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Trypanosoma evansi isolated from capybara (Hidrochaeris hidrochaeris)
Memorias Do Instituto Oswaldo Cruz
|October 31, 2001
Summary
Researchers identified Trypanosoma evansi in captive Peruvian Amazon capybaras. Morphological analysis confirmed the presence of this parasite in 14% of the animals studied.
Area of Science:
- Veterinary Parasitology
- Amazonian Wildlife Research
- Protozoan Biology
Background:
- Capybaras in captivity can be susceptible to parasitic infections.
- Trypanosoma species are known pathogens affecting various mammals.
- Understanding parasite prevalence in Amazonian wildlife is crucial for conservation and public health.
Purpose of the Study:
- To characterize the morphological and biometric features of Trypanosoma isolates from captive capybaras.
- To identify the specific Trypanosoma species infecting these animals.
- To determine the prevalence of Trypanosoma in a captive capybara population in the Peruvian Amazon.
Main Methods:
- Blood samples were collected from 50 captive capybaras.
- Parasite detection utilized microhaematocrit, wide drop, and Giemsa-stain microscopy.
- Identification of Trypanosoma evansi was based on distinct morphological characteristics, including kinetoplast position, undulating membrane development, and flagellum length.
Main Results:
- Trypanosoma was detected in 14 out of 50 (28%) capybara blood samples.
- All positive samples were identified as Trypanosoma evansi.
- Key morphological features confirmed the T. evansi identification in all positive cases.
Conclusions:
- Trypanosoma evansi is present in captive capybaras in the Peruvian Amazon.
- Morphological identification is a reliable method for diagnosing T. evansi in this host.
- Findings highlight the importance of monitoring parasitic infections in captive wildlife populations.