Funding for this research was provided by:
National Research Foundation (Professional Development Programme)
Article History
Received: 6 August 2018
Accepted: 2 February 2019
First Online: 13 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All applicable institutional and/or national guidelines for the care and use of animals were followed. Samples were collected under permits from the Department of Environmental Affairs in South Africa (Permit numbers RES2012/35, RES2013/65, RES2014/48, RES2015/36 and RES2016/14).