1. Institute of Vertebrate Biology of the Czech Academy of Sciences Brno Czech Republic
2. Faculty of Science Masaryk University Brno Brno Czech Republic
3. Faculty of Agronomy Mendel University Brno Czech Republic
4. Faculty of Fisheries and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses University of South Bohemia in České Budějovice Vodňany Czech Republic
5. Institute of Marine Biology of the National Academy of Sciences of Ukraine Odessa Ukraine