Long-term study shows that maternal loss is stressful for immature orphan wild chimpanzees - but only for the first couple of years
Researchers spent months observing groups of southern pig-tailed macaques
In the Bolivian Tsimané, who supports who is affected by physical size, social status, and existing cooperative and antagonistic relationships
Max Planck Institute for Evolutionary Anthropology
Deutscher Platz 6 04103 Leipzig e-mail: eco_sec@eva.mpg.de
