1. Institute of Environmental Biology, University of Wrocław, Sienkiewicza 21, PL-50-335 Wrocław, Poland
2. Department of General Biology and Genomics, L.N. Gumilyov Eurasian National University, Kazhymukan 13, 010008 Astana, Kazakhstan
3. Department of Wildlife Conservation, Institute of Nature Conservation, Polish Academy of Sciences, AI. Mickiewicza 33, PL-31-120 Kraków, Poland
4. Inland Fisheries Institute, Żabieniec, Główna 48, PL-05-500 Piaseczno, Poland