Table 1.

Summary of the number of feeding ticks found at wild roe deer in the two areas: Bogesund and Grimsö, between 14th December and 28th February

Study site	Bogesund research area				Grimsö research area
Year (winter)	13/14	14/15	15/16	In total	15/16
No. of individual roe deer	30	42	38	110	30
Total number of examinations	37	83	181	301	31
Re-examined roe deer	6	42	144	192	1
Mean examinations/roe deer (min–max)	1.2 (1–3)	2.0 (1–6)	4.8 (1–10)	2.7 (1–10)	1 (1–2)
No. of examinations with ticks	12	40	57	160	3
No. of new ticks (total)	2	38	81	121	0
Proportion of examinations, new ticks (%)	33.3	47.6	25.7	35.8	0
Proportion of examinations, ticks (%)	32.4	48.2	31.5	36.2	0.097

An “examination” refers to a single capture of a roe deer, and each roe deer may have none, one or more ticks. A single roe deer may have been caught, examined, recaptured and re-examined several times. “Re-examination” refers to when a roe deer has previously been trapped in the same winter, caught and examined once again. “New tick” therefore refers to that the tick can be determined as new since the previous capture and examination