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Fig. 3. Frequency plots of the duration of quiescence events by I. ricinus nymphs at saturation deficits of (A) 9.3 mmHg, (B) 3.5 mmHg and (C) 1.9 mmHg (1 mmHg=133.3 Pa). Most events are shorter than 24 h (grey bars). Quiescence duration is not related to saturation deficit (Jonckheere test, P=0.93; see text for details).