Studies on trypanosoma rangeli tejera, 1920 x-its comparison with trypanosoma cruzi chagas, 1909. Infection in differents st ages of rhodnius prolixus stal, 1859

  • N. Añez Universidad de Los Andes-Venezuela
  • M. Molero Universidad de Los Andes-Venezuela
  • A. Valderrama Universidad de Los Andes-Venezuela
  • Elsa Nieves Universidad de Los Andes-Venezuela
  • D. Cazorla Universidad de Los Andes-Venezuela
  • M. Castro Universidad de Los Andes-Venezuela
  • V. Márquez Universidad de Los Andes-Venezuela
Palabras clave: trypanosoma rangeli, trypanosoma cruzi, rhodnius prolixus, mixed infection

Resumen

The comparison among specimens of Rhodnius prolixus, at different stages of development, exposed to infections by Trypanosoma rangeli and Trypanosoma cruzi, revealed that the bugs exposed to T. cruzi showed a significant higher susceptibility to infection than that observed in the groups exposed to T. rangeli or to the mixture of both parasites. The similar mortality rate recorded in uninfected and T. cruzi infected bugs confirms that this parasite is harmless to R. prolixus. On the other hand. T. rangeli produces its pathological effect although the bugs ingest a relatively low number of flagellates. suggesting the existen ce of a direct relation between the amount of ingested parasites and the mortality produced. In mixed infection, T. cruzi does not inhibit the harmful effect ofT. rangeli on R. prolixus. The life cyc1e of R. prolixus is not affected by high infection of T. cruzi or low infection by T. range~. However, when bugs ingested a high amount of flagellates ofT. rangeli in mixed infections, the time to reach the adult stage in relation to controls, was significantIy longer. The epidemiological significance of the present results is discussed.

Publicado
1992-09-21
Cómo citar
1.
Añez N, Molero M, Valderrama A, Nieves E, Cazorla D, Castro M, Márquez V. Studies on trypanosoma rangeli tejera, 1920 x-its comparison with trypanosoma cruzi chagas, 1909. Infection in differents st ages of rhodnius prolixus stal, 1859. Kasmera [Internet]. 21 de septiembre de 1992 [citado 7 de abril de 2025];20(1-4):35-1. Disponible en: https://mail.produccioncientificaluz.org/index.php/kasmera/article/view/4550
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