Haemaphysalis longicornis, the Asian longhorned tick, is an invasive ixodid tick that has rapidly spread across the northeastern and southeastern regions of the United States since first reported in 2017. The emergence of H. longicornis presents a potential threat for livestock, wildlife, and human health as the host associations and vector potential of this invasive pest in the United States are poorly understood. Previous field data from the United States has shown that H. longicornis was not associated with natural populations of small mammals or birds, but they show a preference for medium sized mammals in laboratory experiments. Therefore, medium and large sized mammals were sampled on Staten Island, New York to determine H. longicornis host associations and vector potential for a range of human and veterinary pathogens. A total of 97 hosts were sampled and five species of tick (Amblyomma americanum, Dermacentor variabilis, H. longicornis, Ixodes scapularis, Ixodes cookei) were found feeding concurrently on these hosts. Haemaphysalis longicornis was found in the highest proportions compared to other native tick species on raccoons (55.4%), Virginia opossums (28.9%), and white-tailed deer (11.5%). Tissue, blood, and engorged larvae were tested for 17 different pathogens using a nanoscale PCR platform. Infection with five pathogens (Borrelia burgdorferi, Anaplasma phagocytophilum, Rickettsia spp., Mycoplasma haemocanis, and Bartonella spp.) was detected in host samples, but no pathogens were found in any larval samples. These results suggest that although large and medium sized mammals feed large numbers of H. longicornis ticks in the environment there is presently a low potential for H. longicornis to acquire pathogens from these wildlife hosts.

中文翻译：

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在纽约市，侵入性Haemaphysalis longicornis tick与脊椎动物宿主，其他本地native载体和vector传播病原体的关联

长角血蜱，亚洲天牛蜱，是一种侵入性的硬蜱已迅速在美国东北部和东南部地区，因为在2017年的出现，首次报道蔓延长角血蜱礼物家畜，野生动物和人类的潜在威胁在美国，作为寄主协会的健康和这种入侵害虫的媒介潜力还知之甚少。美国以前的现场数据表明，长柄嗜血杆菌与小型哺乳动物或鸟类的自然种群无关，但在实验室实验中它们显示出对中型哺乳动物的偏爱。因此，在纽约州史泰登岛上对中型和大型哺乳动物进行了采样，以确定H. longicornis宿主关联和多种人类和兽医病原体的载体潜力。共采集了97个寄主，并发现了5种of（美洲A，变种，长。，肩I体，库克体）同时觅食。长角血蜱在相对于其他本土蜱物种的浣熊（55.4％），北美负鼠（28.9％），和白尾鹿（11.5％）的比例最高找到。使用纳米PCR平台测试了17种不同病原体的组织，血液和饱食的幼虫。感染了五种病原体（疏螺旋体，在宿主样品中检出了无噬菌性嗜血杆菌，立克次体，嗜血支原体和巴尔通体，但在任何幼虫样品中均未发现病原体。这些结果表明，尽管大中型哺乳动物在环境中喂食大量的H. longicornis s，但目前，H。longicornis从这些野生生物宿主中获取病原体的可能性较低。