Reeves Will K, Loftis Amanda D, Sanders Felicia, Spinks Mark D, Wills William, Denison Amy M, Dasch Gregory A
Centers for Disease Control and Prevention, 1600 Clifton Road NE, MS G-13, Atlanta, GA 30333, USA.
Exp Appl Acarol. 2006;39(3-4):321-9. doi: 10.1007/s10493-006-9012-7. Epub 2006 Jul 5.
Argasid ticks are vectors of viral and bacterial agents of humans and animals. Carios capensis, a tick of seabirds, infests the nests of brown pelicans, Pelecanus occidentalis, and other ground nesting birds along the coast of South Carolina. This tick is associated with pelican nest abandonment and could pose a threat to humans visiting pelican rookeries if visitors are exposed to ticks harboring infectious agents. We collected ticks from a pelican rookery on Deveaux Bank, South Carolina and screened 64 individual ticks, six pools of larvae, and an egg mass for DNA from Bartonella, Borrelia, Coxiella, and Rickettsia by polymerase chain reaction amplification and sequencing. Ticks harbored DNA from "Borrelia lonestari", a novel Coxiella sp., and three species of Rickettsia, including Rickettsia felis and two undescribed Rickettsia spp. DNA from the Coxiella and two undescribed Rickettsia were detected in unfed larvae that emerged in the laboratory, which implies these agents are transmitted vertically by female ticks. We partially characterize the novel Coxiella by molecular means.
argasid蜱是人和动物病毒及细菌病原体的传播媒介。海角卡里蜱是海鸟的一种蜱，寄生于褐鹈鹕（Pelecanus occidentalis）的巢穴以及南卡罗来纳州沿海其他在地面筑巢的鸟类的巢穴中。这种蜱与鹈鹕弃巢有关，如果游客接触到携带传染原的蜱，可能会对前往鹈鹕繁殖地的游客构成威胁。我们从南卡罗来纳州迪沃克斯银行的一个鹈鹕繁殖地采集了蜱，并通过聚合酶链反应扩增和测序，对64只个体蜱、6组幼虫和一团卵进行了检测，以筛查巴尔通体、疏螺旋体、柯克斯体和立克次体的DNA。蜱携带了来自“孤独疏螺旋体”、一种新型柯克斯体以及三种立克次体的DNA，包括猫立克次体和两种未描述的立克次体物种。在实验室孵化出的未进食幼虫中检测到了来自柯克斯体和两种未描述立克次体的DNA，这意味着这些病原体是由雌性蜱垂直传播的。我们通过分子手段对新型柯克斯体进行了部分特征描述。
