gather for the hunt, and then attack the most vulnerable, chimpanzees tend to show excessive violence against other groups, until the killing of unrelated individuals. One possible reason? Competition for food and conquest of new territories.
Even Jane Goodall described the scene, mostly male chimpanzees gather to explore the boundaries of their territory, systematically encroach on the territory of other groups and attacking and killing people they encounter, until complete annihilation of the other group , conduct a ferocity rare in the animal kingdom. According to research published in the journal Current Biology behind this behavior is a very precise order, conquer new lands and resources.
For their research primatologists have observed chimpanzees in the Kibale National Park in Uganda. The group of chimpanzees Ngog consists of 150 individuals, a group extraordinarily large.
The researchers were able to document 18 campaigns of "war" against groups of chimpanzees who live nearby. In each of these attacks has killed at least one animal group opponent.
About two killings in the course of a year can seriously affect a small group of chimpanzees, whose average number is around 20 individuals.
attacks always occur in a similar way, up to thirty individuals Ngog, the vast majority are by males, but females are also seen, pounced in foreign territory, in search of weaker individuals, especially females with their young children or individuals. In one case it was observed that the group of attackers tried for more than half an 'hour to rip a baby from his mother, mortally wounding him.
now it was completely unclear why the chimps show this attitude, it took something like envy or struggle for resources, but the current research has shown that the winning team actually took possession of the territory freed, both unrelated individuals were all killed, or who choose to retire permanently. The large group of Ngog with this tactic of intimidation has succeeded in expanding its territory in past years to 22 percent.
Bibliography:
Mitani, JC, WATTS, DP & Amsler, SJ (2010): Lethal intergroup aggression leads to territorial expansion in wild chimpanzees. Current Biology, Vol 20 (12): R507-R508 doi: 10.1016/j.cub.2010.04.021
Even Jane Goodall described the scene, mostly male chimpanzees gather to explore the boundaries of their territory, systematically encroach on the territory of other groups and attacking and killing people they encounter, until complete annihilation of the other group , conduct a ferocity rare in the animal kingdom. According to research published in the journal Current Biology behind this behavior is a very precise order, conquer new lands and resources.
For their research primatologists have observed chimpanzees in the Kibale National Park in Uganda. The group of chimpanzees Ngog consists of 150 individuals, a group extraordinarily large.
The researchers were able to document 18 campaigns of "war" against groups of chimpanzees who live nearby. In each of these attacks has killed at least one animal group opponent.
About two killings in the course of a year can seriously affect a small group of chimpanzees, whose average number is around 20 individuals.
attacks always occur in a similar way, up to thirty individuals Ngog, the vast majority are by males, but females are also seen, pounced in foreign territory, in search of weaker individuals, especially females with their young children or individuals. In one case it was observed that the group of attackers tried for more than half an 'hour to rip a baby from his mother, mortally wounding him.
now it was completely unclear why the chimps show this attitude, it took something like envy or struggle for resources, but the current research has shown that the winning team actually took possession of the territory freed, both unrelated individuals were all killed, or who choose to retire permanently. The large group of Ngog with this tactic of intimidation has succeeded in expanding its territory in past years to 22 percent.
Bibliography:
Mitani, JC, WATTS, DP & Amsler, SJ (2010): Lethal intergroup aggression leads to territorial expansion in wild chimpanzees. Current Biology, Vol 20 (12): R507-R508 doi: 10.1016/j.cub.2010.04.021
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