The basic precondition for color vision is the presence of at least two receptor types with
different spectral sensitivities. The sensitivity of a receptor is mostly defined by the opsin …

Color vision is an important sensory capability that enhances the detection of contrast in
retinal images. Monochromatic animals exclusively detect temporal and spatial changes in …

The capacity for cone‐mediated color vision varies among nocturnal primates. Some
species are colorblind, having lost the functionality of their short‐wavelength‐sensitive‐1 …

The question of whether a species matches the colour of its natural background in the
perspective of the correct receiver is complex to address for several reasons; however, the …

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 …

This is a portion of the eBook at doi: 10.7551/mitpress/1994.001. 0001 light-guiding structure
(AW Snyder, 1979). In honeybees, it was traditionally thought that four of these receptors are …

In spontaneous-choice experiments on the butterflies Aglais urticae L.(Nymphalidae) and
Pararge aegeria L.(Satyridae) the spectral effectiveness and spectral sensitivity of various …

Fruit color changes during ripening are typically viewed as an adaptation to increase signal
efficacy to seed dispersers. Plants can increase signal efficacy by enhancing chromatic …

We present a mechanism by which organisms with only a single photoreceptor, which have
a monochromatic view of the world, can achieve color discrimination. An off-axis pupil and …

Colour is one of several stimuli used by herbivorous insects in host choice. Insects have
between 2 and 5 different types of photoreceptors to catch quanta of different wavelengths of …