TRYPANOSOMA SPP. INFECTION IN WHITE-LIPPED PECCARIES (TAYASSU PECARI) FROM CERRADO BIOME, MIDWESTERN BRAZIL

Nicolas Jalowitzki de Lima; Beatriz Silva Gonzaga; Raphaela Bueno Mendes Bittencourt; Ennya Rafaella Neves Cardoso; mariana camili da silva; Mariana Avelar Tavares; Rodrigo Araújo Camêlo; Raphael Ribeiro Francisco; Gonzalo Barquero; Felipe da Silva Krawczak

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Trabalho

Título do Trabalho

TRYPANOSOMA SPP. INFECTION IN WHITE-LIPPED PECCARIES (TAYASSU PECARI) FROM CERRADO BIOME, MIDWESTERN BRAZIL

Autores

Nicolas Jalowitzki de Lima
Beatriz Silva Gonzaga
Raphaela Bueno Mendes Bittencourt
Ennya Rafaella Neves Cardoso
mariana camili da silva
Mariana Avelar Tavares
Rodrigo Araújo Camêlo
Raphael Ribeiro Francisco
Gonzalo Barquero
Felipe da Silva Krawczak

Modalidade

Resumo

Área temática

Protozoologia e patógenos transmitidos por vetores

Data de Publicação

24/09/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/23-congresso-brasileiro-de-parasitologia-veterinaria-673729/1547749-trypanosoma-spp-infection-in-white-lipped-peccaries-(tayassu-pecari)-from-cerrado-biome-midwestern-brazil

ISBN

978-65-272-2733-5

Palavras-Chave

qPCR; 5.8S rRNA; molecular surveillance; pathogen detection; hemoparasites.

Resumo

Trypanosomiases are diseases caused by protozoa of the genus Trypanosoma (family Trypanosomatidae), with high relevance to animal and human health due to their broad ecological plasticity and ability to infect multiple hosts. In Brazil, the most relevant species include Trypanosoma cruzi, the etiological agent of Chagas disease, as well as Trypanosoma evansi and Trypanosoma vivax, which infect wild and domestic animals. From an epidemiological perspective, these infections are strongly associated with environments where wildlife, domestic animals, and humans interact, favoring the maintenance of enzootic cycles and spillover events. Previous studies have reported the presence of Trypanosoma spp. in cardiac tissues of wild boars (Sus scrofa), as well as molecular and serological detection in tayassuids (Dicotyles tajacu and Tayassu pecari), suggesting that these mammals may act as potential reservoir hosts. In this context, this study aimed to evaluate the prevalence of trypanosomatids in a natural population of T. pecari from natural and rural areas surrounding Emas National Park, using the 5.8S rRNA region (~83 bp) of the genus Trypanosoma as the molecular target. Sampling was performed at two time points: in 2025, involving animals introduced into captivity until 2022, and in 2026, involving animals introduced between 2025 and 2026. Animal capture and handling were conducted in partnership with the Tropical Sustainability Institute (TSI) as part of a population management program for T. pecari. Whole blood samples were collected in EDTA tubes and stored at -20°C until processing. DNA extraction was performed using an adapted manual magnetic bead protocol, and molecular analyses were carried out by qPCR using a hydrolysis probe system. Results were analyzed for confidence intervals and associations with sex, age group (young or adult), and animal origin (captive-born or wild-born). Additionally, blood smears were prepared from one qPCR-positive animal. Of the 608 samples analyzed (427 from animals introduced until 2022 and 181 from animals introduced between 2025 and 2026), 19 tested positive for Trypanosoma spp., corresponding to a prevalence of 3.1% (95% CI: 1.9–4.8%). No association was observed between positivity, sex, or age. However, positivity was detected exclusively in animals introduced between 2025 and 2026 that were not born in captivity. The presence of Trypanosoma spp. was also morphologically confirmed in the blood smear. These findings suggest that T. pecari may be infected to Trypanosoma agents in natural areas and may potentially contribute to the maintenance of enzootic cycles.

Título do Evento: 23º Congresso Brasileiro de Parasitologia Veterinária
Cidade do Evento: Belo Horizonte
Título dos Anais do Evento: Anais do XXIII Congresso Brasileiro de Parasitologia Veterinária
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

LIMA, Nicolas Jalowitzki de et al.. TRYPANOSOMA SPP. INFECTION IN WHITE-LIPPED PECCARIES (TAYASSU PECARI) FROM CERRADO BIOME, MIDWESTERN BRAZIL.. In: Anais do XXIII Congresso Brasileiro de Parasitologia Veterinária. Anais...Belo Horizonte(MG) Centro de Atividades Didáticas I (CAD 1) da Universidade Federal de Minas Gerais (UFMG), 2026. Disponível em: https//www.even3.com.br/anais/23-congresso-brasileiro-de-parasitologia-veterinaria-673729/1547749-TRYPANOSOMA-SPP-INFECTION-IN-WHITE-LIPPED-PECCARIES-(TAYASSU-PECARI)-FROM-CERRADO-BIOME-MIDWESTERN-BRAZIL. Acesso em: 16/10/2026