October 20, 2013
"I don't think it means there are ancient polar bears wandering around the Himalayas," Sykes told the Independent. "It could mean there is a subspecies of brown bear in the high Himalayas descended from the bear that was the ancestor of the polar bear. Or it could mean there has been more recent hybridization between the brown bear and the descendent of the ancient polar bear."
Polar bears (Ursus maritimus) may have separated from brown bears (Ursus arctos) as recently as 150,000 years ago, but more recent research argues for a longer evolution, around 4-5 million years ago. Hybridization remains possible between the two species, and is currently a threat to polar bears as their climate heats up from global warming melting the ice the bears depend on.
The theory that the Yeti is in fact an unknown bear is not a new one. In his searches for the Yeti, mountaineer Reinhold Messner found a reference to the Yeti in a 300-year-old Tibetan manuscript that described it as a type of bear.
Artist's rendition of the Yeti. Illustration by: Philippe Semeria/Creative Commons 3.0.
Sykes' research has not yet been published in a peer-reviewed journal, and other scientists have showed some skepticism.
Bill Amos, a research with the University of Cambridge, told the Guardian that it really depends on whether or not the hairs came from a "Yeti" or if the hair was taken deliberately from a polar bear as a Yeti-inspired hoax.
"From Brian Sykes back to the hair is fine. Where the hair comes from and how it got there, I would be more skeptical about," Amos said, noting that it was also difficult to imagine how these bears could stay hidden into the Twenty First Century.
"If there was anything like a medium population of 20-50, which is the minimum number that most people think would allow a viable population, why aren't these things being seen more often by people out looking for snow leopard pelts and all the rest of it? There is very little these days that is so remote that you don't get actually appreciable numbers of humans with binoculars out there."
Dozens of new mammals are discovered every year by researchers, but these are most often rodents and bats. The last new large-bodied mammal discovered by scientists was the soala (Pseudoryx nghetinhensis) in 1992, found in the dense, remote rainforests of of the Annamite Mountains in Southeast Asia. Not surprisingly, new mammal discoveries today are almost solely the province of the tropics.
However, to confirm Sykes's findings, the next step would be for intrepid biologists to attempt to discover the elusive bears and determine exactly what they are—new species or subspecies, hybridization, or something else.
"I think this bear, which nobody has seen alive... may still be there and may have quite a lot of polar bear in it," Sykes told the BBC, adding that if it is a brown bear-polar hybrid it may display unusual behaviors as "eyewitnesses report."
"Then I think that may well be the source of the mystery and the source of the legend," he concludes.
However, Sykes, who has also been studying alleged bigfoot hairs, doesn't say that all the hairs tested were from bears. In 2008, scientists analyzing other Yeti hair discovered it had actually come from a Himalayan goral, an ungulate (hoofed animal) related to both antelope and goats.
"Bigfootologists and other enthusiasts seem to think that they've been rejected by science. Science doesn't accept or reject anything, all it does is examine the evidence and that is what I'm doing," Sykes said.
Sykes' findings will be the subject of a three-part documentary in the UK. In addition, he has a book coming out on the subject next year: The Yeti Enigma: A DNA Detective Story.
Polar bear in Alaska. Polar bears are the world's largest land carnivore. Photo by: Alan Wilson/Creative Commons 3.0.
|AUTHOR: Jeremy Hance joined Mongabay full-time in 2009. He currently serves as senior writer and editor. He has also authored a book.|
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