Abstract
Ten camels, 10 sheep, and 10 goats were examined for ticks monthly (October 1980–September 1981) on a farm and in a town market in Al-Qasim Province, Saudi Arabia. Sheep and goats were uninfested. Camels were hosts of 1472 Hyalomma ticks (1329 adults, 143 nymphs). The adults were 1045 H. dromedarii , 174 H. anatolicum excavatum , and 110 of 6 other species/subspecies. The nymphs were not identified to species. Most of these 8 Hyalomma species/subspecies are known vectors of disease agents of humans and/or domestic animals. We assume that the generally low tick infestation rates in Al-Qasim may reflect recent modification of the desert environment for agriculture and the paucity of small wild vertebrates that serve as hosts of immature ticks of many species.
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