Lead author and PhD student Patt Finnerty (IMAGE) University of Sydney Caption Lead author and PhD student Patt Finnerty from the School of Life and Environmental Sciences at the University of Sydney. Credit The University of Sydney Usage Restrictions This story only License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.