We herein describe zebuine cattle tick infestation in a farm in southeast Brazil with an examination accurate enough to detect tick immatures and species other than R. microplus. Cattle were inspected monthly for ticks from May 2015 to May 2017 and 7604 ticks were collected along 276 bovine inspections. Rhipicephalus microplus was the dominant species (7197 specimens, 94.5% from the total), but Amblyomma sculptum was also collected (407/5.5%). Horse tick infestations were evaluated for comparison purposes of A. sculptum infestations of a primary host sharing pastures with bovines. Ticks were counted on the left side of 4–12 horses every 3 months from October 2015 to October 2017. Overall, 68 horse inspections were performed and 1702 ticks were collected: Dermacentor nitens (805 specimens/47.3% of the total), A. sculptum (733/43.1%) and R. microplus (164/9.6%). Overall mean tick abundance on bovines was low if compared to that of taurine cattle and counting revealed four annual generations of R. microplus. The interval between infestation peaks was 3 months, irrespective of the season, and an increase in tick counts from spring onward, as described in the south of Brazil, was not seen. Amblyomma sculptum infestation abundance was minor but constant and in high prevalence. Cattle infestation with A. sculptum seems to depend on pasture sharing with other domestic and wild hosts that are its primary hosts and provide engorged females to complete their life cycle. The impact of such tick sharing among several host species on tick-borne pathogen transmission remains to be elucidated.

我们在本文中描述了巴西东南部一个农场的 zebuine 牛蜱虫感染，其检查准确到足以检测除R. microplus之外的未成熟蜱虫和物种。从 2015 年 5 月到 2017 年 5 月，每月对牛进行蜱虫检查，在 276 次牛检查中收集了 7604 只蜱。Rhipicephalus microplus是优势种（7197 个标本，占总数的 94.5%），但也收集了Amblyomma sculptum（407/5.5%）。为了比较A. sculptum 的目的，对马蜱侵染进行了评估与牛共享牧场的主要宿主的侵染。从 2015 年 10 月到 2017 年 10 月，每 3 个月对 4-12 匹马左侧的蜱进行计数。总共进行了 68 次马检查并收集了 1702 条蜱：Dermacentor nitens（805 个标本/总数的 47.3%），A.雕刻(733/43.1%) 和R. microplus (164/9.6%)。如果与牛磺酸相比，牛的总体平均蜱丰度较低，并且计数显示每年四代R. microplus。与季节无关，侵染高峰之间的间隔为 3 个月，从春季开始，没有看到蜱数增加，如巴西南部所描述的那样。小扁豆侵染丰度虽小，但始终如一，而且流行率很高。牛感染A. sculptum似乎依赖于与其他家养和野生宿主共享牧场，这些宿主是其主要宿主，并为饱食的雌性提供完整的生命周期。几种宿主物种之间的这种蜱共享对蜱传病原体传播的影响仍有待阐明。