Left: Pictures of Fibraurea tinctoria leaves. The length of the leaves is between 15 to 17 cm. Right: Rakus feeding on Fibraurea tinctoria leaves (photo taken on June 26, the day after applying the plant mesh to the wound). Scientific Reports (Sci Rep) ISSN 2045-2322.
Nature’s Ingenious Healers
In a new study documented in the lush rainforests of the Gunung Leuser National Park, Indonesia, a male Sumatran orangutan has been observed applying a biologically active plant to a facial wound. This intriguing behavior not only showcases the intelligence of orangutans but also opens new avenues in understanding the evolutionary origins of medicine. Here’s an overview of this fascinating study, which could reshape our understanding of non-human self-medication and its implications for natural healing practices.
Intelligent Healing: Orangutan’s Use of Medicinal Plants
Researchers from the Max Planck Institute of Animal Behavior and several Indonesian institutions captured a rare and enlightening behavior exhibited by a male Sumatran orangutan named Rakus. After sustaining a facial wound, Rakus was observed selecting, chewing, and applying leaves from the Fibraurea tinctoria plant—commonly known as Akar Kuning—directly onto the wound. Over several days, he applied the masticated leaves and juice, effectively managing his injury.
Process of wound healing. Rakus fed on and later applied the masticated leaves of Fibraurea tinctoria to his facial wound on June 25. On June 26 he was again observed feeding on Fibraurea tinctoria leaves (see photo). By June 30 the wound was closed and by August 25 was barely visible anymore. Scientific Reports (Sci Rep) ISSN 2045-2322.
Fibraurea Tinctoria: Nature’s Pharmacy
Akar Kuning is not just any plant; it’s a cornerstone of traditional medicine in Southeast Asia, renowned for its analgesic, antipyretic, and anti-inflammatory properties. The study highlights the presence of furanoditerpenoids and protoberberine alkaloids in the plant, compounds known for their antibacterial and healing capabilities. This suggests that Rakus’s choice of treatment was not coincidental but driven by an intrinsic understanding or learned behavior regarding the plant’s medicinal benefits.
Implications for Human and Veterinary Medicine
This behavior documented by the research team is among the first systematically observed case of a wild animal using a biologically active substance for wound treatment, providing invaluable insights into the potential origins of medicinal practices among humans.
Active wound treatment among great apes was only recently observed for the first time outside of the Sumatran orangutan. In Loango National Park, Gabon, researchers documented chimpanzees from the Rekambo community using insects as a form of medication. These chimpanzees applied insects to their own wounds and those of their peers, with nineteen instances of self-treatment and three instances where they treated other members of their community. This behavior provides further evidence of the sophisticated self-medication practices that exist within the great ape species.
The findings could have significant implications not only for understanding animal behavior but also for veterinary and even human medicine, offering natural alternatives or complements to synthetic drugs.
Evolutionary Perspectives on Health
The observation suggests that the use of medicinal plants is possibly an evolved trait among great apes, indicating that such practices could date back to common ancestors shared with humans. This behavior demonstrates a complex level of cognitive function and environmental awareness, suggesting that orangutans might be capable of health management practices that have evolved independently but parallel to human developments.
Future Research and Conservation Efforts
The study underscores the importance of continued research and conservation efforts in the habitats of orangutans. Understanding their behavior and environment not only helps protect these intelligent creatures but also aids in preserving the rich biodiversity of the rainforests, which holds untapped potential for medicinal discoveries.
Summing Up
The self-medication behavior exhibited by the Sumatran orangutan opens up new dialogues in both the scientific community and public sphere about the cognitive capabilities of non-human primates and their conservation. As we delve deeper into the natural world’s secrets, such studies are pivotal in bridging the gap between human and animal health practices, emphasizing the interconnectedness of all life on Earth.
By promoting awareness and fostering research in these critical areas, we can better appreciate our closest living relatives’ sophisticated behaviors and the natural resources that our planet has to offer. This study is not just a testament to the intelligence of orangutans but also a call to action for conservation and respect for wildlife and their natural habitats.
For International Orangutan Day, Mongabay spoke with Leif Cocks, founder and president of The Orangutan Project, which seeks to protect the endangered orange-haired primates and their rapidly disappearing habitats in Southeast Asia.
All three species of orangutans — Sumatran (Pongo abelii), Bornean (P. pygmaeus) and Tapanuli (P. tapanuliensis) are one step away from extinction.
Deforestation is the biggest threat the primates face, and at the moment most conservation efforts have only been able to slow forest loss, not turn the tide around, Leif told Mongabay.
Oil palm plantations replacing primary rainforests is a major problem in Malaysia and Indonesia, but Cocks says simply banning these plantations is not the answer; instead, he advocates for replacing exploitative production systems with those that recognize the services that these forests provide to the local communities and building on that.
To some humans, the idea of treating an orangutan as a person is absurd. For Leif Cocks, spending billions of dollars to find life on Mars while living beings are driven to extinction on Earth is what is truly incomprehensible.
Cocks, the founder and president of The Orangutan Project, spoke to Mongabay ahead of International Orangutan Day on Aug. 19. From his time as a zookeeper in Perth to his years mingling with the orange-haired primates in Indonesia’s rainforests, his belief in their sentience has only deepened. In 2015, he took the stand at an Argentinian court to support treating an orangutan named Sandra as a person. The court agreed, recognizing Sandra’s rights to life, freedom and to be kept safe from harm.
However, for Sandra’s peers in the wild, their very right to exist remains in jeopardy. All three species of orangutans — Sumatran (Pongo abelii), Bornean (P. pygmaeus) and Tapanuli (P. tapanuliensis) — are critically endangered, or just one step away from extinction. There are fewer than 800 Tapanuli orangutans in the world, found in an area about the size of Los Angeles.
Orangutan in Malay means “person of the forest.” But the forests they call home in Southeast Asia are being hacked down incessantly. Bornean orangutans are native to the island of Borneo, which is divided between Malaysia, Indonesia and Brunei. Sumatran and Tapanuli orangutans live on the neighboring Indonesian island of Sumatra. In 2019, 324,000 hectares (801,000 acres) of primary forest was destroyed in Indonesia, much of it cleared to make way for palm plantations. Deforestation is the biggest threat the primates face, Leif told Mongabay.
Baby orangutans are frequently kidnapped to be sold as pets. In the process, many are orphaned, depriving them of a necessary initiation into the wild. The mother-child bond is a pillar of orangutan society. Young ones spend three to four years learning the ropes from their mother. Like humans, orangutans are known to be self-aware, able to recognize their own face in a mirror. Where they outdo humans is in their ability to move their legs like humans can only move their arms. They also sport opposable thumbs on their feet that allow them to latch onto branches in a signature spread-eagled fashion. They are true acrobats of the treetops, where they spend most of their time, nesting in beds of branches and leaves, safe from predators like mighty tigers, lithe leopards and slithery crocodiles that still roam the rainforests of the Greater Sunda Islands.
Below are excerpts from a conversation with Cocks, condensed and edited for clarity.
Mongabay: Do you remember the first time you came across an orangutan?
Leif Cocks: I was brought up in Southeast Asia and spent my early years in Hong Kong. Back in the ’60s, it was common for wild animals to be kept as pets in Asia, I remember seeing people with pet orangutans. But the first time I got to know orangutans in a deeper sense was while working with 15 of them at a zoo in Perth.
From my perspective, orangutans are persons, self-aware beings with feelings, hopes and aspirations for the future, anxieties about the past. Apart from it being an environmental and economic catastrophe that we are destroying their rainforest home, they deserve not to be killed and destroyed and driven to extinction in the most horrific ways we can imagine. It became my life’s work to save them.
What do you think the relationship between humans and orangutans should be? How can the interests of both be served?
Both interests would be best served if all orangutans live free in wild and secure habitats. The best situation for orangutans is also the best-case scenario for us because the rainforest mitigates global warming, creates rain and provides regular water supply and environmental services that allow agriculture to prosper. By preserving orangutans and their rainforest home, we not only do what is the best thing for them, but we also provide the best sustainable future, both environmentally and economically, for the local communities and the entire planet.
What are the biggest threats to the survival of orangutans today?
It is unsustainable agricultural practice that is the biggest challenge that orangutans face. There are other significant factors too. But the disappearance of habitat, the permanent conversion of their rainforest home into unsustainable monocultures is the biggest problem. Illegal logging and illegal poaching are significant too, but once the rainforest is gone, it’s gone. There’s no hope for recovery.
Do you believe that oil palm plantations are viewed with the same skepticism by local people as they are by some Western observers?
It is probably about education and a sense of understanding. Because all monocultures are unsustainable by their very nature. Monocultures will destroy the environment that they’re in. That’s just science. They are very good at doing two things: squeezing the profit from many years into a few short years before they destroy the habitat, and reducing the profit from the many to the few.
Polyculture and agriculture, which includes mixed plantations with natural vegetation, can be sustainable, and provide maximum long-term income to the maximum number of people. We have a choice. Do we want a few people to get very rich quickly? Or do we want agriculture that supports economies that maximize sustainable profit for the maximum number of people?
Forest cleared to make way for a palm oil plantation in Indonesia. Image by Rhett A. Butler/Mongabay
You have spoken about how we are passing on the true cost of production to people who can’t afford to pay for this kind of economic activity. Why do you say that?
For example, if there’s a rainforest and the local community is making a living off the rainforest. They gain timber products, and their economy is based on the rainforest. But it’s also doing other things, what we call the environmental services. The rainforest is like a big sponge; when it rains, the water is absorbed, and when it’s not raining the water is let go. In a rainforest, you have rivers that flow year-round despite rainfall being intermittent.
Destruction of their habitat is the greatest threat facing these great apes, according to Cocks. Image courtesy: The Orangutan Project.
You take the rainforest away, and you put a palm oil plantation there, you have a flood that destroys the village, and then you have droughts that destroy crops. It increases the temperature in the local area, which can lead to more crops failing. The rainforest harbors predators that keep pest species under control. So all these environmental services that the rainforest provided are taken away, and the profits go to the person who put the plantation there. In the big picture, destruction of rainforest causes more global warming than all the transport systems in the world combined. It’s passing a financial cost to future generations. So, what they’ve done is they have passed the true cost to the powerless.
Orangutan on a tree. Photo by Dawn Armfield on Unsplash.
How does The Orangutan Project protect orangutans and their habitats?
It is a multifaceted project with many partners. Our vision is to save up to eight complete ecosystems of the right type, shape and size of rainforest where orangutans can survive with the other megafauna like tigers, tapirs, monkeys and elephants, survive the extinction crisis. We are supporting companies and foundations to get the land and manage it and piece together functioning ecosystems.
We’re also working with the local communities to develop the agricultural systems that I mentioned before like dragon’s blood, a dye derived from vines that grow underneath the rainforest canopy, vanilla production and honey production. These are a couple of examples of agricultural systems that can be created under the rainforest canopy with the local communities. We have shown that within seven to 10 years, we can leave these viable, functioning ecosystems not only environmentally sustainable but economically self-sufficient. The local communities get wealthy and prosper. And there’s enough surplus money to pay for the protection and security of the ecosystem.
Is there a successful approach that you would like to highlight either from within your organization or from outside?
The first thing I have to say is simplistic solutions are great for marketing and fundraising, but they don’t really work in the real world. Let’s say we say “let’s ban palm oil.” That seems good. Like you see a rainforest, and then it disappears, and a palm oil plantation is now there. So the logical conclusion would be if we stopped palm oil, we will stop the rainforest from disappearing. But it doesn’t really address the issue. The person destroying the forest isn’t a palm oil person; he is a person seeking to make money. The trees are worth a lot of money. They’ll destroy the rainforest just for the value of the trees, and there is more than one unsustainable form of monoculture that can replace the rainforest.
So let’s say you weren’t allowed to plant palm, you can put paper on it, you could put a rubber plantation there, you can put a coconut plantation there. You may not make as much money, but it is still profitable, still worth destroying the rainforest. If you address one commodity, you’re not going to make a meaningful change because you’re not really affecting the driver.
People want me to say, “look, this community education program achieved great things,” or “the rangers have achieved great things.” But to have a meaningful impact, it’s always a lot of different things in the right dosage, with many partners putting their skills together.
If somebody wanted to look for examples where this multisectoral approach is working, where should they look?
In general, at least for orangutans, it is hard to pick out, because we’re losing at the moment. Even the well-run projects are reducing habitat loss. So in the next 10 years, we are really in the process of having to go from reducing the rate of destruction to stopping it and expanding reforestation and protection. Some people are doing some fantastic work, but once you look into it, they’re still losing, they’re just losing less. We really haven’t turned that around.
Do you have a wish list of three things that you’d want done immediately to be able to save the orangutans and their habitats?
I think one is funding, that seems to be the most limiting factor. Not enough money to do the work. Number two is removing special interests from political decision-making. This is not unique to Indonesia and Malaysia and the orangutan world. Businesses donate and influence a government to make decisions that benefit them at the expense of decisions that may benefit the entire community or country.
The third would be developing economic systems where the true cost of production can’t be passed on to the powerless. So the costs of environmental services that are lost in rainforest destruction are paid by taxes, or given to the local community, which have lost those services.
Has COVID-19 made it more challenging to do the work you do?
In the short term, it has devastated our funding. Because as people lose their jobs and feel threatened, they are less giving. People have taken the opportunity at the moment to increase poaching, increase illegal logging. The immediate short-term effect is reducing our ability to affect change from lack of money and increasing the pressure on the forests.
The long-term effect is now unknown because there’s lots of special interest groups who are trying to make the COVID-19 recovery about benefiting a few and keeping the old status quo going. But there is also at the same time a movement for a “green recovery,” this opportunity to build a better, fairer world and a sustainable world for our grandchildren. Whether we are going to go down the dark road, increasingly right-wing, increasingly nationalist, selling off more opportunities to exploitative industries, or do we move to a fairer world and a greener world? That’s the greatest challenge of our time.
Malavika Vyawahare is a staff writer for Mongabay. Find her on Twitter: @MalavikaVy
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