1. School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa;
2. Centre for Environmental Management, University of the Free State, Bloemfontein, South Africa;
3. Biotechnology Unit, Faculty of Science and Agriculture, University of Limpopo, Sovenga, South Africa;
4. Department of Biodiversity, Faculty of Science and Agriculture, University of Limpopo, Sovenga, South Africa