Ability of female ixodid ticks to recover from poisoning with DDT in the process of feeding]

Ability of hungary females of Ixodes persulcatus, Haemaphysalis concinna and Dermacentor silvarum to feed and lay eggs after having been exposed to different DDT doses (LD100) has been studied. The ticks heavily injuried but still mobile can feed on the host and lay eggs, i.e. to overcome the poisoning. Clutches laid by these females do not differ from control ones. Loss of mobility deprives the ticks of the ability to fed. An increase in DDT dose (LD100 X 100, experiment with I. persulcatus) does not allow the ticks to feed even if the ability to movement is preserved.