Fig. 6
Relationship between blue-green (BG) ratio, luminance, and trap catch for greenhouse whitefly (GWF) and Western flower thrips (WFT) for yellow-green to orange-red colours. (a, c) There is a significant correlation between BG ratio and pest capture for GWF and WFT, with colours that are more highly stimulating to the green relative to blue photoreceptor (smaller values) performing better than traps with a lower opponent response (larger values). (b) There is a positive correlation between trap luminance and GWF catch, (d) but no significant relationship between luminance and WFT catch. (a–c) Plotted trendline represents a negative binomial regression fit. Conditional R2 for the model showing the effect of BG ratio and luminance on GWF capture was 0.33 and for the WFT model, which included only BG ratio, was 0.02.
