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Long-term memory helps chimpanzees in their search for food
Date:10/23/2013

rs analysed which of nearly 16000 potential food trees with different crown sizes were actually approached by the chimpanzees.

Observations on one female, followed intensively over three consecutive summers, suggested that she was able to remember feeding experiences across fruiting seasons. Long-term phenological data on individual trees indicated that the interval between successive fruiting seasons, and hence the minimal "memory window" of chimpanzees required for effective monitoring activities, could vary from two months to three years.

"The present study on chimpanzees is the first to show that our close relatives use long-term memory during their search for newly produced tropical fruit, and remember feeding experiences long after trees have been emptied", says Karline Janmaat of the Max Planck Institute for Evolutionary Anthropology.

"For a long time people claimed that animals, contrary to humans, cannot remember the past. This study helps us to understand why chimpanzees and other primates should remember events over long periods in time. And guess what? It also shows they do!" says Christophe Boesch of the Max Planck Institute for Evolutionary Anthropology.


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Contact: Karline R. L. Janmaat
karline_janmaat@eva.mpg.de
49-152-158-77934
Max-Planck-Gesellschaft
Source:Eurekalert  

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