1. Institute for Environmental Studies; Faculty of Science; Charles University in Prague; Prague Czech Republic
2. Department of Biological and Environmental Sciences; University of Gothenburg; Gothenburg Sweden
3. Department of Zoology and Fisheries; Faculty of Agrobiology; Food and Natural Resources; Czech University of Life Sciences Prague; Prague Czech Republic
4. Institute of Animal Physiology and Genetics; Academy of Sciences of the Czech Republic; Liběchov Czech Republic