1. Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic, e-mail:
2. Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czech Republic; e-mail: , blazek@ivb.cz, reichard@ivb.cz
3. Central European Institute of Technology, Masaryk University, Brno, Czech Republic; e-mail: , on.slaby@gmail.com