Anth106 Lit Review

Gorillas are the largest group of primates and although they are known as being bipedal, similar to humans and other primates, they often use knuckle walking to move around. On observation, they have seems to have a more robust front appearance than their hind legs and behind. Their cranium is taller than other primates and lower mandible more protruding than their snout. They also have human-like ears that are parallel to their eyes and are small in size. They have

Despite a lack of scientific academic education, Jane Goodall’s work on the chimpanzees made revolutionary breakthrough in the field of understanding chimpanzee behavior. It was all made possible by her firm belief on her unconventional methods which academics in the field eyed with cynicism and felt was pointless. Such pessimistic outlook on her efforts from established academics did not blight her morale; instead she carried on with her methods of analyzing the chimpanzee population with full enthusiasm and self belief.

Goodall, J. (1971). In the Shadow of Man. Boston: Houghton Mifflin. The author’s goal in writing this book is to discuss her experiences and what she had learned from studying wild Chimpanzees. Goodall wrote this book in order to convey her knowledge of a species of animal she loves very much, so that others may become educated and join her in protecting them. She dreamed of going to Africa to see them, and was offered a job by Dr. Lewis Leakey. Goodall wanted nothing more than a chance to help. Her experiences in surrounding herself with them have completely changed the way scientists conduct field research. Whether she intended to or not, the data she has collected has debunked myths and uncovered truths about chimpanzees, while bringing more light to human behavior.

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

accommodate this strange position, we have developed a specialized pelvis, hip and leg muscles, and an S-shaped vertebral column. Because these changes can be documented in fossil bone, bipedalism is seen as the defining trait of the sub family Homininae.

1. The social structure and behavior of chimps in their communities or troops suggest many questions. What research questions might Dr. Hahn and her associates ask?

There are two ideologies about australopithecine locomotion and postcrania interpretation. As more fossils hominin remains were discovered, this debate became more focused on the bipedalism of specific groups, and less on the shift into obligate bipedalism. Stern and Susman (1991) and Latimer (1991) each represent a different side of this debate. The first holds that Australopithecus retained their arboreal features, such as powerfully built arms and the shape of the thorax, as well as developing habitual bipedalism (Stern & Susman, 1991). The second philosophical thought put out that the same features should be thought of as primitive. Those researchers argue that australopithecines were obligate terrestrial bipeds (Lovejoy, 1988; Latimer,

Chimpanzees (Figure 1) are the closest living relatives to us, and they share 99 percent of our DNA (1). Chimpanzees have distinct group territoriality. Male chimpanzees “patrol” near the boundary between the two ranges, at that time they move very carefully and quietly, and they can cease to listen and observe the range of their neighbors. Patrolling individuals are likely to face cruel and violent

In the article “Born to Run” by Adam Summers, who is an assistant professor of bioengineering and ecology and evolutionary biology at the University of California, Irvine, the author states that throughout time bipedalism has evolved to benefit endurance running. Summers also claims that bipedalism modern humans have differs from the one our early ancestors had. The author relies on the research by Dennis M. Bramble and Daniel E. Lieberman that have improved the understanding of human bipedalism and its evolution. According to Summers, the corrections made by Bramble and Lieberman’s research helped to draw a more accurate picture of an early human.

For many animals, the ability to move is essential for survival. Animals move for a variety of reasons such as: to find food, a mate, a habitat to live in, or to escape predators. It is important for animals to develop new abilities and traits to accomplish these necessities of living. Natural selection has shaped the locomotion methods and mechanisms used by moving organisms for millions of years. Generally, non-human primates are studied to garner an understanding of evolution caused by natural selection because of the many distinctive adaptations that have occurred within their taxonomic order. To understand the origin of locomotion that exist amongst primates, the two categories of primates must be analyzed to recognize morphological trait differences. Then, three major determinants can be evaluated to describe the variety of locomotor patterns primates display: the ecological niches in which the primate originates, the current inhabited niches, and the major key aspects of survival such as

I observed a type of Ape known as the Western Lowland Gorilla. The scientific name for a Gorilla is the Gorilla gorilla. Gorillas are the largest of all living primates and at native to west central Africa. Gorillas exhibit sexual dimorphism within their species because males are very obviously much larger than females. The size of the gorillas came across very intimating and gave me an off impression of what this specie was actually going to be like. While observing the gorillas I noticed that these creatures are very slow, lethargic primates. Gorillas move quadrupedally by putting weight down on their arms and knuckles as they walk. They have hands and opposable thumbs, like humans, and are able to grasp things with a better grip. When Gorillas need to reach above themselves such as for leaves or branches they are able to stand on both legs while reaching. While resting Gorillas sit on their bottoms, legs to the side in a similar position that humans do. When resting I noticed that sometimes Gorillas like to take advantage of the moment by self grooming, using their hands. Gorillas usually have an herbivore diet but eat occasional insects. Due to their large body structure it is harder for them move around quickly so they do not need to eat foods that contain as much nutrients and proteins as smaller,

Opening the documentary with scenes of chimpanzees navigating the forest while wielding rudimentary spears is quite frightening. Often, it is thought that humans are the only species on Earth that can make and utilize tools (such as weapons), and that is largely attributed to humans' advanced bipedalism. However, chimps have begun to use stripped down branches that are then sharpened by their teeth to hunt and catch a variety of prey. This means that chimps took distinct steps to create a weapon and conduct a hunt, and that can be related to humans' early ancestors and their rudimentary ways of life. This has major implications for two reasons: the first being that chimps are advancing intellectually and possibly socially as they seem to organize

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

Kavanagh, M. & Morris, D. (1983). Complete guide to monkeys, apes and other primates. London: Viking Press.

The Australopithecines were the first to walk upright, or became bipedal, although rather clumsily. Their walk was unsteady, judging by their bone structure (Figure 1.), and they most likely were quadrupedal the majority of the time. The Australopithecines had a brain about the size of an orange, high up cheekbones, and big molars. They were about three feet tall, and had small thumbs. Australopithecines, while definitely possessing some human characteristics, humans are still much closer to the chimps. Australopithecines were vegetarians; even if they knew that animals were edible, they still had no reliable means of killing animals for food. About 2 million years ago, highly evolved Australopithecines made the