Backstage: animal colouring
May 7, 2015 22:47:53 GMT
Post by Cardea on May 7, 2015 22:47:53 GMT
en.wikipedia.org/wiki/Golden_tortoise_beetle
The beetle is 5 to 7 millimeters in length. It is variable in color from orange to gold and it is often metallic, earning it the nickname "goldbug". Its external margins are expanded and lack pigmentation, becoming nearly transparent. The color changes seasonally, and the beetle can change color when threatened by changing the flow of fluid between the layers of its cuticle. It turns from shiny gold to dull brown when disturbed.
en.wikipedia.org/wiki/Camouflage#Changeable_skin_pattern_.2F_colour
The skins of cephalopods such as the octopus contain complex units, each consisting of a chromatophore with surrounding muscle and nerve cells.[104] The cephalopod chromatophore has all its pigment grains in a small elastic sac, which can be stretched or allowed to relax under the control of the brain to vary its opacity. By controlling chromatophores of different colours, cephalopods can rapidly change their skin patterns and colours.
The beetle is 5 to 7 millimeters in length. It is variable in color from orange to gold and it is often metallic, earning it the nickname "goldbug". Its external margins are expanded and lack pigmentation, becoming nearly transparent. The color changes seasonally, and the beetle can change color when threatened by changing the flow of fluid between the layers of its cuticle. It turns from shiny gold to dull brown when disturbed.
en.wikipedia.org/wiki/Camouflage#Changeable_skin_pattern_.2F_colour
The skins of cephalopods such as the octopus contain complex units, each consisting of a chromatophore with surrounding muscle and nerve cells.[104] The cephalopod chromatophore has all its pigment grains in a small elastic sac, which can be stretched or allowed to relax under the control of the brain to vary its opacity. By controlling chromatophores of different colours, cephalopods can rapidly change their skin patterns and colours.