HOME >> BIOLOGY >> NEWS
Chimpanzee stone tool site excavated

l as a few centimeters.

Using archaeological methods on a non-human species, for the first time the excavations revealed new facets of chimpanzee tool behavior. Especially interesting was the excavation of Panda 100, a large tree where Hedwige and Christophe Boesch have observed for many years chimpanzees cracking nuts with different stones they transported over hundreds of meters from other Panda trees. Due to the low visibility across the rainforest floor chimpanzees have to mentally calculate all of these movements keeping transport costs to a minimum. The archaeological data show that chimpanzees collect rocks from various sources across the landscape and bring them to nut-cracking sites.

This project has confirmed for the first time that archaeology can be successfully applied to the study of past chimpanzee behavior. The distribution of remains is not random, presenting very clear concentrations of nut shells and stone remains at nut-cracking areas. The distribution of these clusters, with well defined edges, closely resemble what archaeologists understand as "activity areas". The unearthed materials include more than 4 kilograms of stone pieces and almost 40 kilos of nut-shell, and demonstrate that, like human sites, it is the repeated occupation of the same spot and the creation of large refuse accumulations that creates what archaeologists call a "site". Because the site of Panda 100 is most likely older than 100 years, this discovery indicates that nut-cracking behavior has been present in this region for many generations.

The stone remains retrieved were unintentionally produced by chimpanzees as they hit rock hammers against wooden anvils. In all, 479 stones pieces were excavated, some from a depth of as deep as 21 cm. A fascinating aspect of this discovery is that the size of the stones, the shape of flakes, and the many small pieces of debris left by chimpanzees are similar to the stones left behind by some of our early ancestor
'"/>

Contact: Prof. Christophe Boesch
boesch@eva.mpg.de
49-341-9952-201
Max-Planck-Gesellschaft
23-May-2002


Page: 1 2 3

Related biology news :

1. Chimpanzees with little or no human contact found in remote African rainforest
2. Chimpanzee virus may be key to better vaccines, study shows
3. Chimpanzee subspecies are genetically mixed and more diverse than humans, according to research in 5 November 1999 Science
4. Gladstone investigator Mike McCune wins prestigious NIH Directors Pioneer Award
5. The future of HIV therapeutics is brightening, according to Gladstone Institutes Director
6. Prions act as stepping stones in evolution
7. Oldest evidence for processing of wild cereals: starch grains from barley, wheat, on grinding stone
8. Wolf reintroduction reshapes Yellowstone ecology
9. New milestones on the path to conquering HIV drug resistance (AIDS)
10. Earstones tell fishes tale of early life in the Colorado River estuary
11. Microbes found in Mayan ruins may deteriorate stone from inside out

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/18/2018)... ... December 18, 2018 , ... CP Merritt is a national champion ... for many years however in 2006, he had a medical setback that caused him ... that he suffered from cartilage degeneration in his right rear fetlock. Such an ...
(Date:12/13/2018)... ... December 13, 2018 , ... Study Protocol Summary of ... (with Ethical e-CRF®): IGA first assessment performed at the site., 3 - Three photos ... Staff Controls Photo anonymization in BOX., 5 - Photos moved to eAdjudication® and submitted ...
(Date:12/13/2018)... ... December 12, 2018 , ... Royal Biologics, an ... has announced the launch of Maxx-Cell, the world's most advanced bone marrow aspiration ... aspirating a patients autologous bone marrow cells. Maxx™-Cell however does not require centrifugation ...
Breaking Biology News(10 mins):
(Date:1/10/2019)... ... ... was adopted from a local shelter when he was around two years old. According ... weeks after he was adopted, he tore his right cruciate ligament. Though he had ... such a traumatic injury. , Sure enough, when Rascal was about nine years old, he ...
(Date:1/8/2019)... DENVER (PRWEB) , ... January 07, 2019 , ... ... comprised of its members into Noninvasix. This represents the second investment AngelMD has ... neonatal mortality and morbidity, Noninvasix is developing a patient monitor to directly, accurately, ...
(Date:1/4/2019)... TRIANGLE PARK, N.C. (PRWEB) , ... January 04, ... ... consulting organization, is pleased to welcome Ted Hoffman to the firm. Ted will ... 20 years of experience working in and providing consulting services to the pharmaceutical ...
(Date:1/4/2019)... ... January 03, 2019 , ... Calidi Biotherapeutics, ... cancer, today announced the founding of a scientific and medical advisory board (SMAB). ... key leaders in the Immuno-Oncology field. The founding members of Calidi Biotherapeutics SMAB ...
Breaking Biology Technology:
Cached News: