Figure 1.

Average ± SE mortality of fifth‐instar nymphs (A) and adult C. lectularius (B) after cold treatment. Different letters above bars show a significant difference (Tukey's test, P < 0.05) between the eight temperature treatments within the same treatment length (1, 2 or 3 weeks). Lines below bars show a significant difference (Tukey's test, P < 0.05) in mortality between the different treatment lengths (1, 2 or 3 weeks) of the same temperature treatment. Coloured lines show the averaged value of fluctuating and constant treatment of each temperature over different treatment lengths (1, 2 and 3 weeks).