This study reports on infection by Trypanoxyuris (Trypanoxyuris) minutus among Alouatta guariba clamitans through biometry on adults and eggs. A total of 58 adult helminths were recovered from the small segment of the animal's large intestine. This study is the first report of this parasite among A. guariba clamitans in Rio de Janeiro.
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High infection prevalences by Trypanosoma minasense in non-human primates from the Southeast region of Brazil.
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Laboratório de Biologia de Tripanosomatídeos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.
Article Synopsis
- Non-human primates (NHPs) in Brazil were studied to investigate the infection rates of Trypanosoma minasense, with a focus on how landscape composition and forest fragmentation affected these rates.
- Sapajus nigritus showed the highest positivity for T. minasense in blood samples (60.9%), while other species like Callithrix spp. and Alouatta guariba clamitans had lower rates, but molecular analysis indicated significant infections in all groups.
- The study found a correlation between T. minasense infections and environmental factors: higher forest fragmentation led to increased infection rates in NHPs, suggesting that habitat loss may drive disease prevalence.
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Diagnostic and Environmental Pathology Laboratory. Department of Pathology, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil.
Background: Oral focal epithelial hyperplasia (FEH) is an uncommon infection affecting humans, chimpanzees, bonobos, and howler monkeys. This study describes 10 cases of free-ranging brown howler monkeys (Alouatta guariba clamitans) diagnosed with FEH and Alouatta guariba Papillomavirus 1 (AgPV 1).
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