Figure 4.

Olfactory response of Phytoseiulus persimilis to tomato plants infested with Tetranychus urticae and uninfested control plants. A, Percentages of predatory mites that chose for odors of infested plants (black bars) or for odors of uninfested plants (gray bars) after 3 or 4 d (tests with wild type and def-1 were conducted independently). Results were analyzed with a replicated test for goodness of fit. An asterisk (^*) denotes P = 0.001. None of the other experiments tested significantly different (0.84 > P < 0.98). B, Total number of predatory mites per experiment that did not make a choice within 5 min (white bars).