![]() Prior to the four-year war, before it became a national park, Gombe Stream National Park was known as the Gombe Stream Research Centre. ![]() The victorious Kasakela then expanded into further territory but were later repelled by two other communities of chimpanzees.īackground Feeding station where Goodall would feed the Gombe chimpanzees The Kasakela was left with eight adult males, twelve adult females and their young.ĭuring the four-year conflict, all males of the Kahama community were killed, effectively disbanding the community. The separatists consisted of six adult males, three adult females and their young. Over a span of eight months, a large party of chimpanzees separated themselves into the southern area of Kasakela and were renamed the Kahama community. By 1974, researcher Jane Goodall noticed the community splintering. The two groups were once unified in the Kasakela community. The Gombe Chimpanzee War, also known as the Four-Year War, was a violent conflict between two communities of chimpanzees in Gombe Stream National Park in the Kigoma region of Tanzania between 19. "The more we learn about chimpanzee aggression and factors that trigger lethal attacks among chimpanzees, the more prepared park managers and government officials will be in addressing and mitigating risks to populations particularly with changing land use by humans in chimpanzee habitat," explained Morgan.Class=notpageimage| Location within Tanzania We found human impact did not predict the rate of killing among communities. "In reality, however, human disturbance can occur along a continuum and study sites included in this investigation spanned the spectrum. ![]() "Wild chimpanzee communities are often divided into two broad categories depending on whether they exist in pristine or human disturbed environments," explained Morgan. The key findings indicate that a majority of violent attackers and victims of attack are male chimpanzees, and the information is consistent with the theory that these acts of violence are driven by adaptive fitness benefits rather than human impacts. In all, data included pattern analysis of 152 killings by chimpanzees. "A key take-away from this research is that human influence does not spur increased aggression within or between chimpanzee communities."Ī team of 30 ape researchers assembled extensive data sets spanning five decades of research gathered from 18 chimpanzee communities experiencing varying degrees of human influence. Morgan has studied chimpanzees deep in the forests of Republic of Congo for 14 years. "Humans have long impacted African tropical forests and chimpanzees, and one of the long-standing questions is if human disturbance is an underlying factor causing the lethal aggression observed," explained co-author David Morgan, PhD, research fellow with the Lester E Fisher Center for the Study and Conservation of Apes at Lincoln Park Zoo in Chicago. If we are using chimpanzees as a model for understanding human violence, we need to know what really causes chimpanzees to be violent," said University of Minnesota researcher Michael L. ![]() "This is an important question to get right. The study began as a response to a growing number of commentators claiming that chimpanzee violence was caused by human impacts. New research from an international coalition of ape researchers, published September 18 in the journal Nature, has shed new light on the subject, suggesting that human encroachment and interference is not, as previous researchers have claimed, an influential predictor of chimp-on-chimp aggression.
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