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首页> 外文期刊>Applied Microbiology >Variation in the Microbiota of Ixodes Ticks with Regard to Geography, Species, and Sex
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Variation in the Microbiota of Ixodes Ticks with Regard to Geography, Species, and Sex

机译：硬x虱的微生物群随地理，物种和性别的变化

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Ixodes scapularis is the principal vector of Lyme disease on the East Coast and in the upper Midwest regions of the United States, yet the tick is also present in the Southeast, where Lyme disease is absent or rare. A closely related species, I. affinis , also carries the pathogen in the South but does not seem to transmit it to humans. In order to better understand the geographic diversity of the tick, we analyzed the microbiota of 104 adult I. scapularis and 13 adult I. affinis ticks captured in 19 locations in South Carolina, North Carolina, Virginia, Connecticut, and New York. Initially, ticks from 4 sites were analyzed by 454 pyrosequencing. Subsequently, ticks from these sites plus 15 others were analyzed by sequencing with an Illumina MiSeq machine. By both analyses, the microbiomes of female ticks were significantly less diverse than those of male ticks. The dissimilarity between tick microbiomes increased with distance between sites, and the state in which a tick was collected could be inferred from its microbiota. The genus Rickettsia was prominent in all locations. Borrelia was also present in most locations and was present at especially high levels in one site in western Virginia. In contrast, members of the family Enterobacteriaceae were very common in North Carolina I. scapularis ticks but uncommon in I. scapularis ticks from other sites and in North Carolina I. affinis ticks. These data suggest substantial variations in the Ixodes microbiota in association with geography, species, and sex.
机译：肩cap龙虾是美国东海岸和美国中西部上部地区莱姆病的主要病媒，但the虫也存在于东南部，那里不存在或很少出现莱姆病。亲缘关系很近的一种物种，伊菲氏菌也携带南方的病原体，但似乎没有将其传播给人类。为了更好地了解the的地理多样性，我们分析了在南卡罗来纳州，北卡罗来纳州，弗吉尼亚州，康涅狄格州和纽约州的19个地点捕获的104个成年I肩cap和13个成年亲tick的菌群。最初，通过454焦磷酸测序对4个位点的tick进行了分析。随后，通过使用Illumina MiSeq机器进行测序，分析了这些地点和其他15个地点的tick。通过两种分析，雌性s的微生物组多样性明显少于雄性s。 tick虫微生物群之间的差异随着位点之间的距离而增加，并且可以从其菌群中推断出a虫的收集状态。立克次氏体属在所有地区都很突出。疏螺旋体也存在于大多数地区，并且在弗吉尼亚州西部的一个地区以特别高的水平存在。相反，肠杆菌科的成员在北卡罗来纳州肩cap小cap中很常见，但在其他地方和北卡罗来纳州艾菲尔tick小un中很少见。这些数据表明，与地理，物种和性别相关的线虫微生物区系存在显着变化。

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