Abstract
The effect of repeated removal in a survey of the seasonal activity of Ixodes ovatus adults by flagging vegetation was determined by the use of the mark-recapture method. I. ovatus adults showed high activity on vegetation during the period from April to mid-July, 1996. However, the activity abruptly decreased from late July and was hardly discernible in late August. The proportions of ticks recaptured increased with progressive survey dates except for those in late May, mid-June, and mid-August. On the final survey date in late August, all the captured ticks were marked ones. These results suggest that the duration and abundance of the seasonal activity of I. ovatus adults are influenced by repeated removal.
