Asunción Semper-Pascual (IMAGE) Rice University Caption Asunción Semper-Pascual is a postdoctoral researcher at the Norwegian University for Life Sciences and the lead author on the study. Credit (Photo courtesy of Asunción Semper-Pascual) Usage Restrictions Must credit Asunción Semper-Pascual. 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.