| helminths of the canadian toad, bufo hemiophrys (amphibia: anura), from alberta, canada. | forty adult bufo hemiophrys from alberta, canada, were examined for helminths. four species were found: a trematode, gorgoderina simplex, and 3 nematodes, cosmocercoides variabilis, oswaldocruzia pipiens, and rhabdias americanus. rhabdias americanus had the highest prevalence of helminths (73%); c. variabilis had the highest mean intensity (26+/-33 sd). bufo hemiophrys represents a new host record for each species of helminth. | 1998 | 9645867 |