rotatoria fauna of the fishpond indicate eutrophicpolitrophic and béta-alfa- mesosaprobic - polisaprobic water quality.