Trematodes (Parasitic Flatworms)


Trematodes

Also known as digenetic trematodes, or flukes, trematodes are parasitic flatworms that utilize at least two hosts to complete their life cycle. Trematodes that cause swimmer’s itch, utilize freshwater snails as intermediate hosts and usually waterfowl as definitive hosts. They have several life cycle stages and are found in freshwater ecosystems.