Correlation of decisions made in the olfactometer with feeding behavior.

<p>The percentage decision of individual male and female beetles of <i>C. ruficornis</i> (<i>n</i> = 16 males and <i>n</i> = 16 females) and <i>G. gynandrobrotica</i> (<i>n</i> = 19 males and <i>n</i> = 17 females) for induced plant material (JA treatments 1.0 and 0.001 mmol L⁻¹; y-axis) in the olfactometer (A) and the free-flight cage (B) is displayed against the percentage decision for leaves of induced plants in feeding trials (x-axis). Percentage decision in feeding trials is calculated as the percentage of consumed leaf area of the induced leaf in relation to the overall leaf area consumption in the respective feeding trial ( = 100%). Pearson's correlations were used to evaluate associations between insects' decisions in the olfactometer and their feeding choice [A (as appearing in the figure from top to bottom): G♂: <i>r</i> = −0.151, <i>P</i> = 0.052; C♂: <i>r</i> = −0.091, <i>P</i> = 0.369; C♀: <i>r</i> = 0.064; <i>P</i> = 0.483; G♀: <i>r</i> = 0.084, <i>P</i> = 0.369; B (top to bottom): G♂: r = 0.086; <i>P</i> = 0.752; C♂: <i>r</i> = −0.123; <i>P</i> = 0.650; C♀: <i>r</i> = −0.008; <i>P</i> = 0.973; G♀: <i>r</i> = −0.049; <i>P</i> = 0.851].