Grupo de Investigación GEBIOME, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10 A.A. 275 Manizales, Caldas, Colombia.
Programa de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Calle 65 No. 26-10 A.A. 275 Manizales, Caldas, Colombia.
Acta Trop. 2021 Jan;213:105733. doi: 10.1016/j.actatropica.2020.105733. Epub 2020 Nov 4.
Several bacteria belonging to the genus Rickettsia are recognized as causal agents of diseases in domestic and wild animals and humans. These bacteria are considered emerging or reemerging and are transmitted by ticks, fleas, and lice vectors. In recent decades, there have been reports of rickettsias in ticks of the genus Amblyomma, Ixodes, and Haemaphysalis collected from wild birds. Accordingly, birds play a plausible role in the transport and spread of ticks infected by Rickettsia spp. In this study, we performed molecular detection of Rickettsia species in ticks collected from wild birds in the department of Caldas, Colombia. We detected and identified Rickettsia amblyommatis, 'Candidatus Rickettsia colombianensi' and a Rickettsia sp. closely related to 'Candidatus Rickettsia tarasevichiae' and Rickettsia canadensis. This study contributes to the knowledge on infection by Rickettsia in ticks collected from wild birds in Colombia. We also provide the first reports of infection by R. amblyommatis in the genus Ixodes collected from wild birds in South America and the presence of Rickettsia at elevations above 3000 m a.s.l.
几种属于立克次体属的细菌被认为是家畜和野生动物以及人类疾病的病原体。这些细菌被认为是新出现或重新出现的，通过蜱、跳蚤和虱子等媒介传播。近几十年来，有报道称在从野生鸟类中采集的硬蜱属、革螨属和恙螨属蜱中发现了立克次体。因此，鸟类在感染立克次体的蜱的运输和传播中发挥了合理的作用。在这项研究中，我们在哥伦比亚卡尔达斯省从野生鸟类中采集的蜱中进行了立克次体种的分子检测。我们检测并鉴定了立氏立克次体、“哥伦比亚候选立克次体”和一种与“候选立克次体 tarasevichiae”和加拿大立克次体密切相关的立克次体。这项研究有助于了解哥伦比亚从野生鸟类中采集的蜱感染立克次体的情况。我们还首次报道了在南美的革螨属蜱中感染立氏立克次体的情况，以及在海拔 3000 米以上地区存在立克次体的情况。
