Fig. 4. Pooled frequency plots of I. ricinus nymphal questing, walking and quiescence start (top) and end (bottom) times over 10 days in a 14 h:10 h L:D cycle under three climatic conditions (see text). The light cycle is indicated by the broken lines, with full intensity beginning at 10.00 h. Totals of 322 quiescence, 143 questing and 541 walking events were recorded for 95 nymphs (see text for further details).

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