Estrada-Peña A, Oteo J A, Estrada-Peña R, Gortázar C, Osácar J J, Moreno J A, Castellá J
Unidad de Parasitología, Facultad de Veterinaria, Zaragoza, Spain.
Exp Appl Acarol. 1995 Mar;19(3):173-80. doi: 10.1007/BF00046289.
The prevalence of Borrelia burgdorferi sensu lato in several tick species was studied over a 2 year period in two ecologically different areas in Spain. One area was an endemic area for Lyme disease, with a number of autochthonous human cases and supported large populations of Ixodes ricinus on cattle and birds; the second area was characterized by the absence of I. ricinus together with the presence of foxes and their associated tick species. While I. ricinus was the main vector of B. burgdoreri in the endemic area (with a mean prevalence of 14% in adults and 51% in nymphs), adults of both Ixodes canisuga and Ixodes hexagonus had high rates of B. burgdorferi prevalence (30 and 28%, respectively) in the zone where I. ricinus was absent. Immatures of Ixodes frontalis were found to be carriers of the spirochete only in those zones where I. ricinus is present, suggesting evidence for reservoir competence in a tick-bird cycle.
在西班牙两个生态环境不同的地区，对几种蜱虫中伯氏疏螺旋体复合群的流行情况进行了为期两年的研究。一个地区是莱姆病的流行区，有一些本地人类病例，并且在牛和鸟类身上有大量蓖麻硬蜱；第二个地区的特点是没有蓖麻硬蜱，但有狐狸及其相关的蜱虫种类。在流行区，蓖麻硬蜱是伯氏疏螺旋体的主要传播媒介（成虫平均感染率为14%，若虫为51%），而在没有蓖麻硬蜱的地区，犬硬蜱和六角硬蜱的成虫伯氏疏螺旋体感染率都很高（分别为30%和28%）。仅在有蓖麻硬蜱的地区发现额硬蜱的未成熟个体是螺旋体携带者，这表明在蜱-鸟循环中存在储存宿主能力的证据。
