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Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.86 no.1 Rio de Janeiro Jan./Mar. 1991 

Trypanosoma rangeli (Tejera, 1920) isolated from a sylvatic rodent (Echimys dasythrix) in Santa Catarina island, Santa Catarina state: first report of this trypanosome in southern Brazil

M. Steindel1 

J. C. Carvalho Pinto1 

H. K. Toma1 

R. H. R. Mangia2 

R. Ribeiro-Rodrigues3 

A. J. Romanha3 

Universidade Federal de Santa Catarina, Departamento de Microbiologia e Parasitologia, Florianópolis, Brasil

Instituto Oswaldo Cruz, Departaemnto de Protozoologia, Rio de Janeiro, Brasil

Centro de Pesquisas René Rachou, Laboratório de Imunologia e Biologia Molecular, Belo Horizonte, Brasil


A trypanosome strain isolated from a sylvatic rodent (Echimys dasythrix) from Santa Catarina Island (Santa Catarina State, Brazil) was characterized by the following methods: experimental transmission and development in invertebrate hosts, morphometry, cross protection, complement sensitivity, lectin agglutination and isoenzyme profiles. Comparasions were made with standard Trypanosoma cruzi and T. rangeli strains. All methods except isoenzyne analysis led to the identification of the isolate as T. rangeli. The isoenzyme differences found could be explained on the basis of polymorphism. Therefore this is the first report of T. rangeli in southern Brazil, increasing the geographical distribution of this parasite.


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