Animal colour vision
However, many species see colour, in different ways, and there are still many open questions. We address some of them:
- Which animals, besides moths and geckos possess nocturnal color vision? We are presently investigating whether frogs and toads can use their two rod types to see colour at night.
- Why have marine mammals lost their blue-sensitive cone? Are they colour-blind or do they use rods for colour vision?
- Why do some butterflies have a red-receptor where others don’t? How did this evolve, and what is the ecological relevance?
- How does the receptor mosaic in the retina relate to the spatial resolution of chromatic and achromatic vision?
- How do male damselflies see the three colour morphs of females, and how do females create their colours?
- How well can tetrachromatic birds discriminate colours – compared to humans?
There are many more open questions to be posed, and students with own questions on colour vision are always welcome!