Differences in Paralyzing Ability and Sites of Attachment to Cattle of Rocky Mountain Wood Ticks (Acari: Ixodidae) from Three Regions of Western Canada

Publisher Website
Google Scholar
Abstract
Eight of 10 lambs infested with 10 female Dermacentor andersoni ticks from an area south of Kamloops, British Columbia, became paralyzed or ataxic within 10 days, whereas none of 10 and 9 lambs infested with ticks from 2 Alberta localities became ataxic; contingency tests indicated that these differences were highly significant. Ticks from Waterton National Park, on the Alberta side of the Rocky Mountains, attached to the upper parts of cattle, as did the British Columbian ticks, but did not cause ataxia; thus, “paralyzing potency” and “upperside attachment” are apparently not linked.