New Records of Ixodes affinis (Acari: Ixodidae) Parasitizing Avian Hosts in Southeastern Virginia
New Records of Ixodes affinis (Acari: Ixodidae) Parasitizing Avian Hosts in Southeastern Virginia
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DOI：
10.1093/jme/tjv175
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发表时间：
2016-03-01
影响因子：
2.1
通讯作者：
Walters, Eric L.
中科院分区：
文献类型：
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作者：
Heller, Erin L.;Wright, Chelsea L.;Walters, Eric L.
Ixodes affinis Neumann（螨虫：Ixodidae）是一种身体坚硬的蜱虫，分布在美国东南部的大部分地区。尽管亲缘疏螺旋体不寄生于人类，但它是严格伯氏疏螺旋体（莱姆病的病原体）的有效载体，因此有助于该病原体的地方性维持。这项研究提供了 I. affinis 寄生五种新宿主雀形目鸟类的证据。 2012-2014年期间，捕获了1,888只鸟并检查了蜱虫，并从12只鸟中采集了18只未成熟的I. affinis，其中包括6只卡罗莱纳鹪鹩（Thyrothorus ludovicianus）；两只棕色鸫鸫（Toxostoma rufum）；以及一只美洲知更鸟 (Turdus migratorius)、东部红雀 (Pipilo erythrophamus)、北方红雀 (Cardinalis cardinalis) 和白喉麻雀 (Zonotrichia albicollis)。在收集的 15 只幼虫和 3 只若虫中，1 只若虫的伯氏疏螺旋体 DNA 检测呈阳性。发现 I. affinis 与未成熟的美洲钝蜱 (Amblyomma americanum (L.))、棕色硬蜱 (Ixodes brunneus Koch)、齿硬蜱 (Ixodes dentatus Marx)、肩胛硬蜱 (Ixodes scapularis Say) 和血蜱 (Haemaphysalis leporispalustris Packard) 共同捕食鸟类。这项研究的结果有助于更好地了解近缘蜱宿主，并确定可能在该蜱种的维持和传播中发挥作用的鸟类类群。
Ixodes affinis Neumann (Acari: Ixodidae) is a hard-bodied tick species distributed throughout much of the southeastern United States. Although I. affinis does not parasitize humans, it is a competent vector of Borrelia burgdorferi sensu stricto, the causative-agent of Lyme disease, and thus contributes to the enzootic maintenance of this pathogen. This study presents evidence of I. affinis parasitizing five new host passerine species. During 2012-2014, 1,888 birds were captured and examined for ticks, and 18 immature I. affinis were collected from 12 birds-six Carolina Wrens (Thyrothorus ludovicianus); two Brown Thrashers (Toxostoma rufum); and one American Robin (Turdus migratorius), Eastern Towhee (Pipilo erythrophthalmus), Northern Cardinal (Cardinalis cardinalis), and White-throated Sparrow (Zonotrichia albicollis). Of 15 larvae and 3 nymphs collected, one nymph tested positive for B. burgdorferi DNA. I. affinis was found co-feeding on birds with immature Amblyomma americanum (L.), Ixodes brunneus Koch, Ixodes dentatus Marx, Ixodes scapularis Say, and Haemaphysalis leporispalustris Packard. The results of this research provide a better understanding of I. affinis hosts and identify avian taxa that may play a role in the maintenance and dispersal of this tick species.