Franielczyk-Pietyra, Barbara
Wegierek, Piotr
Article History
Received: 24 March 2017
Revised: 4 May 2017
Accepted: 9 May 2017
First Online: 19 May 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: We neither used endangered species nor were the investigated animals collected in protected areas.