Selective breeding of foxes that show less aggression towards humans can lead to significant behavioral and physical changes within just a few generations.
This long-term fox domestication experiment highlights the powerful role of genetic selection in the evolution of domesticated animals.
Deep dives
Domestication of foxes through genetic selection
Researchers have found that wild foxes can be domesticated by selectively breeding those that show less aggression towards humans. In the long-term fox domestication experiment conducted in Siberia, Ludenilla Shrut and her team started selecting foxes that did not display aggressive behavior towards researchers. Within five generations, they observed significant changes, including docility towards humans, wagging tails, and licking of hands. These changes were not due to training or learning, but purely the result of genetic selection.
Evolution of domesticated traits in tame foxes
In the ongoing fox domestication experiment, significant evolution of domesticated traits has been observed. The tameness towards humans in the selected foxes is accompanied by other domesticated features such as floppy ears, curly tails, and juvenileized facial characteristics. Despite approaching the 60th generation, these features appeared within the first five generations of the experiment. This research not only sheds light on the domestication process but also further demonstrates the impact of genetic selection on the evolution of domesticated animals.
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Long-Term Study on Fox Domestication and Genetic Selection
Evolutionary biologist Lee Dugatkin talks about the six-decade Siberian experiment with foxes that has revealed details about domestication in general.