Phenotypic Variation Among Chimpanzees And Bonobos

-The bonobo is the most recently discovered great ape in modern times.  It was revealed in 1929 by German anatomist Ernest Schwarz that a skull once thought belonging to a juvenile chimpanzee was in fact a new subspecies of chimpanzee known now as the Pan paniscus, or bonobo. (Waal 6)  During the Pleistocene epoch approximately 1.5 million years ago, the Congo River was formed in what is now the Democratic Republic of the Congo. (San Diego Zoo 2)  The river geographically segregated groups and individual chimpanzees south of the river resulting in these chimps being reproductively isolated.  Allopatric speciation took place as a response to new

In the Article “The 2% Difference” by Robert Sapolsky explains that scientists have decoded the chimpanzee genome to discover 98 percent of human DNA is similar. In Sapolsky article he goes on to explain the two percent difference humans and chimpanzee. A few of his discovered was that “Chimps excel at climbing trees, but we beat them hands down at balance-beam routine; they are covered in hair, while we have only the occasional guy with really hair shoulders” (Angeloni pp.40 2016). Physically we look different and can do different physical activities then chimpanzee. Sapolsky continues by saying how we have differences in social behavior. It is known

Chimpanzees are great apes that are the closest living relatives to humans (Larsen, 2014). These primates have been studied and observed intently for decades, and there are many theories that explain why they are the way they are. Chimpanzees learn the necessary skills of survival through social and cultural contexts and pass these traits along to their offspring. In researching these smart and interesting primates I have understood the social and cultural roles chimpanzees have that are necessary for survival. The mother- infant bond is crucial to the development of young chimpanzees and these females are known for teaching their young social roles and behavior, communication

Throughout the term, reading the book, “Through a Window” by Jane Goodall has been quite intriguing for me, in that it has inspired me with new ideas and perceptions about how our own species has evolved over time. I have really enjoyed seeing the many similarities that hominids share with other primate species, especially chimpanzees. Goodall’s research only further proves that we are not only extremely biologically similar to chimpanzees in our DNA, but have many behavioral similarities as well. The film, “Monkey in the Mirror” also shows support for our likeness in intellectuality. These documented findings on chimpanzee and human resemblances provides the strong evidence needed to conclude the fact that humans do indeed share a common ancestor with great apes.

According to National Geographic, scientists have sequenced the genome factor of the chimpanzee and found that humans are 98.5% similar to the ape species. The chimpanzee is our closest relative in the animal kingdom; however, some people are not aware of our resembling traits with chimpanzees. Jane Goodall’s, In the Shadow of Man, describes some similar traits humans and chimpanzees have such as their facial expressions and emotions, use of tools, and diet.

This paper aims to study the traits of non-human primates. By observing two types of primates including Common Squirrel Monkey (Saimiri sciureus) and Western Gorillas (Gorilla Gorillas), I try to find out their characteristics, pattern of their behavior, and differences between these two primate species. Especially, characteristics and behavior such as social interaction, food acquisition and intelligence will be discussed and compared in this paper. In order to enhance the persuasiveness of my observation, I recorded and examined at least 25 distinct characteristics of both Common Squirrel Monkeys and Western Gorillas. It is also helpful for me to compare these two primates. Apart from exploring the primates’ traits and differentiation between them, this paper will discuss the effects of captivity. How being in captivity and on display in a zoo would influence their behaviors and emotions? The observation was a great success and I have successfully derived with a hypothesis base on our observing data. The ultimate goal of this paper is arousing humans’ awareness of the importance of studying primates.

Primates have some features that support them for the arboreal life. First, primates have developed grasping extremities with the divergent hallux and nails instead of claws. These features help them grasping branches better. Second, primates have enhanced vision with the optic convergence, which helps them look straightforward. They also have postorbital bar to protect the eyes. Third, primates reduced the olfaction that is not useful for arboreal life. Fourth, comparing to the other mammals, primates have large brain consider to the body size. The large brain helps them to process the complicating reactions, and thinking. Haplorrhines primates have some unique derived traits: the loss of tapetum lucidum, which enhances the vision in the darkness; and haplorhini, which is dry external nose. The anthropoid primates have developed some derived traits. They have postorbital bar with closure, and this makes a complete bony ring surrounds the eyes. They also have fused mandibular symphysis. The Platyrrhines have the dental formula 2.1.3.3/2.1.3.3. The Catarrhines have dental formula 2.1.2.3/2.1.2.3. The Cercopithecoids have the bilophodont molars to enhance the chewing ability. The hominoids are the most developed primates, which have some derived unique traits. They have larger brain, loss of tail, longer arms than legs, broad thorax with more muscles, and highly mobile shoulder.

Primates first evolved from the trees of tropical forests, later to the ground. Through the times of promisians to human, many characteristics has been represented due to the adaptations to new environments and resulted in evolutionary changes. The Earth has encountered several geological and climatic changes over time. For the primates existed at that time had to adjust itself especially in body configurations and locomotion in order to better survive. It is important to be aware of this information since we are the part of occurring changes as well. Throughout the evolution owing to

Joseph Henrich began, A Puzzling Primate, by describing how physically inept human beings are when compared to the rest of the animal kingdom. He continues with this logic when he demonstrates, that humans in this era, would not be able to survive if placed in the wild forest environment. Due to the biological weakness of humans, culture became a necessary defense mechanism and a form of protection. Culture became a unique way for humans to adapt. Despite the obvious physical weakness of humans, through culture we have rose to be the dominant species.

Primate diversity can be strongly seen amongst the Bonobos and Chimpanzees; however, each primate species shares similar social traits that are common among the human species. In the various short videos on Bonobos and Chimps indicated that Chimps are violent creatures where males must assert social dominance by abusing their female counterpart. If a group of chimps were to encounter another group of chimps then there would be war amongst the two group. On the other hand, bonobos are the complete opposites of the chimp cousins. Bonobos are female dominant primate species and disputes are handled with intercourse. Intercourse for the bonobos species is also used to solidify relationships amongst both males and females. When two different groups of bonobos meet one another there are friendly interaction and the two groups would

Introduction This first lecture is designed to introduce the primate order in terms of its classification and to familiarise you with the animals so that the rest of the course makes some sort of sense. I will cover a working definition of what makes a primate, give you a general classification scheme, describe the major features that identify the groups within the classification and discuss some of the controversial areas of the classification. I shall treat the taxonomy as a synonym for classification which seems to be its commonest current usage, although you should be aware that some people consider taxonomy to be more about the principles behind the classification than the classification itself.

Question 1: What defines a primate What defines a primate? A primate is a unique and intelligent creature. We as humans fall under the primate category, but there are several types of primates somewhere between one-hundred and ninety and three-hundred and fifty species to be a bit more precise. Primate are unique because of the anatomical characteristics that separate them from other mammals. For an example their hands and feet, their shoulders and hips, and even their brain those are only a few traits to mention that separate them from other animals.

One of the main reasons why we are so interested in the other primates is that by looking at them we can obtain some ideas of what our ancestor must have been like a few millions years ago. Even though, we are not descended from any modern-type monkey or ape, our lineage does appear to have gone through stages in which we were a medium-sized, reasonably intelligent creature with good binocular vision, hands that were good at manipulation and the ability to climb trees. An evolutionary trend in primates involves the development of offspring both before and after birth and their integration into complex social systems. Another trend in primate evolution has been toward a more elaborate brain. In addition to brain size and gestation periods,

Does having more previous experience with tools using lead to better performance in future planning tasks? Do inexperienced bonobos and orangutans less likely to save tools for future use? How will they deviate in the tool choosing performances when compare with experienced users (Mulcahy, & Call, 2006)?

A stated in “The 2% Difference,” the core differences between humans and chimpanzees are based on the differences in altering genes. They differ in regulating genes, on and off genes, and on different types of deletion and insertion mutation. They also differ in the types of genes that are related to the immune system, parasite, and infectious diseases. As well has having different brain complexities.