| spatial distribution of the karoo paralysis tick ixodes rubicundus (acari: ixodidae) within a false upper karoo veld type. | spatial distribution of the karoo paralysis tick (ixodes rubicundus) has been studied in a paralysis enzootic area of the southwestern orange free state. significantly more females than males were collected from the vegetation. most ticks (99%) used grass as questing sites at a height of approximately 45 cm (range 10-97 cm), which correlates with the size of host animals. no significant differences between the questing height of male and female ticks were evident. the ticks were found on most of ... | 1991 | 1860416 |