1. Institute of Hydrobiology Biology Centre of the Czech Academy of Sciences České Budějovice Czech Republic
2. Faculty of Science University of South Bohemia České Budějovice Czech Republic
3. Institute of Entomology Biology Centre of the Czech Academy of Sciences České Budějovice Czech Republic
4. Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources Czech University of Life Sciences Prague Czech Republic