Bumblebee (Bombus friseanus) visiting the human-red flower of Onosma confertum (Boraginaceae) and reflectance spectra of natural, UV+ (coated with only oil substrate) and UV− (coated with sunscreen mixture and oil substrate) flowers (a). Their colour loci were mapped in the colour hexgon model (Chittka 1992) (b) and the RNL model (Vorobyev and Osorio 1998) (c). The relevant region of the coordinates are detailed to show the relative positions of colour loci in more detail.

Reflectance curves of the background, training and testing stimuli (cultivated varieties of Camellia japonica) that have been used in colour choice by flower-naïve bumble bees.

【💡High Cited 2020-2022 】
The ultraviolet colour component enhances the attractiveness of #RedFlowers of a bee-pollinated plant

Core:
1️⃣ #UltravioletReflection
2️⃣ Color preference of Bumblebees

#BeePollination | #ColourVision | #FloralColourEvolution | #PollinationSyndrome

doi.org/10.1093/jpe/...