A primatologia found in chimpanzees cultural differences in catching termites

A primatologia has studied how chimps dig for termites, from the point of view of Ethnography, reported in Nature of Human Behaviour. It turned out that the representatives of the different communities of monkeys prefer to catch insects with sticks of different hardness, and the sets and sequences of actions which they do also varies. The differences depend on which community belong to compare apes, and no matter in what conditions they have to catch termites. According to the authors, this testifies to the cultural diversity of the communities of chimpanzees.

The common chimpanzee (Pan troglodytes) are omnivorous, and termites make up four percent of their diet. The monkeys fish out insects from termite mounds with sticks, which are specially selected for this purpose. This is an example of use of instruments animals, so it quite actively explore the primatologia and experts on animal behavior. Although the phenomenon is known for decades, until it was studied on the example of the two communities of chimpanzees. In General, complex forms of behavior investigated only 15 communities of this species, while anthropologists have studied hundreds and thousands of human communities.

Christophe Bosch (Christophe Boesch) from Institute of evolutionary anthropology of max Planck, along with colleagues compared the actions, which when fishing for termites, do 10 representatives of the various communities of chimpanzees. To do this, they analyzed 1463 one-minute videos from camera traps. The researchers treated the data separately for nests under the ground and in the trees, and took into account the differences in the habitat conditions of different groups of primates. All actions of monkeys when fishing for termites were divided into those that can be caused by environmental factors (for example, choose a stiff stick, because trees with flexible branches in this area is not, or because the mound is denser) and those that may be dictated by cultural differences (all that failed to explain from the point of view of ecology).

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