About the Authors

Sanet Hugo

shugo@zoology.up.ac.za

Affiliation Department of Zoology and Entomology, DST-NRF Centre of Excellence for Invasion Biology, University of Pretoria, Pretoria, South Africa

Berndt J. Van Rensburg

Affiliations Department of Zoology and Entomology, DST-NRF Centre of Excellence for Invasion Biology, University of Pretoria, Pretoria, South Africa, School of Biological Sciences, University of Queensland, Brisbane, Australia

Abraham E. Van Wyk

Affiliation Department of Plant Science, University of Pretoria, Pretoria, South Africa

Yolande Steenkamp

Affiliation Biosystematics Research & Biodiversity Collections Division, South African National Biodiversity Institute, Pretoria, South Africa

Competing Interests

The authors have read the journal’s policy and have noted the potential conflict of interest arising from one of the co-authors, Yolande Steenkamp, being affiliated with the South African National Biodiversity Institute, which can be viewed as a commercial company. However, this institute did not fund the study or otherwise influence the study, and does not gain financially from the results or the publication. Further, this affiliation does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AEVW BJVR SH YS. Performed the experiments: SH. Analyzed the data: SH. Contributed reagents/materials/analysis tools: YS. Wrote the paper: SH BJVR AEVW YS. Provided expert knowledge for the interpretation of the results: BJVR AEVW. Provided advice on the analyses: YS.