Wednesday, September 07, 2016

Human 'super predator' more terrifying than bears, wolves and dogs

Human 'super predator' more terrifying than bears, wolves and dogs

Public Release: 25-Jul-2016
Human 'super predator' more terrifying than bears, wolves and dogs
University of Western Ontario

Bears, wolves and other large carnivores are frightening beasts but the fear they inspire in their prey pales in comparison to that caused by the human 'super predator.'

A new study by Western University demonstrates that smaller carnivores, like European badgers, that may be prey to large carnivores, actually perceive humans as far more frightening. Globally, humans now kill smaller carnivores at much higher rates than large carnivores do, and these results indicate that smaller carnivores have learned to fear the human 'super predator' far more than they fear their traditional enemies.

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Zanette, a professor in Western's Department of Biology, and her colleagues experimentally demonstrated that smaller carnivores, like badgers, foxes and raccoons, that may appear to be habituated to humans because they live among us, are actually experiencing elevated levels of fear - living in fear of the human 'super predator' in human-dominated landscapes.

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The team conducted the study on Europeans badgers in Wytham Woods, just outside of Oxford (UK). To experimentally compare their relative fearfulness, the team played badgers the sounds of bears, wolves, dogs and humans in their natural habitat and filmed their responses, using hidden automated speakers and cameras. Whereas hearing bears and dogs had some effect, simply hearing the sound of people speaking, in conversation, or reading passages from books, prevented most badgers from feeding entirely, and dramatically reduced the time spent feeding by those few badgers that were brave enough to venture forth - while hearing the sound of the human 'super predator.'

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