University of FloridaSolutions for Your Life

Cir 91: Nematode (Roundworm) Infections in Fish

Figure 9. Paratenic host. Fish A contains a larval nematode (L). When Fish A is eaten by Fish B, larval nematode (L) migrates out of Fish A into Fish B's body. Fish B can be considered a paratenic host because it is not required for completion of the nematode life cycle, but can still serve as a host.