01840naa a2200229 a 450000100080000000500110000800800410001910000190006024501210007926000090020052011680020965000130137765000230139065000140141365300320142765300300145965300170148965300150150670000190152170000180154077300520155818036372017-03-31       2000    bl ---       0--  u    #d1 aQUEIROZ, A. O.  aBiological and biochemical characterization of isolates of Trypanosoma evansi from Pantanal of Mato Grosso - Brazil.  c2000  aTen isolates of Trypanosoma evansi from the Pantanal region of Brazil, recently derived from coati (Nasua nasua, carnivora, Procyonidae), horses and dogs, were characterized on the basis of biological (experimental infections in Wistar rats) and biochemical (multicolus enzyme eletrophoresis) data. Biological data were analyzed by Nested analysis of variance and Krustal-Wallis. Marked heterogeneity in virulence was observed in the isolates. Some of the isolates showed an undulating parasitaemia, typical for African trypanosomes. This biological heterogeneity did not correspond with the biochemical homogeneity observed the T. evansi isolates. T. evansi has one of the widest distribution and greaters range of mammalian hosts and is widely regognized to have evolved from Trypanosoma brucei. Adaptability of T. evansi was reflected in the variability of biochemical and molecular parameters to date. The variability in virulence was very significant, but not correlated with the host from which was derived. These data suggested that, in the region studied, T. evansi is transmitted among both domestic and sylvatic animals in one single transmission cycle.  aPantanal  aTrypanosoma evansi  avirulence  aBiochemical characteristics  aCaracteristica bioquimica  aParasitaemia  aVirulencia1 aCABELLO, P. H.1 aJANSEN, A. M.  tVeterinary Parasitologygv.92, p.107-118, 2000.