1. Department of Ecology; Faculty of Science; Charles University; Prague Czech Republic
2. Laboratory of Evolutionary Ecology of Hydrobionts; Nature Research Centre; Vilnius Lithuania
3. Department of Biology-Chemistry; Faculty of Chemistry, Biology, Geography; West University of Timişoara; Timişoara Romania
4. Department of Invertebrate Zoology and Hydrobiology; Faculty of Biology and Environmental Protection; University of Lodz; Łódź Poland