Vanuslin S A, Smyslova T O, Solina L T
Parazitologiia. 1981 Nov-Dec;15(6):498-505.
The occurrence of an isolated population of I. persulcatus in the health resort zone of Leningrad is due to a character of vegetation, soils, relief and availability of such food sources as birds, hares and elks. The seasonal dynamics of ticks abundance depends very little on temperature but depends on the amount of precipitations and on the number of days with precipitations; long fluctuations in the ticks abundance are stimulated, in general, by temperature. Annual mechanical collections of ticks in nature and their chemical extermination on a small area do not affect sufficiently the abundance of populations.
列宁格勒疗养区出现孤立的全沟硬蜱种群是由于植被、土壤、地形特征以及鸟类、野兔和麋鹿等食物来源的可获得性。蜱虫数量的季节动态对温度的依赖性很小，而取决于降水量和有降水的天数；一般来说，蜱虫数量的长期波动受温度刺激。每年在自然环境中机械采集蜱虫并在小范围内进行化学灭蜱，对蜱虫种群数量的影响不够显著。
