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MORPHOLOGICAL FEATURES OF TRYPANOSOMES FROM SQUIRREL MONKEYS FROM THE BRAZILIAN AMAZON
Trypanosoma saimirii
Trypanosoma minasense
Medidas de trypanossomos
Primatas neotropicais
Xenosdiagnótico
Trypanosoma saimirii
Trypanosoma minasense
Trypanosomes measurements
Trypanosomatid flagellates
Neotropical primates-culture
Xenodiagnosis
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Transmissores de Hematozoários. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Transmissores de Hematozoários. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Transmissores de Hematozoários. Rio de Janeiro, RJ, Brasil.
Abstract
A morphometric analysis of blood trypomastigotes identified as Trypanosoma minasense, T. saimirii, and T. rangeli harbored by squirrel monkeys from the Brazilian Amazon was performed. Additionally, morphological and biological comparative analyses were conducted of T. saimirii-like and T. rangeli development forms from haemoculture and xenodiagnosis. Illustrations are given of blood trypomastigotes as well as of developing flagellates in triatomine and axenic culture. Mean values of blood trypomastigotes of T. saimirii differ statistically from those of T. rangeli in only two out of ten morphological characters measured, and ranges overlapped. The developing forms of T. saimrii-like parasites were essentially identical in both xenodiagnosis and haemoculture to those of T. rangeli. Trypanosomes confirmed as T. rangeli were transmitted to mice by the bites of the great majority of triatomines that fed on T. saimirii-like infected monkeys. We conclude that, based on morphology and on the development in triatomine bugs and haemoculture, T. saimirii should not be considered a distinct species. We therefore propose T. saimirii to be a junior synonym of T. rangeli.
Keywords
Trypanosoma rangelTrypanosoma saimirii
Trypanosoma minasense
Medidas de trypanossomos
Primatas neotropicais
Xenosdiagnótico
Keywords in Spanish
Trypanosoma rangelTrypanosoma saimirii
Trypanosoma minasense
Trypanosomes measurements
Trypanosomatid flagellates
Neotropical primates-culture
Xenodiagnosis
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