Downing Lake, Indiana (IMAGE) Georgia Institute of Technology Caption Downing Lake, shown here, was one of seven Indiana lakes researchers monitored during a four-month period to assess how the Daphnia dentifera population quickly evolved to survive epidemics of a virulent yeast parasite Metschnikowia bicuspidata. Credit Indiana University/David Civitello 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.