Volume 27, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



() species isolated from bats (Microchiroptera) in Europe and Latin America were examined by determining the buoyant densities of their nuclear and kinetoplastic deoxyribonucleic acid (DNA) and the electrophoretic patterns of six isoenzymes. By these criteria they were separated into three distinct groups—two from Europe ( and ) and one from America. was also separable by its morphology in vitro. Geographical location and DNA buoyant densities suggested that the American stocks were more closely related to than to the European species, though they differed from it marginally in kinetoplastic DNA density and in being non-infective to mice. Similar stocks studied by other workers have been shown to differ from also in reduced infectivity to, and lack of natural association with, Triatominae, and in antigenic composition. It is therefore proposed that trypanosomes of the subgenus occurring naturally in Microchiroptera and differing from sensu stricto as outlined above should be treated as a distinct subspecies, ssp. nov. sensu stricto thus becomes the nominate subspecies Chagas 1909.


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