Bornean Orangutan

I primarily observed three orangutans, one male, one female, and one juvenile, of Sumatran and Bornean descent, scientifically known as Pongo abelli and Pongo pygmaeus, respectively, and to a lesser extent, two gibbons known as siamangs, or Symphalangus syndactylus. These primates share the same enclosure in the San Diego Zoo in California. I observed the orangutans from 12:58 P.M. to 2:00 P.M. CST on September 19th. During this time frame, the three orangutans mainly stayed high up in their man-made structures, consisting of multiple metal bars covered with nets, ropes, and hammocks. The female and juvenile orangutans stayed above ground from 12:58 P.M. to 1:31 P.M., and again from 1:48 P.M. until 2:00 P.M, approximately 45 minutes. During

Orangutans have long lifespans (30-40 years) with long interbirth intervals and low reproductive rates. In fact, females have eight year intervals between births and will only give birth to one or two offspring in her lifetime. The reason why this poses a problem is that when an enormous amount of orangutans are killed, it’s tough to recover because they are not producing large numbers of children nor do they have short interbirth intervals. Consequently, there will be extremely high death rates and very few births (UNEP, 2007). Their population numbers will continue to fall because they won’t be able to compensate for the great loss. A study completed by Michael Bruford and Benoit Goossens at Cardiff University showed that in 1900, there were approximately 315,000 orangutans in Indonesia. Currently, there are about 60,000 orangutans living in the forests of Indonesia, which is a massive population decline (Kaye, 2016).When orangutans are driven out of their habitat due to deforestation and illegal logging it forces them to roam a great distance in search of food. Orangutans are solitary creatures, spending the majority of their time in the trees. Their diet relies mainly on fruit, with a preference for fruit with soft pulp. They also eat buds, flowers, leaves, soil tree bark, and some insects. Due to their largely frugivorous diet, they have to monitor the seasonal availability of resources. When fruit is abundant, they will increase their food intake and store the food as fat for energy. This enables them to eat low quality food items in habitats where fruit may be scarce (Delgado & Van Schaik, 2000). The dipterocarp forests of Borneo and Sumatra have trees that fruit simultaneously, so there is an abundance of fruit once every 2 to 5 years which are known as the “mast years”. During the other years there is not as much fruit, so orangutans have to maintain large home ranges in

The other adult female that would be my focal point did emerge but remained less social and more timid than the other orangutans but was also younger. The orangutans as supported by San Diego Zoo Orangutan website would use all four limbs to move about the trees and would occasionally walk on the ground bipedally and using its long arms for support. One of the more curious observations was the interaction between the non-human primates and the humans which seemed to stem of curiosity on both sides. For instance at one point before the focal observation an adult human female with her infant were tapping on the glass of the enclosure and the adult human female began to pull things from her purse and show it to the orangutan who was leaning on the glass barrier; among many of the items was a bag of chocolate candies which the orangutan did not particularly respond to. The eldest adult female orangutan however seemed to respond very curiously and attentively to any infant or child that approached the enclosure.

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

The Orangutan, scientific name being Pongo pygmaeus, genus pongo, is one of the Great Apes. It comes from the phylum Chordata. They are classified as Mammalia, in the Animalia kingdom. They belong to the Hominidae family, of the Primate order . During my search I could not find a concise source that stated the closest living relative to the Orangutan, though many stated that it was Humans due to the 97% similarity between our DNA .

The orangutans differ in hand size, Herald had much larger hands than my own and Taylor’s hand size was around the same size as mine. Their hands display the thickness of the fingers and knuckles, which is more likely explained by their fist walking attributes.

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.

One thing I like about the orangutans is their social behavior. For instance, when the adult females finished eating, they would get together and hug and show affection towards each other. Also, the infant and the adult females were always curious to see humans and birds; they would try to interact with them. In addition, I really enjoyed watching one of the female orangutans treat the infant as if it was her own child. In contrast to the female orangutans, the male orangutan was solitary. He spent

Orangutans (Figure 3) are our first cousins since they share 97 percent of our genetic material. Contrary to other apes, orangutans are semi solitary which is unique in its social organization (3). Adult males which are the most solitary, and they associate with only their current, former, and potential consorts. For the semi-solitary orangutans, the only playmate is its mother. Even female adults are more social than male ones, rarely they groom, touch, hold hands, chase, or fight. On rare occasions, female adults may groom; however, it lasts only few seconds. Sometimes, female adults meet and travel with one another to express the close relationship. The long call by a male orangutan expresses an alert to others about his presence. Usually, other orangutans only react if the call is close by or aggressive towards them. Male orangutan can use vocalization to express that he is angry and frustrated, and that call signals a threat to another male (3). Female orangutans also produce vocalization when they get upset by the presence of another male.

Monkeys and humans have been compared for years, we have all heard the expression “Monkey see, Monkey do”. Analyzing individual primates at the Santa Ana Zoo was quite an experience because when I use to hear monkeys I use to only picture one certain appearance and that was a brown monkey with a light brown face, and a long tail. Moneys are not just monkeys, humans aren’t just humans, and apes aren’t just apes they are all primates which is a mammal that has certain characteristics such as: flexible fingers and toes, opposable thumbs, flatter face than other mammals, have eyes that face forward and spaced close together, large and complex cerebrum, and they are also social

The primary message this page wants to address is that humans are very similar to other primates because humans are primates as well. Many of the similarities can be seen in appearances and genetic code though their behavior is a lot more similar than some would think. The page also wants to convey that it will address some of the ways that human and other primates are similar and different.

Primate conservation has long been a topic of debate, reliant most heavily on the struggle to provide the necessary resources to combat the declining rate of population growth among various species. Orangutans in particular, both Sumatran and Bornean, have experienced a rapid drop in their free-living populations. With an estimate of only 27,000 left in the wild, questions have been raised over what selective pressures are impacting the steady decline of these animals existence. While hunting and poaching have been identified as contributing factors, habitat loss primarily takes center stage in their demise. Conservation efforts have been made and continue to be somewhat successful, however, challenges and set backs continue to threaten

For the Orangutan in the zoo each enclosure they had a total of three orangutan in each pen, most were all adults, except one which was a young juvenile. As well as it is appear to be that none of these orangutan are a part of a subgroup because some, if not all isolated themselves from others. In which is very common according to Lang C. (2005), "Adult males and independent adolescents of both sexes range alone while adult females range with their dependent and weaned offspring" (Primate Factsheet pongo, para. 1). So the zoo's orangutan act very similar to the wild ones. Next the differences is how are they physically built between in each others. For the orangutan, if they are standing they are about 5 feet tall, however including arm and leg span due to how they are built to climb and swing to places their body size will be seven feet tall. Another difference was that they had no tail due to they ancestors evolution to who they are now, which remove the chance of having the ability to have a prehensile tail in the process. The last physically difference is their hands. They have all fingers and thumbs, but they don't use their thumbs to grab; they use mostly their fingers to grasp objects. Which make them who they are

According to my observation, even though Chimpanzee, and Gorilla are similar, they differ in many other ways when we go deeper in physical, and behavioral traits. However, both species also share the majority part of their DNA with Humans. Based on some reliable researches, some scientists realized that humans did not come from apes but instead shared common ancestors. As a matter of fact, humans and Primates are different, but share most of their genome, explaining why we found some similar patterns of behavior among humans, and

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,