Communicating In Colour Reading Passage
Communicating In Colour Reading Passage
Paragraph A
Chameleons have around 160 different species. The majority of the species are found in Africa, Madagascar, and other tropical climates, while several are also found in sections of southern Europe and Asia. There are introduced populations in Hawaii, as well as California and possibly Florida.
Paragraph B
Novel species are still found on a regular basis. Dr. Andrew Marshall, a York University conservationist, was studying monkeys in Tanzania. In the Magombera forest, he stumbled upon a twig snake, which, terrified, coughed up a chameleon and ran. Although being advised not to touch it due to the risk of venom, Marshall suspected it was a new species and took an image to transmit to colleagues, who verified his findings. Kinyongia Magombera, which translates as "the chameleon from Magombera," is the consequence, and the fact that it was difficult to identify is exactly what made it distinctive. As a result, colour is not the greatest way to distinguish chameleons and various species are usually identified based on the patterning and form of the head, as well as the arrangement of scales. In this case, it was the chameleon's nose scale bulge.
Paragraph C
Chameleons can use colour for both communication and camouflage, quickly changing from vivid, showy colours to the precise colour of a twig. They exhibit a remarkable diversity of colours, ranging from almost black to vibrant blues, oranges, pinks, and greens, and even many at the same time. A common fallacy is that chameleons can blend in with any background, whether it's a chequered red and yellow shirt or a Smartie box. Yet, each species has a distinct set of pigment-containing cells dispersed across their bodies in a certain arrangement, which determines the spectrum of colours and patterns they may display. To the dismay of many kids, placing a chameleon on a Smartie box probably occurs in a stressed, perplexed, dark grey or mottled chameleon.
Paragraph D
Chameleons are visual animals with excellent eyesight that communicate through colour. When two male dwarf chameleons come into contact, they display their brightest colours. They puff out their throats and present themselves side-on with their bodies squashed to appear as large as possible and to show off their colours. This allows them to examine each other from a maximum range. If one is clearly superior, the other quickly changes to a passive colouration, usually a dull combination of greys or browns. Suppose the opponents are evenly matched, and both maintain their bright colours. In that case, the contest can escalate to serious violence and jaw-locking, with each trying to push the other along the branch in a power competition. Eventually, the loser will show his defeat with submissive colouring.
Paragraph E
Females use assertive displays to repel male bonding attempts. Males use the same bright colours when courting a female that they do when competing. Females usually do not react or be responsive and, at the same time, neglect males straightly by showcasing a different or contrasting light and dark colour pattern. They also keep their mouths open, and their bodies keep moving side to side constantly. If a male continues to court a female, she will frequently chase and bite him until he flees. Although impressive, the range of colour change during female displays is not as massive as that shown by males.
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Many people believe that colour change transformed to allow chameleons to blend in with a wider range of backgrounds in their environment. If this were the case, the ability of chameleons to change colours should be related to the range of background colours in the chameleon's habitat, but there is no indication of such a pattern. For instance – since forest habitats may have a wider range of brown and green background colours than grasslands, forest-dwelling species may be anticipated to have greater colour change abilities. Instead, the males with the most eye-catching display colours exhibit the maximum colour change. Their displays are constituted of colours that differentiate sharply from one another and with the background vegetation. This shows that rather than enabling camouflage, the species that evolved the most amazing capacities for colour shift did so to enable them to frighten competitors or attract mates.
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How do we know that the colours used by chameleons in their displays grab the attention of other chameleons or, for that matter, of predatory birds? Understanding how chameleons or their bird predators see the world involves knowledge of their visual systems as well as how their brains may interpret visual data. This is because both the physical characteristics of the object and the wiring of the brain play a role in how colours are perceived. Fortunately, recent scientific developments have made it possible to collect such measurements in the field, and knowledge about the visual systems of various animals is becoming easier to come by.
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Biologists have been motivated for millennia by the astounding variety of colours and decorations found in nature. But, in order to comprehend the purpose and evolution of animal colour patterns, we must first understand how the creatures – or their predators – view them. After all, conspicuousness and camouflage are subjective concepts.
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