William A. Cresko, University of Oregon (IMAGE) University of Oregon Caption William A. Cresko, a biologist in the University of Oregon's Institute of Ecology and Evolution, checks his collection of threespine stickleback in his laboratory. Credit Photo by Charlie Litchfield Usage Restrictions None License Licensed 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.