Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1-3, 612 42 Brno, Czech Republic.
Vet Parasitol. 2011 Dec 29;183(1-2):130-5. doi: 10.1016/j.vetpar.2011.07.006. Epub 2011 Jul 12.
Host-seeking Dermacentor reticulatus ticks were detected by flagging method at 46 localities at south-east part of the Czech Republic, in the basins of rivers Morava and Dyje. Exact north-west distribution limits of D. reticulatus were defined in this area for the first time. Detailed prediction map of probabilities of D. reticulatus occurrence was obtained using GIS analysis. Spatial model delimited a south-north gradient in probability across the studied area, with highest probabilities above 0.8 in its southernmost part. Abundance of D. reticulatus varied markedly between localities in interval 0.33-222 of ticks per flag per hour. The highest abundances were in flooded areas at lower streams, towards upper streams abundance and density of these ticks decreased. Females prevailed in samples with population sex ratio of 0.413, significantly deviating from parity. Larvae and nymphs of this species were not detected by flagging. Although D. reticulatus range expansion probably did not reach such a degree as reported in other countries, these ticks became very abundant in some parts of studied area. Since spreading of vector-borne diseases became a problem in Europe, the knowledge of their exact recent geographic ranges is important for future modelling of their shift predictability.
采用旗语法在捷克东南部莫拉瓦河和代耶河的流域的 46 个地点检测到了寻找宿主的血红扇头蜱。首次在该地区确定了血红扇头蜱确切的西北分布极限。使用 GIS 分析获得了血红扇头蜱出现概率的详细预测图。空间模型在研究区域内划定了一个从南到北的概率梯度，最南部的概率最高，超过 0.8。在 0.33-222 只/小时的范围内，不同地点的血红扇头蜱数量差异显著。在下游的洪水泛滥地区数量最多，而在上游地区，这些蜱的数量和密度减少。在种群性别比为 0.413 的样本中，雌性占优势，明显偏离了雌雄均等。未通过旗语法检测到该物种的幼虫和若虫。尽管血红扇头蜱的分布范围扩张可能没有其他国家报道的那么大，但在研究区域的某些地区，这些蜱类变得非常丰富。由于虫媒传染病在欧洲的传播成为一个问题，因此了解它们最近的确切地理范围对于未来预测其转移的可预测性建模非常重要。
