Information from: Ebert D., Ecology, Epidemiology, and Evolution of Parasitism in Daphnia (Internet) Bethesda (MD): National Center for Biotechnology Information (US); 2005. Chapter 2, Introduction to Daphnia Biology. Sai S., Bharat V., Vikash K., and Sai M., Daphnia Anatomy (BVS^2 WEBSITE)