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Transcript of Bornean Orangutan
Ancestors & Relatives
They are close relatives to the Sumatran Orangutan. They evolved from the
, a primate that dates back from 23.7 to 5.3 million years ago.
Britney Le & Kaylee Kennedy
The Bornean Orangutan lives in Indonesia and Malaysia on the islands of Sumatra and Borneo. Thousands of years ago, they lived in Java, China, and Vietnam.
Baby orangutans have orange-red hair and long arms. They have some bald places and not as much hair.
The adult orangutan has much more hair than the younger ones. Males have large throat pouches. Bornean orangutans have broader faces than other types of orangutans.
Adolescent orangutans have more hair than it had when it was a baby. They have grown a darker color of fur too, from when they were babies.
The height of a normal Bornean Orangutan is 3.3-4.6 feet tall. Most of them weight from 66-220 pounds.
They are located in Southeast Asia in the rainforests of Sumatra and Borneo.
The female orangutan can be between 5.8 to 11.1 years old to reproduce. They can produce 1-2 offspring a time.
The orangutan's long arms help them climb through the tree canopies. Their arms are 7 feet long. These long arms help them swing around branches and support their weight.
African Wild Dogs
When male orangutans are about 15 years old, they develop large cheek pads, which female orangutans apparently find attractive
They have opposable thumbs which means they can touch each of their fingers with their thumb like humans.
The name “orangutan”means in English as “man of the forest”.
The average orangutan, in the wild, can live up to 35 to 45 years old.
Mutualism is a relationship between different species and they both benefit each other.
Commensalism is a relationship between two different organisms when one of the organisms is benefited and the other is not benefited or harmed in anyway.
Parasitism is a relationship between two organisms where one benefits from the other while the other organism suffers.
Symbiotic Relationships with the Bornean Orangutan
They have a parasitism relationship with the leopard because they hunt for orangutans and get food by killing them.
They have another parasitism relationship with carpenter ants because the orangutan eat them for food.
One reason they are endangered is there are a lot of plantations and farms near their habitat and if they are caught in the farm then they must be shot.
Another reason is that they are in illegal pet trades. This can decrease the populations of wild Bornean Orangutans because they reproduce slowly.
Up to 8,000 orangutans died from the 1997-98 forest fires in Kalimantan.
They were first classified as endangered in 1990.
The population size of the bornean orangutan is about 45,000 - 69,000 and they are decreasing.
The World Wildlife Foundation is working with wildlife trading monitoring networks to help the government enforce trading regulation laws. They are trying to get more rangers, prosecutors,and officers to enforce wildlife crimes.
They are also working with farmers, local people, and plantation owners to help get their agricultural areas as far away from the orangutan's habitats.
Organizations like the World Wildlife Foundation and the Borneo Orangutan Survival Foundation are trying to bring recovery efforts to help them out.