Kahl O, Janetzki C, Gray J S, Stein J, Bauch R J
Institut für Angewandte Zoologie, Freie Universität Berlin, Germany.
Med Vet Entomol. 1992 Oct;6(4):363-6. doi: 10.1111/j.1365-2915.1992.tb00634.x.
Unfed nymphal Ixodes ricinus, Haemaphysalis concinna, and adult Dermacentor reticulatus were collected in two locations of Saxony in July and September 1991 by flagging. In July, the abundance of nymphal I. ricinus was about 2-3 times higher than that of nymphal H. concinna, a time of the year when nymphs of both species are reported to have a seasonal peak of activity. No D. reticulatus were flagged concurrently. In September, host-seeking activity of nymphal I. ricinus was again quite high as was that of adult D. reticulatus but only low numbers of nymphal H. concinna were collected. The flagged ticks were individually examined for Borrelia by an indirect immunofluorescence assay (I. ricinus: n = 414; H. concinna: n = 96; D. reticulatus: n = 116). The prevalence of Borrelia (probably B. burgdorferi) in I. ricinus varied from 12.1% to 21.0%. No borreliae were found in H. concinna. Of the examined D. reticulatus from one site (n = 97) 11.3% contained either B. burgdorferi or a related Borrelia. This may be the first finding of Borrelia in an Eurasian Dermacentor species.
1991年7月和9月，通过拖旗法在萨克森州的两个地点采集了未进食的蓖麻硬蜱若虫、全沟硬蜱若虫以及血红扇头蜱成虫。7月，蓖麻硬蜱若虫的数量比全沟硬蜱若虫多约2至3倍，这两个物种的若虫在一年中的这个时候都有季节性活动高峰。同时未采集到血红扇头蜱。9月，蓖麻硬蜱若虫的宿主搜寻活动和血红扇头蜱成虫的一样高，但仅采集到少量全沟硬蜱若虫。通过间接免疫荧光法对采集到的蜱虫逐个检测伯氏疏螺旋体（蓖麻硬蜱：n = 414；全沟硬蜱：n = 96；血红扇头蜱：n = 116）。蓖麻硬蜱中伯氏疏螺旋体（可能是伯氏疏螺旋体）的感染率在12.1%至21.0%之间。在全沟硬蜱中未发现伯氏疏螺旋体。在一个地点检测的血红扇头蜱（n = 97）中，11.3%含有伯氏疏螺旋体或相关的疏螺旋体。这可能是在欧亚大陆血红扇头蜱物种中首次发现伯氏疏螺旋体。
