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Table 1 Phenotypic traits modified by tick-borne pathogens in the main vectors of B. burgdorferi

From: Search for blood or water is influenced by Borrelia burgdorferi in Ixodes ricinus

Modified trait

Tick species a

Stage b

Pathogens c

Detailed effect

Reference

Questing activity

Ip

A

Bb

Walk shorter distances

[50,79]

Ip

N, A

Bb

Questing activity is increased but inhibited more importantly by temperature

[80]

Ip

N, A

Bb

Questing triggered by higher temperature and lower relative humidity

[66]

Ip

A

Bb

Reach higher questing height, walk slower

[52]

Ip

A

TBEv

Walk faster, reach higher questing height, more tolerant of desiccation

[50]

Ir

L, N, A

Bb

Walk shorter distances

[81]

Ir

N

Bb

Walk less, stay in a relatively dry environment

[53]

Ir

A

TBEv

Walk faster, more tolerant to tick-repellent

[82]

Is

N

Bb

Walk longer distances, reach higher questing height, attracted by vertical surfaces

[51]

Is

A

Bb

Walk shorter distances, reach lower questing height, avoid vertical surfaces

[51]

Survival & energy reserves

Ip, Ir

A

Bb

Prolonged survival

[67]

Ir

N, A

Bb

Increased survival under desiccating conditions

[56]

Ir

N

Bb

Higher energy reserves (fat content)

[61]

Is

N

Ap

Increased survival under cold conditions

[55]

Is

N

Bm

Increased blood meal size

[63]

  1. a Ip, I. persulcatus; Ir, I. ricinus; Is, I. scapularis.
  2. bL, larvae; N, nymphs; A, adults.
  3. c Ap, A. phagocytophilum; Bm, B. microti; Bb, B. burgdorferi s.l.; TBEv, TBE virus.