Gonçalves Francielma Chaves Sousa, Cardoso Alana Dos Santos, Simas Ana Karoline Sousa Mendes, Silva Débora Ellen Pinheiro, Carvalho Clauberth César Alves, Melo Davi Viegas, Costa Andréa Pereira da, Nogueira Rita de Maria Seabra, Martins Thiago Fernandes, Labruna Marcelo Bahia, Costa Francisco Borges
Laboratório de Parasitologia e Doenças Parasitárias, Departamento de Patologia, Universidade Estadual do Maranhão - UEMA, São Luís, MA, Brasil.
Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil.
Rev Bras Parasitol Vet. 2025 Jun 2;34(3):e003425. doi: 10.1590/S1984-29612025028. eCollection 2025.
Research into ticks that feed on small mammals is important because they can be vectors of pathogenic bioagents that infect animals and humans. In this study, small mammals were captured in the Maracanã Environmental Protection Area, in the eastern Amazon biome (São Luís, Maranhão), and were visually inspected to detect the presence of ectoparasites. Overall, 10 (48%) out of 21 small mammals were infested by ticks, as follows: three Didelphis marsupialis (30 Amblyomma sp. larvae, and 2 Ixodes sp. nymphs); three Monodelphis domestica (three Ixodes sp. nymphs) and four Dasyprocta sp. rodents (three Amblyomma sp. larvae, three Ixodes sp. nymphs and 16 Ixodes sp. larvae), making a total of 57 tick specimens. Two of the collected nymphs were molecularly identified as Ixodes bocatorensis, based on mitochondrial 16S rRNA gene partial sequences. Since all eight Ixodes sp. nymphs collected in this study presented the same morphotype, the molecular identification of two specimens as I. bocatorensis supports the identification of all collected nymphs as belonging to this same tick species. This study provides host records for immature stages of I. bocatorensis for the first time. Additionally, a brief morphological description of the I. bocatorensis nymph is provided.
对以小型哺乳动物为食的蜱虫进行研究很重要，因为它们可能是感染动物和人类的致病生物制剂的传播媒介。在本研究中，小型哺乳动物在亚马逊生物群落东部（圣路易斯，马拉尼昂）的马拉卡纳环境保护区捕获，并进行目视检查以检测体表寄生虫的存在。总体而言，21只小型哺乳动物中有10只（48%）被蜱虫感染，情况如下：三只食蟹狐（30只钝缘蜱幼虫和2只硬蜱若虫）；三只家短尾负鼠（三只硬蜱若虫）和四只稻鼠属啮齿动物（三只钝缘蜱幼虫、三只硬蜱若虫和16只硬蜱幼虫），总共57个蜱虫标本。根据线粒体16S rRNA基因部分序列，所收集的两只若虫经分子鉴定为博卡托硬蜱。由于本研究中收集的所有八只硬蜱若虫呈现相同的形态类型，将两个标本鉴定为博卡托硬蜱支持将所有收集的若虫鉴定为属于同一蜱种。本研究首次提供了博卡托硬蜱未成熟阶段的宿主记录。此外，还提供了博卡托硬蜱若虫的简要形态描述。
