ECTOPARASITE DIVERSITY AND MOLECULAR DETECTION OF RICKETTSIA BELLII IN AMBLYOMMA OVALE FROM WILD SMALL MAMMALS IN SANTA CATARINA, BRAZIL

Thayná Fiorentin Moreira; Thiago Fernandes Martins; Amanda Martins Ungri; Lina de Campos Binder; Anderson Barbosa de Moura; Marcelo Bahia Labruna; Andreas Lazaros Chryssafidis

Título do Trabalho

Autores

Thayná Fiorentin Moreira
Thiago Fernandes Martins
Amanda Martins Ungri
Lina de Campos Binder
Anderson Barbosa de Moura
Marcelo Bahia Labruna
Andreas Lazaros Chryssafidis

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-673729/1537166-ectoparasite-diversity-and-molecular-detection-of-rickettsia-bellii-in-amblyomma-ovale-from-wild-small-mammals-i

ISBN

978-65-272-2733-5

Palavras-Chave

Rickettsiae; gltA; wildlife surveillance; hydroelectric power plant; vector-borne bacteria.

Resumo

Wild small mammals play a key role in maintaining ectoparasites and microorganisms of medical relevance. This study investigated the ectoparasite community and the occurrence of Rickettsia in hosts captured around the “Quebra-Queixo” Hydroelectric Power Plant, western Santa Catarina, Brazil. Between November 2023 and February 2024, 19 animals were captured, including 17 rodents (Rodentia: Cricetidae), one white-eared opossum (Didelphis albiventris), and one yellow-sided opossum (Monodelphis dimidiata). A diverse community of 51 ectoparasites was collected from nine individuals. The identified taxa comprised Laelapidae mites on rodents, Leptopsylla segnis fleas on M. dimidiata, nymphs of Amblyomma ovale and Ixodes loricatus on rodents, and immature stages plus one adult female of Amblyomma dubitatum collected from the environment. Blood and ectoparasite samples were screened by real-time polymerase chain reaction (PCR), and one A. ovale nymph was confirmed positive for Rickettsia bellii by species-specific protocols. While serological reactivity to R. bellii antigen has been reported in Santa Catarina, molecular evidence of R. bellii in A. ovale had not been documented in the state; here we provide the first molecular record, underscoring the need for integrated One Health surveillance strategies targeting ectoparasites and vector-borne pathogens in human-modified landscapes.

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

MOREIRA, Thayná Fiorentin et al.. ECTOPARASITE DIVERSITY AND MOLECULAR DETECTION OF RICKETTSIA BELLII IN AMBLYOMMA OVALE FROM WILD SMALL MAMMALS IN SANTA CATARINA, 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-673729/1537166-ECTOPARASITE-DIVERSITY-AND-MOLECULAR-DETECTION-OF-RICKETTSIA-BELLII-IN-AMBLYOMMA-OVALE-FROM-WILD-SMALL-MAMMALS-I. Acesso em: 13/10/2026