Form and Function

The Mucaca mulatta or more common name known as the Rhesus Monkey has adapted to many environments. They thrive in Asia as well as Afghanistan to India; Also they have adapted in regions from Thailand to southern China. They have become dubious in many regions of the world and that is because of the evolution of their form and functions.

These monkeys have developed a diet that has proven worthy of wide ranges of habitats. Their omnivorous diet provides them with a wide range of food which gives them a better chance at survival in many areas. A loss in one food source would not mean that they would starve or have to  change location. In fact a low resource in foraging or prey can lead to the survival mechanism of stealing. The Rhesus monkey has been known to steal from local food shops and raid farm crops. In addition to this source of sustenance is the tourists or locals that feed the monkeys. The Rhesus monkey uses humans as a tool for their own sustenance. (Lang 2005)Rhesus Monkey walking

Another fascinating evolved trait of the Rhesus monkey that has facilitated its successful environment associated omnipresence are its abilities to move. The Macaca mulatta has developed over many years to run, climb, and swim. In which it is best at climbing and swimming over running. The long lanky arms provide it with a excellent ability to climb trees and obstacles with easy. Also, It has a small body to haul around making it even easier to swing across vines and stay on high branches that predators cannot reach. The swimming comes in handy for any cross-island traveling if the monkey decides to attain a different resource        
there, or to escape a predator that is not able to swim. Amazingly, a two day old Rhesus monkey has the ability to swim and this evolution could be due to the fact that if a baby monkey falls off of the tree and there is a predator, then it may only be able to get away if in water, since it may be too weak to climb. (Lang 2005)

Another trait that assists the Mucaca mulatta for escaping predators is its compound eyes (Timmins 2008). They increase its perceptive view and also assist in depth perception. Also the organisms stereoscopic vision morphology assists in its ability to be a predator and capture prey because of the increased ability to perceive depth. The prey of Rhesus monkeys are smaller Rhesus Monkey Climbingorganisms like birds and insects which it can easily overpower. The con of having stereoscopic vision as opposed to monocular vision which brings in a better field of view of the environment and predators around them.

If the Rhesus Monkey’s ability to see large ranges fails, then it still has its large 3-inch long and sharp fangs (Seinfeld 2000). These fangs act as a last line of defense in a life or death situation. Such as if a larger predator catches them such as a human they can bite them in hopes to be released. Also the fangs can bite open hard nuts or dig into the flesh of small animals like birds.

Another adaption for the Rhesus Monkey’s survival is its large brain (seinfeld 2000). The large brain provides it with the ability to outsmart less intelligent predators which increases its ability to survive. The increased survival from this is that the rhesus monkey will have the opportunity to steal from other organisms, and it can out maneuver its predators by understanding them. Such as, the rhesus monkey knows that a leopard is not as good a climber as it is, so it can climb up a tree to divert from the leopard. Also it can figure out that the     
leopard cannot go on the flimsy higher branches
so it will pick a thinner or taller tree.

The Macaca mulatta or “Rhesus Monkey” has developed these complex features through natural selection. The small mutations in each of its morphologies at a time which led to the animals exceptional ability to thrive in a wide range of environments. The brain size of the organism has given it the intelligence to acquire sustenance  and survive from predators. The Rhesus monkey was naturally formed to fit many environment through the process of natural selection and the monkey continues to thrive in many areas.



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