Mal'kova M G, Iakimenko V V, Tantsev A K
Parazitologiia. 2012 Sep-Oct;46(5):369-83.
The character of distribution of two species from the genus Ixodes, the Taiga tick Ixodes persulcatus and Ixodes pavlovskyi in the plain part of Western Siberia is analyzed. The northern border of the range of I. persulcatus in HMAO-Ugra was clarified on the basis of long-term data on the population density of adult and immature ticks (1960-2011). The shift of the southern border of the species range in Western Siberia at the background of anthropogenic transformation (forest restoring activity, stopped sanitary forest cutting, road construction etc) is demonstrated; peculiarities of the distribution of the Taiga tick in some localities of the southwestern Siberia is analyzed. The modern state of the tick population in the joint dwelling zone of I. persulcatus and I. pavlovskyi is characterized. Possible reasons of changes in the structure of tick communities toward total prevalence of I. pavlovskyi in recreation zones of Novosibirsk and Tomsk are discussed. It is noted that the most significant changes in the character of distribution of these two tick species in Western Siberia had evidently occurred after 1990. Just in this period, local stable populations of the Taiga tick to the south of its main range in Western Siberia (within Omsk and Novosibirsk Provinces) were formed; the character of its distribution in the right bank of the Ob River (Novosibirsk Province) and in the valley of the Tom River (Tomsk Province) had changed; I. pavlovskyi became the dominating species.
分析了硬蜱属的两个物种，即远东蜱（全沟硬蜱）和帕氏硬蜱在西西伯利亚平原地区的分布特征。根据成虫和未成熟蜱种群密度的长期数据（1960 - 2011年），明确了全沟硬蜱在汉特-曼西自治区-乌格拉地区分布范围的北界。展示了在人为改造（森林恢复活动、停止卫生伐林、道路建设等）背景下，西西伯利亚该物种分布范围南界的移动情况；分析了远东蜱在西西伯利亚西南部一些地区的分布特点。描述了全沟硬蜱和帕氏硬蜱共同栖息区域内蜱种群的现代状况。讨论了在新西伯利亚和托木斯克的休闲区蜱类群落结构向帕氏硬蜱完全占优转变的可能原因。注意到这两种蜱在西西伯利亚分布特征的最显著变化显然发生在1990年之后。就在这个时期，在西西伯利亚其主要分布范围以南（鄂木斯克和新西伯利亚州境内）形成了远东蜱的局部稳定种群；其在鄂毕河右岸（新西伯利亚州）和托姆河河谷（托木斯克州）的分布特征发生了变化；帕氏硬蜱成为优势物种。
