Amblyomma sculptum is a common human-biting tick in Brazil, where it plays an important role as a vector of Rickettsia rickettsii, the agent of the Brazilian spotted fever. Herein, we studied the seasonal dynamics of A. sculptum in an urban area of the Cerrado biome in midwestern Brazil, where human rickettsiosis is endemic. Ticks were collected in two sites located within the campus of Federal University of Goiás. The collections were done by dragging, flagging and visual search. In total, 117,685 ticks were collected, including 100,627 Amblyomma spp. larvae, 10,055 nymphs and 6977 adults of A. sculptum, and one nymph and 25 adults of Amblyomma dubitatum. The highest peak of larvae occurred in June 2018 and in July 2019, whereas nymphs peaked in July 2018 and September 2019. Adults reached their highest numbers in March 2018 and November 2019. These data suggest that A. sculptum develops one generation per year in this urban area of the Cerrado biome in midwestern Brazil. Interestingly, the peak of nymphs occurred during the same period of all confirmed cases of rickettsiosis in Goiás, suggesting a possible relationship between the seasonal dynamics of this tick stage and rickettsiosis transmission in this state.

在巴西，Amblyomma sculptum是一种常见的咬人壁虱，它在巴西立克次体病的病原体立克次氏体（Rickettsia rickettsii）的传播媒介中起着重要作用。在本文中，我们研究了巴西中西部塞拉多生物群落市区中的拟南芥的季节性动态，那里的人类立克次体病是地方病。在位于戈亚斯联邦大学校园内的两个地点收集了two虫。收集是通过拖动，标记和视觉搜索完成的。总共117685对蜱进行收集，其中包括100627花蜱属。幼虫，1005只若虫和6977个成虫的成虫，以及1个若虫和25个成虫的盲膜。幼虫的最高峰发生在2018年6月，7月2019年，而若虫2018年7月和九月见顶2019位成年人达到最高人数2018年3月和2019年十一月这些数据表明A. sculptum在该所研制每年一代巴西中西部的塞拉多生物群落市区。有趣的是，若虫的高峰发生在戈亚斯所有确诊的立克次氏菌感染病例的同一时期，这表明此tick虫阶段的季节动态与该状态下的立克次氏菌传播之间可能存在关联。