Abstract
Infection with metacercariae of the digenean Plagiorchis noblei had no effect on the susceptibility of Aedes aegypti larvae to predation by guppies (Poecilia reticulata). In contrast, infected larvae were rendered more susceptible to being taken by meadow voles (Microtus pennsylvanicus) than were uninfected controls. Since voles, which will feed at the edge of water, are capable of supporting the adult fluke, transmission of the parasite to the definitive host may be facilitated.