Bernadette Barbier November 20, 2019 Fruit
Countershading was first described by the American artist Abbott Handerson Thayer, a pioneer in the theory of animal coloration. Thayer observed that whereas a painter takes a flat canvas and uses colored paint to create the illusion of solidity by painting in shadows, animals such as deer are often darkest on their backs, becoming lighter towards the belly, creating (as zoologist Hugh Cott observed) the illusion of flatness, and against a matching background, of invisibility. Thayer’s observation ”Animals are painted by Nature, darkest on those parts which tend to be most lighted by the sky’s light, and vice versa” is called Thayer’s Law.
Some prey animals such as zebra are marked with high-contrast patterns which possibly help to confuse their predators, such as lions, during a chase. The bold stripes of a herd of running Zebra have been claimed make it difficult for predators to estimate the prey’s speed and direction accurately, or to identify individual animals, giving the prey an improved chance of escape. Since dazzle patterns (such as the Zebra’s stripes) make animals harder to catch when moving, but easier to detect when stationary, there is an evolutionary trade-off between dazzle and camouflage. Another theory is that the zebra’s stripes could provide some protection from flies and biting insects.
Colors affect the bodily functions, mind and emotions with the energy produced by light. Studies conducted clearly demonstrate the benefits of colors where the development of the brain, creativity, productivity and learning are concerned. The effects of color on human beings can be varied; causing excitement, lending calm, giving inspiration, raising anxiety or tension or giving peace are some of these effects. These effects can be observed more distinctly in children. Children can be more sensitive to colors.
Batesian mimicry was first described by pioneering naturalist Henry W. Bates. When an edible prey animal comes to resemble, even slightly, a distasteful animal, natural selection favors those individuals that even very slightly better resemble the distasteful species. This is because even a small degree of protection reduces prediction and increases the chance that an individual mimic will survive and reproduce. For example, many species of hover fly are colored black and yellow like bees, and are in consequence avoided by birds (and people).
In contrast to black, it is considered reliable and supportive by many people. It can be specifically used in teenagers’ rooms. Due to the fact that it is a down-to-earth color influenced by the energy of red and yellow and the seriousness of black, it could prove helpful in developing feelings of responsibility and protection in teenagers. It is a color associated with will and possession. Brown as a color has positive influence on the family and friendships of teenagers. At the same time it gives peace and serenity. It calms teenagers high spirits and helps them to remain down to earth in the academic field. To achieve success in education simultaneously with relaxation you can choose to color a part of your teenager’s room in a shade that is yellow intense. Moreover, silky beige and straw colors can be used together in nurseries. This color gives rise to feelings of confidence and is relaxing.
Bio luminescence is the production of light, such as by the photosensor of marine animals, and the tails of glow-worms and fireflies. Bio luminescence, like other forms of metabolism, releases energy derived from the chemical energy of food. A pigment, luciferin is catalysed by the enzyme luciferase to react with oxygen, releasing light. Comb jellies such as Euphemisms are bio luminescent, creating blue and green light, especially when stressed; when disturbed, they secrete an ink which luminescence in the same colors. Since comb jellies are not very sensitive to light, their bio luminescence is unlikely to be used to signal to other members of the same species (e.g. to attract mates or repel rivals); more likely, the light helps to distract predators or parasites. Some species of squid have light-producing organs (photophores) scattered all over their undersides that create a sparkling glow. This provides counter-illumination camouflage, preventing the animal from appearing as a dark shape when seen from below. Some anglerfish of the deep sea, where it is too dark to hunt by sight, contain symbiotic bacteria in the ’bait’ on their ’fishing rods’. These emit light to attract prey.
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