1. Ecotoxicology Research Group, Department of Zoology and Entomology, Faculty of Natural and Agricultural Sciences, University of the Free State, Phuthaditjhaba, South Africa
2. Ecotoxicology Research Group, Department of Applied Biology and Biochemistry, National University of Science and Technology, Bulawayo, Zimbabwe
3. Afromontane Research Unit, University of the Free State, Phuthaditjhaba, Qwaqwa, South Africa