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Dogs first domesticated in the Middle East
03.21.2010
09:43 pm
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I’m a sucker for books and TV shows the purport to explain how humankind, dogs and cats came to live so closely together. The idea that Tara and I share our bed with a tiny little wolf who loves the crap out of us—and we love him back equally—never ceases to amaze me. Where does this cross-species love come from? That’s what I really want to know.

In any case, taking a page from geneticists, researchers now believe that it was in the Middle East, and not Asia where dogs were first domesticated. From the New York Times:

A Middle Eastern origin for the dog also fits in better with the archaeological evidence, and has enabled geneticists to reconstruct the entire history of the dog, from the first association between wolves and hunter gatherers some 20,000 years ago to the creation by Victorian dog fanciers of many of today’s breeds.

A research team led by Bridgett M. vonHoldt and Robert K. Wayne of the University of California, Los Angeles, has analyzed a large collection of wolf and dog genomes from around the world. Scanning for similar runs of DNA, the researchers found that the Middle East was where wolf and dog genomes were most similar, although there was another area of overlap between East Asian wolves and dogs. Wolves were probably first domesticated in the Middle East, but after dogs had spread to East Asia there was a crossbreeding that injected more wolf genes into the dog genome, the researchers conclude in Thursday’s issue of the journal Nature.

The archaeological evidence supports this idea, since some of the earliest dog remains have been found in the Middle East, dating from 12,000 years ago. The only earlier doglike remains occur in Belgium, at a site 31,000 years old, and in western Russia from 15,000 years ago.

Humans lived as roaming hunters and gatherers for most of their existence. Dr. Wayne believes that wolves began following hunter-gatherer bands to feed on the wounded prey, carcasses or other refuse. At some stage a group of wolves, who happened to be smaller and less threatening than most, developed a dependency on human groups, and may in return have provided a warning system.

 
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New Finding Puts Origins of Dogs in Middle East (New York Times)

Posted by Richard Metzger
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03.21.2010
09:43 pm
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