[Distance orientation of the tick Ixodes persulcatus to the attractant factors of the prey].

The laboratory and field tests have shown that the odour is the main factor which activates ticks (Ixodes persulcatus) attraction to the host. Ticks have a sensation of a man on 15 metres distance; the number of activated ticks increases with the distance to the host and depends on the wind direction. The infrared radiation source excites only a short time activation of the ticks on 0.