Araújo Bruno Vinicios Silva de, Carmo Larissa Daniele Aires Oliveira do, Amora Sthenia Santos Albano, Antunes João Marcelo Azevedo de Paula, Souza Francisco de Assis Leite, Marinho Paulo Henrique Dantas, Braga Juliana Fortes Vilarinho
Programa de Pós-graduação em Biociência Animal, Universidade Federal Rural de Pernambuco - UFRPE, Recife, PE, Brasil.
Médica Veterinária, Mossoró, RN, Brasil.
Rev Bras Parasitol Vet. 2025 Jun 30;34(2):e000925. doi: 10.1590/S1984-29612025037. eCollection 2025.
Although previous studies have identified Ehrlichia canis, Anaplasma platys, Babesia vogeli, and Hepatozoon canis in dogs in Northeastern Brazil, research on their presence within and around environmental conservation units remains scarce. The present study investigated the presence of tick-borne pathogens in domestic dogs in the rural region of Baraúna, within the buffer zone of the Furna Feia National Park (FFNP), an environmental conservation unit in the Caatinga biome of Rio Grande do Norte, northeastern Brazil. Blood samples from 52 dogs were collected to detect the presence of A. platys (16S rRNA), B. vogeli (18S rRNA), E. canis (16S rRNA), and H. canis (18S rRNA) DNA by Polymerase Chain Reaction (PCR). More than 90% of dogs were found to be infected with at least one pathogen, predominantly E. canis and H. canis. Co-infections (38.5%) and multi-infections with three (19.2%) and four (5.8%) pathogens were also frequent and diverse, underscoring the complexity of tick-borne diseases in this region. These findings highlight the epidemiological importance of dog-associated pathogens, and raise concerns regarding their potential transmission to wildlife within the conservation unit, as some of these pathogens have been previously described in wild mammalian species inhabiting the FFNP, including endangered species.
尽管先前的研究已在巴西东北部的犬类中发现了犬埃立克体、血小板无浆体、伯氏巴贝斯虫和犬肝簇虫，但关于它们在环境保护单位内部及周边地区的存在情况的研究仍然很少。本研究调查了位于巴西东北部北里奥格兰德州卡廷加生物群落的富尔纳费亚国家公园（FFNP）缓冲区巴拉乌纳农村地区家犬体内蜱传病原体的存在情况。采集了52只犬的血液样本，通过聚合酶链反应（PCR）检测血小板无浆体（16S rRNA）、伯氏巴贝斯虫（18S rRNA）、犬埃立克体（16S rRNA）和犬肝簇虫（18S rRNA）DNA的存在情况。发现超过90%的犬感染了至少一种病原体，主要是犬埃立克体和犬肝簇虫。共感染（38.5%）以及三种（19.2%）和四种（5.8%）病原体的多重感染也很常见且多样，凸显了该地区蜱传疾病的复杂性。这些发现突出了与犬相关的病原体在流行病学上的重要性，并引发了对它们可能传播给保护区内野生动物的担忧，因为其中一些病原体此前已在栖息于FFNP的野生哺乳动物物种中被发现，包括濒危物种。
