About the Authors

Petr Kocarek

petr.kocarek@osu.cz

Affiliation Department of Biology and Ecology, Faculty of Science, University of Ostrava, Ostrava, Czech Republic

Vaclav John

Affiliation Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic

Pavel Hulva

Affiliations Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czech Republic, Life Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, Czech Republic

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PK PH VJ. Performed the experiments: PH VJ. Analyzed the data: PH VJ PK. Contributed reagents/materials/analysis tools: PK PH VJ. Wrote the paper: PK PH VJ.