Isoenzymes of South American Paragonimus peruvianus and P. ecuadoriensis.

The characterization of adult Paragonimus peruvianus by isoenzyme electrophoresis of four enzymes, a peptidase, alanine aminotransferase, glucosephosphate isomerase and glucose 6-phosphate dehydrogenase revealed a complete identity of all six individuals examined. Electrophoretic patterns of eight Paragonimus ecuadoriensis showed uniformity concerning the same enzymes. Both species compared were monomorphous with respect to three enzymes and could only be separated by the peptidase. The close relationship, already established by morphology, between adults of P. peruvianus is therefore supported.