Amoeboid Trophonts (image) Virginia Institute of Marine Science Caption Photomicrograph of the amoeboid trophont life stage of Hematodinium from the blue crab Callinectes sapidus. "Trophont" refers to the adult, mobile life stage of certain protozoans. Credit Image courtesy of professor Jeff Shields/VIMS. Usage Restrictions One-time use only. 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.