Prawns Battle 'Blood Flukes' (IMAGE) University of California - Berkeley Caption River prawns, like this Macrobrachium prawn raised in a local hatchery in the Senegal River basin, can consume a dozen or more snails per day. A team led by University of California, Berkeley, scientists, has shown how communities can harness freshwater prawn's voracious appetite for snails to battle the parasite that causes schistosomiasis, while still making money selling the prawns for food. Credit Photo courtesy of Hilary Duff of the Planetary Health Alliance Usage Restrictions With credit In stories that reference the Nature Sustainability study 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.