Eat prey first! Chimpanzees predatory behavior helps to reveal human evolution.

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 Eat prey first! Chimpanzees predatory behavior helps to reveal human evolution.


According to foreign media, a new study shows that apes prey not only in a variety of ways, but some of them are quite shocking. Chimpanzee, for example, eats their brains first when they eat subadult (i.e., immature animals, such as infant, juvenile and underage) prey. But when chimpanzee eats adult prey, it rarely presents such a feeding pattern. Biologists say studying these predatory behaviors helps to understand the evolution of early humans. Photo note: a male chimpanzee is eating a red wart monkey in the Gong Bei National Park, Tanzania. (Figure / Ian Gilby) Chimpanzee is looking for their prey, and a fight is about to start. The hidden camera recorded this scene: the monkeys who had been frightened by the trees fell off accidentally, and chimpanzee seized the opportunity to catch them. Ian Gilby, an anthropologist at Arizona State University, is also the leader of chimpanzees new research. Gilby secretly photographed some of the chimpanzee lives of the kataba population in the Kambe region, and he wanted to take a deeper study of the meat habits and characteristics of chimpanzee. Looking back on the video, Jill noticed that chimpanzee eats their brains first when they eat a subadult (an adult animal, such as a baby, a baby, and a minor). Gilby also found that chimpanzee rarely showed such a feeding pattern when eating adult prey. This phenomenon has aroused Gilbys curiosity, which may have a potential connection with human evolution. Why do apes prefer to eat certain parts of their prey first? Take the brain as food Gilby thinks this behavior is related to nutrition acquisition. In our eyes, meat is meat, we tend to generalize, but we also know that different parts of the nutritional composition of meat is also different. The body of the whole prey is naturally nutritious, but the nutrition of the brain is especially large. Gilby said. Gilbys research is published in the recently published international journal of primate zoology. The brain is not only rich in fat, but also a source of long-chain fatty acids, which promote neurodevelopment. Photo note: a chimpanzee caught a young red wart during hunting. (Figure / Ian Gilby) Chimpanzee can easily crush the young monkeys head, but its not easy to crush the brain of an adult monkey. If chimpanzee takes a bite - head strategy for adult monkeys, the prey may not be killed, and they are likely to escape, so the success rate of chimpanzees hunting will fall. Therefore, when chimpanzee hunts adult monkeys, they use a more efficient feeding sequence to eat nutritious organs, such as the liver. The chimpanzee in the Gong Bei area will hunt their adult trunk when they are hunting their adult trunk. This may be one of the earliest quantitative studies on how chimpanzee eats its prey, says Jill Pruz, a bioanthropologist at Texas State University who specializes in primate biology. For nutrition or simple tradition? Prumics, at the Fongoli research base in Senegal, studied the hunting behavior of chimpanzee in the tropical prairie, where she has seen similar eating behavior, where chimpanzee preys on the young bushes and eats his head first. There are also arguments and questions in the academic community. Although chimpanzee is a omnivorous animal, meat is not the main food of chimpanzee, so why do they have to hunt? He supported a hypothesis that chimpanzee was seeking nutrition, but she also said the hypothesis could not explain the discrepancy of all research bases. It is the cultural tradition within the group and the tradition learned by internal members. In addition to predation, researchers have discovered a strange phenomenon. In January 30, 2017, a concealed camera recorded a rare video footage showing the murder of a chimpanzee. The scene is shocking, a chimpanzee was murdered, its body was beaten, blood and even dismembered, and the tragic maker was a group of chimpanzee, and the injured chimpanzee was the leader of the population! This video records the fatal outcome of chimpanzees social politics. Since 2005, researchers have been watching a group of chimpanzee in Senegal, who identified a chimpanzee called Foudouko, which was the first leader of the population. Two years later, Foudouko fell from the high platform of power. It was overthrown by a group of younger male chimpanzee. Around June 2013, Foudouko tried to return to the ethnic group. Before that, it lived near the periphery of the group for several years. Finally, Foudouko was killed by his former followers. It is very rare that a chimpanzee is killed by its own group. Although this example is not obvious in relation to predation, it may also provide some information for early human evolution in the future. Meat drives evolution? The study of chimpanzees meat diet is also meaningful, regardless of the reasons for many of these behaviors, and chimpanzee may have a common ancestor with humans, so these studies may help us to understand the evolution of human beings. Gilby said chimpanzee, a species that caused early humans to start eating more meat, said his study suggested that the motivation for meat eating might be to get fat. We need to take chimpanzee as an important research object. This is one of the best ways to understand early humans. The more clear the study of chimpanzee predation is, the better we can assume earlier human behavior. He said. Source: NetEase science editor: Guo Hao _NT5629 Meat drives evolution? The study of chimpanzees meat diet is also meaningful, regardless of the reasons for many of these behaviors, and chimpanzee may have a common ancestor with humans, so these studies may help us to understand the evolution of human beings. Gilby said chimpanzee, a species that caused early humans to start eating more meat, said his study suggested that the motivation for meat eating might be to get fat.