Nov 1, 1975

Comparative studies of Trypanosoma vespertilionis Battaglia and Trypanosoma dionisii Bettencourt & França

The Journal of protozoology
C A Soria, D G Dusanic


In diphasic blood agar media Trypanosoma vespertilionis developed spheroid clusters as compared to rather long, sausage-shaped (sometimes branched) clusters formed by Trypanosoma dionisii. The former species attained a greater population density (approximately 6 X 10(7) organisms/ml) than the latter (approximately 2 X 10(7) organisms/ml). Greater numbers of epimastigotes, some in active binary divisions, were observed during the logarithmic phase of growth, and morphologic changes occurred during cultivation which correlated with increased acidity and a depletion of glucose. Maximum numbers of trypomastigote forms were found during the stationary and early death phases. Most of the forms observed after 20 days were sphaeromastigotes. Glucose concentrations decreased to 0 M in T. vespertilionis and to 4.4 X 10(-5) M in T. dionisii cultures during the stationary and death phases. By the 12th day of incubation cultures of T. vespertilionis were more acid (pH 5.5) than those of T. dionisii vespertilionis and T. dionisii contained common and specific antigens. At least 2-3 common antigens were detected in extracts reacted against heterologous antisera. Specific antigens were observed as nonidentical lines formed by extracts reacted ...Continue Reading

  • References13
  • Citations2


  • References13
  • Citations2

Mentioned in this Paper

Immune Sera
Glucose, (beta-D)-Isomer
Specific antigen
Trypanosoma vespertilionis
Antigens, Heterophile
Trypanosoma dionisii

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