1. Institute of Vertebrate Biology Czech Academy of Science Brno Czech Republic
2. Department of Zoology, Faculty of Science Charles University Prague Czech Republic
3. Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses University of South Bohemia in České Budějovice Ceske Budejovice Czech Republic
4. Department of Botany and Zoology, Faculty of Science Masaryk University Brno Czech Republic
5. Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection University of Łódź Łódź Poland