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Topics about "colour vision" include:

  1. Camera eyes of cephalopods
    The remarkable similarity between the camera eyes of cephalopods and vertebrates is one of the best-known examples of evolutionary convergence.

  2. Camera eyes in vertebrates, cephalopods and other animals
    Camera eyes are superb optical devices, so it is not surprising that they have evolved several times. But why, of all animals, in the brainless jellyfish? Or for that matter in a slow-moving snail?

  3. "Colour vision" in Firefly squid
    The Japanese firefly squid (Watasenia scintillans), which inhabits the deep ocean, has three visual pigments located in different parts of the retina that are likely to allow colour discrimination as they each have distinct spectral sensitivities.

  4. Scanning eyes in molluscs and arthropods
    Some sea snails have a linear retina. What a hopeless arrangement, to see the world through just a narrow slit! Not quite, because they have come up with a rather intriguing trick to extend their visual field - and it's a trick too good to use only once.

  5. Compound eyes in ark clams
    Read on if you want to know more about bivalves with burglar alarms…

  6. Vision in echinoderms
    Among brittlestars and sea urchins we find visual systems that in some ways rival the arthropods in the form of compound eye-like structures.

  7. Trichromatic vision in mammals
    Who has not enjoyed the splash of colour in a market: gorgeous red peppers, the green of basil and what on earth are these purple vegetables over there? All thanks to trichromatic vision, another story of convergence.

  8. Bats: Insights into convergence
    Bats show a fascinating array of convergences, from echolocation to flight to nectar feeding. Vampire bats can even detect infrared radiation, while others might be able to see into the ultraviolet end of the spectrum.

  9. Autumn leaf colouration
    Autumn colours are likely to be adaptive, as the 'default' is simply to remain green up to leaf fall, and both red and yellow leaf colouration have evolved independently on many occasions in gymnosperms and woody angiosperms.

  10. Monochromacy in mammals
    Underwater environments are dominated by blue light. Ironically, whales and seals cannot see blue, because they have independently lost their short-wavelength opsins.

Topics containing the search term "colour vision" are:

  1. “Colour vision” in Firefly squid
    The Japanese firefly squid (Watasenia scintillans), which inhabits the deep ocean, has three visual pigments located in different parts of the retina that are likely to allow colour discrimination as they each have distinct spectral sensitivities.

  2. Trichromatic vision in mammals
    Who has not enjoyed the splash of colour in a market: gorgeous red peppers, the green of basil and what on earth are these purple vegetables over there? All thanks to trichromatic vision, another story of convergence.

  3. Vision in echinoderms
    Among brittlestars and sea urchins we find visual systems that in some ways rival the arthropods in the form of compound eye-like structures.

  4. Monochromacy in mammals
    Underwater environments are dominated by blue light. Ironically, whales and seals cannot see blue, because they have independently lost their short-wavelength opsins.

  5. Pufferfish (and inflation)
    Pufferfish are some of the most extraordinary fish to have evolved, especially because of their capacity to swallow water and inflate themselves to something like a football. Not only that but some representatives can be deadly to the unwary diner...

  6. Bats: Insights into convergence
    Bats show a fascinating array of convergences, from echolocation to flight to nectar feeding. Vampire bats can even detect infrared radiation, while others might be able to see into the ultraviolet end of the spectrum.

  7. Camera eyes in cubozoan jellyfish
    On each of the four club-like extensions (rhopalia) near the base of the cubozoan jellyfish bell there are two camera-eyes, one pointing upwards and the other downwards.

  8. Compound eyes in arthropods
    It is clear that amongst the arthropods as a whole the compound eye has evolved at least twice, and possibly even more times.

  9. Scanning eyes in molluscs and arthropods
    Some sea snails have a linear retina. What a hopeless arrangement, to see the world through just a narrow slit! Not quite, because they have come up with a rather intriguing trick to extend their visual field - and it's a trick too good to use only once.

  10. Cavitation: bubble formation in plants, reptiles and shrimps
    The formation of bubbles in a fluid is known as cavitation. Typically this occurs at low pressures, and is perhaps best known in the xylem of plants where embolisms can be destructive to the surrounding tissues.

  11. Crustaceans: insights into convergence
    Whilst predominantly marine, quite a number of crustaceans have invaded freshwater habitats and even more interestingly a few demonstrate terrestrialization, effectively freeing themselves from their aquatic ancestry.

  12. Camera eyes of cephalopods
    The remarkable similarity between the camera eyes of cephalopods and vertebrates is one of the best-known examples of evolutionary convergence.

  13. Octopus and other cephalopods: convergence with vertebrates
    What could be more different from us than the alien-like octopus? Hold on. Look it in the eye and think again.

  14. Loss of olfactory capacity in primates and cetaceans
    It is widely thought that reduced olfactory capacity in apes is linked to the development of acute vision, especially trichromacy.

  15. Birds: insights into convergence
    Intriguing ecological and morphological parallels can be found among the Neoaves. Many of these forms were initially believed to be each other's closest relatives, but are now widely recognised as classic examples of convergence. Think how similar swifts and swallows are, but they are only distantly related.

  16. Sleep in animals
    Suffering from insomnia? Fruit flies do as well...

  17. Beetles: insights into convergence
    The beetles are probably the most diverse animal group on earth, so it is not at all surprising that they provide many fascinating insights into convergence.