Aguirre André de Abreu Rangel, Rodrigues Vinícius da Silva, Costa Ivaneide Nunes da, Garcia Marcos Valério, Csordas Bárbara Guimarães, Andreotti Renato, Medeiros Jansen Fernandes
Fiocruz Rondônia, Fundação Oswaldo Cruz, Porto Velho, RO, Brasil.
Programa de Pós-graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil.
Rev Bras Parasitol Vet. 2019 Jul 18;28(3):473-478. doi: 10.1590/S1984-29612019048.
Amblyomma scalpturatum is a tick species that is unique to South America. It is commonly associated with the Amazon biome and has been reported in some Brazilian states. This tick species exhibits host specificity: it parasitizes tapirs and suidae. Its role in transmitting pathogens to humans is still unknown. Amblyomma scalpturatum is known to be a human-biting tick; however, there is only one report showing that humans make suitable hosts for this species. The knowledge of tick fauna is lacking in the Acre State. This study collected free-living ticks with the aim of finding new records in Acre State. Collections were carried out in Amazon forest fragments in Rio Branco municipality. An A. scalpturatum specimen was identified and submitted sequencing of the ITS-2 gene. This study presents the first molecular confirmation of A. scalpturatum collected in situ in Acre State, North Region, Brazil. This study also presents the first record of a successfully completed feeding by an A. scalpturatum nymph on a human host in the North region of Brazil. Further investigation is needed to ascertain the complete life cycle of this tick species, its seasonality in the environment, and its relationship to pathogens and competence to transmit them.
刻点花蜱是南美洲特有的一种蜱虫。它通常与亚马逊生物群落相关联，在巴西的一些州有过报道。这种蜱虫表现出宿主特异性：它寄生于貘和猪科动物。其向人类传播病原体的作用仍不明确。已知刻点花蜱会叮咬人类；然而，仅有一份报告表明人类是该物种的适宜宿主。阿克里州缺乏蜱类动物的相关知识。本研究采集自由生活的蜱虫，旨在在阿克里州发现新的记录。采集工作在里奥布兰科市的亚马逊森林碎片中进行。鉴定出一只刻点花蜱标本，并对其ITS - 2基因进行了测序。本研究首次对在巴西北部地区阿克里州原位采集的刻点花蜱进行了分子确认。本研究还首次记录了一只刻点花蜱若虫在巴西北部地区成功吸食人类宿主血液的情况。需要进一步调查以确定这种蜱虫的完整生命周期、其在环境中的季节性以及它与病原体的关系和传播病原体的能力。
