Funding for this research was provided by:
Austrian Science Fund (P24788-B22, T699-B24, W1234-G17)
Article History
Received: 16 January 2019
Accepted: 25 February 2019
First Online: 22 March 2019
Ethics approval
: The frogs used in this experiment were part of an ex situ laboratory population of the University of Vienna’s animal care facilities. Original stock for this population was sampled and exported in compliance with all legal requirements from the responsible French authorities (DIREN: Arrete n°82 du 10.08.2012 and Arrete n°4 du 14.01.2013). The experimental procedures used for this study were approved by the ethics animal welfare committees of the University of Veterinary Medicine Vienna and the University of Vienna. They were strictly designed according to the current Austrian legislation and good scientific practice guidelines and followed the ASAB guidelines for treatment of animals in behavioural research and teaching.
: Not applicable.
: The authors declare that they have no competing interests.
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