Journal of Neuroscience, Vol 8, 156-159, Copyright © 1988 by Society for Neuroscience
Color constancy in the honeybee
A Werner, R Menzel and C Wehrhahn
Institut fur Tierphysiologie, Berlin, FRG.
A multicolored display was illuminated by 3 bands of wavelengths
corresponding to the maxima of the spectral sensitivities of the 3 types of
photoreceptors found in the bee retina. The intensity of each band could be
varied individually. The light fluxes emitted by the colored areas of the
multicolored display were determined quantitatively. Free-flying honeybees
were trained with sugar solution to choose one of the colored areas. The
illumination was then changed in such a way that the light fluxes formerly
emitted by the training area were now measured on another area. When the
trained bees were tested under those conditions, they still chose the
training area. The relative positions of the colored areas were changed in
order to exclude learning of position. It is concluded that color vision in
bees is, in a certain range, independent of the spectral content of the
illumination. Model calculations show that the behavior observed in bees is
consistent with the retinex theory (Land, 1977), i.e., an algorithm using
long-range interactions is required to explain color constancy.