Featured Research

from universities, journals, and other organizations

Primate behavior: Chimps select smart tools, monkeys intentionally beg

Date:
July 18, 2012
Source:
Public Library of Science
Summary:
Chimpanzees use weight to pick the best tool, and monkeys beg more when they're paid attention to.

Chimpanzees use weight to pick the best tool, and monkeys beg more when they're paid attention to, as reported in two independent research reports published July 18 in the open access journal PLoS ONE.

Related Articles


In the chimp study, researchers found that the chimpanzees used weight to choose the best hammer to crack open nuts. Nut cracking is one of the most sophisticated instances of tool use in chimpanzees, and learning how to do it has been shown to be very difficult for some chimps. In work led by Cornelia Schrauf of the University of Vienna, the researchers showed that the chimps were able to choose the best tool to crack nuts based solely on the weight of the tool. Schrauf notes, "Experience clearly affected the subjects´ attentiveness to the relevant tool properties. Whereas the most skilled chimpanzee showed a preference for the most efficient hammers from the early beginning of the experiment, the unskilled individuals became selective over time."

In another study, old world monkeys called Mangabeys were shown to modulate their begging behavior based on whether the experimenter was paying attention to them. The monkeys were trained to make "requesting gestures," and the researchers, led by Audrey Maille of the University of Rennes 1 in France, found that the monkeys gestured more and faster when the experimenter's body and head were facing the monkey than when they were oriented away. The monkeys did not modulate their behavior simply based on the direction of the experimenter's gaze, though.

Maille explains, "Our study deals with…whether functional similarities may be found between human language and nonhuman primates communication. By investigating the flexibility of gestures production, we showed that old world monkeys, and not only great apes, may use communicative signals intentionally."


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal References:

  1. Maille A, Engelhart L, Bourjade M, Blois-Heulin C. To Beg, or Not to Beg? That Is the Question: Mangabeys Modify Their Production of Requesting Gestures in Response to Human's Attentional States. PLoS ONE, 2012; 7 (7): e41197 DOI: 10.1371/journal.pone.0041197
  2. Schrauf C, Call J, Fuwa K, Hirata S. Do Chimpanzees Use Weight to Select Hammer Tools? PLoS ONE, 2012; 7 (7): e41044 DOI: 10.1371/journal.pone.0041044

Cite This Page:

Public Library of Science. "Primate behavior: Chimps select smart tools, monkeys intentionally beg." ScienceDaily. ScienceDaily, 18 July 2012. <www.sciencedaily.com/releases/2012/07/120718192005.htm>.
Public Library of Science. (2012, July 18). Primate behavior: Chimps select smart tools, monkeys intentionally beg. ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2012/07/120718192005.htm
Public Library of Science. "Primate behavior: Chimps select smart tools, monkeys intentionally beg." ScienceDaily. www.sciencedaily.com/releases/2012/07/120718192005.htm (accessed October 30, 2014).

Share This



More Plants & Animals News

Thursday, October 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Galapagos Tortoises Bounce Back, But Ecosystem Lags

Galapagos Tortoises Bounce Back, But Ecosystem Lags

Newsy (Oct. 29, 2014) — The Galapagos tortoise has made a stupendous recovery from the brink of extinction to a population of more than 1,000. But it still faces threats. Video provided by Newsy
Powered by NewsLook.com
Obama: The US Will Not 'run and Hide' From Ebola

Obama: The US Will Not 'run and Hide' From Ebola

AP (Oct. 29, 2014) — Surrounded by health care workers in the White House East Room, President Barack Obama said the U.S. will likely see additional Ebola cases in the weeks ahead. But he said the nation can't seal itself off in the fight against the disease. (Oct. 29) Video provided by AP
Powered by NewsLook.com
Oatmeal Healthy Recipes and Benefits

Oatmeal Healthy Recipes and Benefits

Buzz60 (Oct. 29, 2014) — Oatmeal is a fantastic way to start your day. Whichever way you prepare them, oats provide your body with many health benefits. In celebration of National Oatmeal Day, Krystin Goodwin (@krystingoodwin) has a few recipe ideas, and tips on how to kickstart your day with this wholesome snack! Video provided by Buzz60
Powered by NewsLook.com
GoPro Video Gives a Lion's-Eye View of The Hunt

GoPro Video Gives a Lion's-Eye View of The Hunt

Buzz60 (Oct. 29, 2014) — If you’ve ever wondered what getting takeout looks like for lions in Africa, the GoPro video from Lion Whisperer Kevin Richardson will give you a lion’s-eye view of the hunt. Jen Markham has more. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins