Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Experimental domestication of foxes yields clues to cognitive evolution

08.02.2005


New findings, made by researchers studying the outcome of a decades-long fox-breeding experiment, suggest that some aspects of social intelligence in animals are correlated with genetically selected "tame" behavior--for example, fearlessness and non-aggression toward humans. Understanding how intelligence evolved in humans and other animals remains one of the central evolutionary questions yet to be answered by behavioral scientists. Of particular interest is how social problem solving evolves; many believe it is our own social intelligence that differentiates us from all other species.





In the new work a team of researchers, led by Brian Hare of the Max Planck Institute, Leipzig, Germany, and colleagues at Harvard University and the Russian Academy of Science, have examined the effect of domestication on the social intelligence of foxes in order to address this question of how social problem solving evolves. Recently, it was found that during domestication dogs evolved an unusual ability to communicate with humans: dogs appear to be more skilled at reading human social cues than wolves and even non-human primates. However, it has remained unclear whether the evolution accompanying domestication in dogs occurred as a result of direct selection for communicative ability or instead as a correlated by-product of breeding selection against fear and aggression toward humans.

To better understand how dogs evolved their unusual social cognitive ability, the researchers studied an experimental population of foxes that have been bred in Siberia, Russia, over the last 45 years to exhibit, over generations, increasingly friendly behavior toward humans. After dozens of generations, these foxes now behave toward people much as pet dogs do--they even bark and wag their tails at the sight of a human. Critically, these foxes were not specifically selected during breeding for their social intelligence. However, the current study found that although the foxes were not intentionally selected to be more skillful at solving social problems, they are in fact just as skillful as domestic dogs at reading human social cues. The current study therefore suggests that social intelligence can increase simply as a result of an animal becoming less fearful and aggressive towards potential social partners.

Heidi Hardman | EurekAlert!
Further information:
http://www.current-biology.com
http://www.cell.com

More articles from Studies and Analyses:

nachricht New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

nachricht Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

Im Focus: Bacteria harness the lotus effect to protect themselves

Biofilms: Researchers find the causes of water-repelling properties

Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

Innovation 4.0: Shaping a humane fourth industrial revolution

17.05.2017 | Event News

 
Latest News

Scientists propose synestia, a new type of planetary object

23.05.2017 | Physics and Astronomy

Zap! Graphene is bad news for bacteria

23.05.2017 | Life Sciences

Medical gamma-ray camera is now palm-sized

23.05.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>