Variation In Primate Behavior

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,

The studies of primate evolution have been developing throughout the years and now scientists are able to compare and contrast between several types of primate groups. One notable primitive characteristic that non-human primates and human primates have retained is the development and evolution of their dentition. Due to primates having long growth periods, scientists are able to research how primates have different dental characteristics and specializations in modern time (Larsen, 2008). By analyzing teeth, scientists are able to determine several factors, such as similar dental formation, growth, development, and diet preferences (Larsen, 2008).

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.

Primates are one of the most interesting mammals on earth, not only because of their complex social structures, but because they hold so many similar characteristics to humans. Primates are often cited as our closest living relatives and on two separate occasions I observed four separate species of primates at the San Diego Zoo that can justify their use of their physical characteristics and behaviors that may be similar as well as different to the other primates and ours.

They are very fast and can be able to run within short distances using the most minimal time. It takes less than 10 seconds to run within a distance of approximately 100 meters. While the animals move around they try to monitor the environment as quadrupedally and monitoring of the environment can be able to take as much as up to ten minutes in any case they have doubts of where they are, this alerts them of any predators. Consortship is a situation where the two animals would stay close to each other and monitor the movement and environment of each other. This is done as long as the animals are out in an environment that is not seen as being friendly. The patas can be seen to be less vocal and they move around in silence, they make certain noise only once when they have seen a predator. The noise or the sound takes just a few seconds as long as the danger is taken away

I have really enjoyed learning in this class and glad I took it because I found it to be very interesting. From learning all these different types of primates, from non-human to human primates, to even developing a better understanding of the evolution of primates and primate behavior. For my final paper, I will be going over and portraying the behavior of non-human primate and human primate. I will be comparing the primates behavior seen over the movies and literatures that we were assigned, to the understandings of evolution. Being able to learn and compare the behavior of non-human primate and the behavior of human primate, it can help further one understandings of how we are similar in physical and biological structures. According to the Wikipedia, “The primate lineage is thought to go back at least 65 million years ago”. (Wikipedia) With this one could say that the evolution of primates have been evolving for quite a while now, and even if we do not look like a non human primate we are similar than we think. The reading materials and the movies we had to watch for this class displayed the behaviors of non-human primate and human primate, some how differed. There are many question about evolution, and to how we were created? are there other reasons deeper than evolution? How much can we learn about evolution by just comparing the different behavior of the 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.

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.

During my research of Orangutans and Mandrills I observed them in captivity at the San Diego Zoo. My observations included a 20 minute observation of each primate as it cohabitated with other Primates and with other members of its own species. My findings will support the research of Orangutans and Mandrills through firsthand observations.

Non human primates’ social organization can provide useful information how human social evolution occurs. We will go over main points of how similar and different non human primates such as chimpanzees, orangutans, and gorillas’ society are compared to ours, humans.

Within this essay, we will study more in depth the behavioral as well as physical traits of two primates at a zoo from their interaction with their peers to their place in the group. This observation would enable us to further understand the possible existing correlation between humans and primates. First, I studied a female chimpanzee with her baby, and then, a dominant male gorilla, in San Francisco Zoo at about noon, on May 23, 2015, for an hour each. Even though they share some similarities such as having a large brain, living for a long time, and being bored in their enclosure, they are still different; when gorillas are the largest, chimpanzees are the smartest. In fact, chimps use tools to catch food, they would not be able to reach

Isbell and Wright’s articles both focus on monkey species and their native environments, Africa for Isbell’s (1994) vervet Old World monkey and South America, Peru area, for Wright’s (1994) owl and titis monkeys. The articles main focus is the relationship between these monkeys and their natural predators. Focusing on how the predator aspect of their lives is determined by their environment and adaptations they make to ensure survival. Isbell’s Vervets Year of Doom focuses more on the adaptations that was forced upon the vervets’ because of their changing environment, the death of fever trees. While Wright’s Night Watch on the Amazon focusses more on how the primates way of life affects their relationship with predators and the likelihood of attacks. Both articles have similar aspects however the species way of life, specifically their environment and sleep schedule, are quite different as well as the authors way of observing and studying the primates within their habitats.

The primates species that I observed were the Bornean orangutans and the Sumatran orangutans. There were three adult females. one adult male, and one infant female. The orangutans were observed at San Diego zoo’s ape webcam on April 26, 2106.

     I think that if culture is defined as learned behavior, than it is reasonable to say that primates posses a form of culture. Primates have been observed making tools to aid in collecting food and developing communication system, both of which are learned behaviors.

The animal I have chosen to study is the Japanese macaque, more commonly known as the Japanese snow monkey. Sir David Attenborough recently described the macaque as “one of the most successful and versatile of all primates”, commending its capacity to be “versatile, resilient, enterprising, tough and capable of surviving in extreme conditions”. This essay will continue by examining the Japanese macaque in a number of ways. Firstly, I will describe the physical characteristics of the animal, paying particular attention to the way in which their appearance has adapted to enable them to dominate in their habitat. Secondly, I will discuss the environment in which the macaques live in and the unique capabilities they maximise to develop a