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首页> 外文期刊>Journal of Medical Entomology >Evaluation of Squirrels (Rodentia: Sciuridae) as Ecologically Significant Hosts for Anaplasma phagocytophilum in California
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Evaluation of Squirrels (Rodentia: Sciuridae) as Ecologically Significant Hosts for Anaplasma phagocytophilum in California

机译：评估松鼠（啮齿类：Scuidirae）在加利福尼亚吞噬细胞无浆膜的重要生态寄主

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摘要

Granulocytic anaplasmosis (GA), caused by Anaplasma phagocytophilum, is a potentially fatal, emerging rickettsial disease of humans, domestic animals, and wildlife. The purpose of this study was to determine whether sciurids from multiple areas of northern California were infested with ticks or exposed to or infected with A. phagocytophilum using polymerase chain reaction (PCR) and indirect-fluorescent antibody (IFA) serology. Sciurids of nine different tree- and ground-dwelling species were assessed: arboreal squirrels (western and eastern gray squirrels, Sciurus griseus and S. carolinensis, and Douglas squirrels, Tamiasciurus douglasii) but not northern flying squirrels (Glaucomys sabrinus) had greater evidence of exposure and current infection than did semiarboreal or ground dwelling sciurids (California ground squirrels, Spermophilus beecheyi, and chipmunks, Tamias spp.). Western gray squirrels had the most extensive exposure (70.7% seroprevalence and 12.1% PCR prevalence). Positive squirrels were identified in all regions where squirrels were collected. A logistic regression identified being a western gray squirrel (OR = 20.5, P = 2.95 x 10-8) and from the north coastal region of California (OR = 9.052, P = 1.41 x 10-6) as having the highest risk of exposure to A. phagocytophilum. Five of nine sciurid species had evidence of infestation with Ixodes pacificus or I. spinipalpis that could vector A. phagocytophilum. Extensive exposure from multiple areas suggests sciurids may be important in the maintenance of GA in California and indicates that studies of reservoir competence of these species are warranted.
机译：由吞噬性无浆膜炎引起的粒细胞无力症（GA）是一种可能致命的，正在出现的人类，家畜和野生动植物的立克次氏病。这项研究的目的是使用聚合酶链反应（PCR）和间接荧光抗体（IFA）血清学方法来确定来自加利福尼亚北部多个地区的孢子虫是否被tick虫感染或暴露于噬菌体或被其感染。评估了9种不同的树栖和地面栖居物种的鞘翅目：树栖松鼠（西部和东部的灰松鼠，灰松鼠和卡罗来纳松鼠，以及道格拉斯松鼠，Tamigasciurus douglasii），而北部飞鼠（Glaucomys sabrinus）没有更多的证据暴露和目前的感染情况比半乔木或陆栖小孢子虫（加利福尼亚地松鼠，Spermophilus beecheyi和花栗鼠，Tamias spp。）要高。西部灰松鼠的接触最广泛（血清流行率为70.7％，PCR流行率为12.1％）。在所有收集松鼠的地区都鉴定出阳性松鼠。 Logistic回归确定为西部灰松鼠（OR = 20.5，P = 2.95 x 10-8）和来自加利福尼亚北部沿海地区（OR = 9.052，P = 1.41 x 10-6）具有最高暴露风险到A. phagocytophilum。九个孢子虫物种中的五个有证据证明可感染嗜食性曲霉的太平洋硬x或尖刺I. spinipalpis。来自多个地区的大量暴露表明，孢子虫可能对加利福尼亚州GA的维护很重要，并表明对这些物种的储层能力进行研究是有必要的。

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