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Trypanosoma evansi in capybara from Venezuela

J F Arias¹, F García, M Rivera

¹Programa de Producción Agrícola Animal, Universidad Nacional Experimental de los Llanos Occidentales Ezequiel Zamora. Guanare, Estado Portuguesa, Venezuela.

Journal of Wildlife Diseases

|April 1, 1997

Summary

Capybaras in Venezuela were tested for Trypanosoma evansi, a parasite. The study found 9% of capybaras infected and 50% with antibodies, suggesting their role in parasite spread.

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Area of Science:

Veterinary Parasitology
Wildlife Epidemiology
Zoonotic Diseases

Background:

Trypanosoma evansi is a protozoan parasite known to affect various animal species.
Capybaras (Hydrochoerus hydrochaeris) are the world's largest rodents and inhabit diverse ecosystems in South America.
Understanding the role of wildlife reservoirs is crucial for controlling parasitic diseases.

Purpose of the Study:

To investigate the prevalence of Trypanosoma evansi in capybaras during the slaughtering season.
To assess the potential role of capybaras in the epizootiology of T. evansi in Venezuela.

Main Methods:

Blood and serum samples were collected from 559 capybaras in El Frio and El Cedral ranches, Venezuela.
The microcentrifugation technique was used to detect T. evansi in blood samples.

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The immunofluorescence test was employed to detect antibodies against T. evansi in serum samples.

Main Results:

Trypanosoma evansi was detected in 48 (9%) of the 559 capybaras.
Antibodies against T. evansi were found in 279 (50%) of the capybaras.
Infection and antibody prevalence were observed in both study ranches.

Conclusions:

Capybaras can be infected with Trypanosoma evansi.
The high prevalence of antibodies suggests significant exposure to the parasite.
Capybaras may play a role as a reservoir or vector in the epizootiology of T. evansi in enzootic areas of Venezuela.