Background Flower coloration is a key enabler for pollinator attraction. Floral visual signals
comprise several components that are generated by specific anatomical structures and …

Research in the honeybee has laid the foundations for our understanding of insect colour
vision. The trichromatic colour vision of honeybees shares fundamental properties with …

Colour patches are complex traits, the components of which may evolve independently
through a variety of mechanisms. Although usually treated as simple, two-dimensional …

Establishing the age at death of individuals is an important step in their identification and
can be done with high precision up to adolescence by analysis of dentition, but it is more …

The ability to see colour at night is known only from a handful of animals. First discovered in
the elephant hawk moth Deilephila elpenor, nocturnal colour vision is now known from two …

The coloration of flowers is due to the wavelength-selective absorption by pigments of light
backscattered by structures inside the petals. We investigated the optical properties of …

Bees discriminate between many different colours of flower petals, but it is not well
understood how they perceive and learn patterns frequently found in flowers with colourful …

Differences in the concentration of pigments as well as their composition and spatial
arrangement cause intraspecific variation in the spectral signature of flowers. Known colour …

We asked whether the detection range of two-coloured centre-surround patterns differs from
that of single-coloured targets. Honeybees Apis mellifera were trained to distinguish …

The way flowers appear to insects is crucial for pollination,,. Here we describe an internal
light-filtering effect in the flowers of Mirabilis jalapa, in which the visible fluorescence emitted …