Navigation Links
Young female chimpanzees appear to treat sticks as dolls
Date:12/20/2010

CAMBRIDGE, Mass. -- The must-have gift for young female chimpanzees this holiday season might be in the Christmas tree, not under it.

That's the finding of scientists at Harvard University and Bates College, who say female chimpanzees appear to treat sticks as dolls, carrying them around until they have offspring of their own. Young males engage in such behavior much less frequently.

The new work by Sonya M. Kahlenberg and Richard W. Wrangham, described this week in the journal Current Biology, provides the first suggestive evidence of a wild non-human species playing with rudimentary dolls, as well as the first known sex difference in a wild animal's choice of playthings.

The two researchers say their work adds to a growing body of evidence that human children are probably born with their own ideas of how they want to behave, rather than simply mirroring other girls who play with dolls and boys who play with trucks. Doll play among humans could have its origins in object-carrying by earlier apes, they say, suggesting that toy selection is probably not due entirely to socialization.

"In humans, there are robust sex differences in children's toy play, and these are remarkably similar across cultures," says Kahlenberg, a lecturer in biology at Bates who conducted the research as a postdoctoral researcher in Wrangham's group at Harvard. "While socialization by elders and peers has been the primary explanation, our work suggests that biology may also have an important role to play in activity preferences."

In 14 years of data on chimpanzee behavior at the Kibale National Park in Uganda, Kahlenberg and Wrangham counted more than 100 examples of stick-carrying. In many cases young females weren't using the sticks for foraging or fighting, as adults sometimes do, or for any other discernable purpose.

Some young chimpanzees carried sticks into the nest to sleep with them and on one occasion built a separate
'/>"/>

Contact: Steve Bradt
steve_bradt@harvard.edu
617-496-8070
Harvard University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Researchers discover that growing up too fast may mean dying young in honey bees
2. Study: urban black bears live fast, die young
3. Research shows that time invested in practicing pays off for young musicians
4. 12 outstanding young scientists named as EMBO Young Investigators
5. Old flies can become young moms
6. Elsevier announces winners of 3rd Annual Scopus Young Indian Scientist Award
7. Old and young brains rely on different systems to remember emotional content
8. Young adults need to make more time for healthy meals
9. Dont go changing: New chemical keeps stem cells young
10. NSF-funded workshops help young researchers teach science
11. Damon Runyon Cancer Research Foundation awards prestigious fellowships to 13 top young investigators
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/9/2015)... 9, 2015 Synaptics Inc. (NASDAQ: SYNA ), ... that it will report financial results for the third ... after the close of market. The company will host ... 2:00 p.m. PT (5:00 p.m. ET), during which management ... on the live call, analysts and investors should dial ...
(Date:4/2/2015)... April 2, 2015 At its 2015 ACMG ... City , the American College of Medical Genetics ... directors to its Board.  Members of the ACMG Board ... for forming and advancing its policies and programs. ACMG ... "It,s an eventful time in medical genetics ...
(Date:4/1/2015)... April 1, 2015   Medisafe ™, the leading ... across iOS and Android smartphones ... biofeedback into the platform to allow patients to track ... the first time, patients will be able to visualize ... impacts important biometrics, such as glucose levels and blood ...
Breaking Biology News(10 mins):Synaptics to Report Third Quarter Results on April 23 2American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 2American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 3American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 4American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 5American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 6American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 7American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 8Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2
... has found genetic evidence of how some plants adapt to ... day be used to help food crops survive in new ... noticed several years ago that a variant of the research ... had come from coastal areas. To test the observation, Salt ...
... In a demonstration of "reverse-ecology," biologists at the University ... organism,s adaptive traits by looking first at its genome and ... to be published the week of Jan. 31 in the ... offers a powerful new tool in evolutionary genetics research, one ...
... have found that free radicals (unstable molecules that cause the ... the damage in the eyes of patients with Fuchs Endothelial ... the most common reasons for corneal transplants worldwide. ... of Pathology , holds promise for early and preventative treatments ...
Cached Biology News:Plants can adapt genetically to survive harsh environments 2Analysis of bread mold genomes demos 'reverse-ecology' tool 2Analysis of bread mold genomes demos 'reverse-ecology' tool 3Free radicals in cornea may contribute to Fuchs dystrophy, most common cause of corneal transplants 2
(Date:5/5/2015)... Hills, MI (PRWEB) May 05, 2015 ... premier Parker Hannifin distributor, announces the launch of ... provide fleet operators with a convenient way to ... maintenance products . , The new ... to 100,000 vehicles with direct access to high ...
(Date:5/4/2015)... Many of us take a healthy ... with rare, inherited mutations of certain genes, severe ... impaired immune responses. Now, researchers at ... role for calcium signaling in immune responses to ... causing tuberculosis (TB). Specifically, they ...
(Date:5/4/2015)... May 4, 2015  Tikcro Technologies Ltd. (OTCQB: TIKRF) ... on Form 20-F for the fiscal year ended December ... ("SEC"). The annual report on Form 20-F contains information ... in the area of cancer immune checkpoints. This project ... high specificity and binding in targeting certain identified immune ...
(Date:5/4/2015)... Genedata, a leading provider of advanced ... research, today announced the release of Genedata ... enterprise solution for biologics R&D. This first-in-class workflow ... and development of novel biotherapeutics. Version 5.0 enables ... optimization and developability requirements. Genedata will present highlights ...
Breaking Biology Technology:Exotic Automation & Supply Launches Ecommerce Website 2Researchers Discover A Novel And Unexpected Role For Calcium In Controlling Inflammation During Chronic Lung Infection 2Researchers Discover A Novel And Unexpected Role For Calcium In Controlling Inflammation During Chronic Lung Infection 3Tikcro Technologies Files Annual Report on Form 20-F for the Year Ended December 31, 2014 2Genedata Biologics 5.0 – Antibody Engineering and Developability Assessment Advances 2Genedata Biologics 5.0 – Antibody Engineering and Developability Assessment Advances 3Genedata Biologics 5.0 – Antibody Engineering and Developability Assessment Advances 4
... the Georgia Institute of Technology has developed a ... how space vehicles and instruments are designed. The ... which can produce electronics that are highly resistant ... Titled "SiGe Integrated Electronics for Extreme Environments," ...
... University of Technology and Oxford University announce a new type ... cheap genetic analysis. In the journal Nature Nanotechnology ... man-made and biological materials to result in a tiny hole ... single DNA molecules. Biological , "The first mapping ...
... female fruit fly. Being a looker is simply not enough. To ... like a girl, even smell like one. Otherwise, you might just ... fruit flies must distinguish between a potential mate and a potential ... he,ll court; when he senses the other is a male, he,ll ...
Cached Biology Technology:Project pioneers use of silicon-germanium for space electronics applications 2Project pioneers use of silicon-germanium for space electronics applications 3Project pioneers use of silicon-germanium for space electronics applications 4Project pioneers use of silicon-germanium for space electronics applications 5Fitting a biological nanopore into a man-made one, new ways to analyze DNA 2Battle of the sexes, fruit-fly style 2