About the Authors

Michael H. Parsons

M.Parsons@Murdoch.edu.au

Affiliations Centre for Ecosystem Diversity and Dynamics (CEDD), Department of Environmental Biology, Curtin University, Perth, Western Australia, Australia, School of Veterinary Biology and Biomedical Sciences, Murdoch University, Murdoch, Western Australia, Australia

Daniel T. Blumstein

Affiliation Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, United States of America

Competing Interests

Dr. Michael Parsons declares a competing interest on behalf of himself, sponsor Chemistry Centre WA, Ms. Carol Lander and Mr. Warren Potts (both acknowledged in the paper). The authors have applied for an Australian patent (AU-2007202833) based on their findings.

Author Contributions

Conceived and designed the experiments: MHP. Performed the experiments: MHP. Analyzed the data: MHP DTB. Contributed reagents/materials/analysis tools: MHP. Wrote the paper: MHP DTB. Post doctoral supervisor for Parsons: DTB. Assisted data analysis and writing: DTB.