How an entire line of dogs in the Americas disappeared

A 10,000-year-old dog burial at the Koster site in western Illinois.    
        Del Baston courtesy Center for American Archeology

"And just as indigenous people in the Americas were displaced by European colonists, the same is true of their dogs", Oxford Professor Greger Larson, senior author of the studay, said in the statement. North American dogs disappeared shortly after the arrival of the first Europeans. While unsampled pockets of American dogs might still remain, what we've found so far suggests that they have been extensively replaced by European breeds.

Dogs' ancestors in the Americas likely came from Siberia, according to a new study.

"By looking at genomic data along with mitochondrial data, we were able to confirm that dogs came to the Americas with humans, and that almost all of that diversity was lost - most likely as a result of European colonization", Kelsey Witt, who led the mitochondrial DNA genome research as a graduate student at the University of IL, said in a news release. Researchers compared the 71 ancient genomes with DNA from more than 5,000 modern dogs, including breeds like chihuahuas and Carolina dogs, which are commonly thought to be descended from indigenous populations. European colonists - and the canines they brought with them - all but wiped the early dogs' genetic signature from Earth, according to the largest-ever study of ancient and modern dog DNA in North America and Siberia.

"This paper makes really clear that the ancient American dog appears to have nearly entirely vanished, though nobody seems to have any good explanations for why", said Elinor Karlsson, a University of MA professor who studies dog genetics and was not involved in the research, which was published Thursday in Science.

When they compared it to the genetic makeup of modern pooches, they confirmed what other scientists have long suggested: The first dogs of North America, similar to Arctic dogs like Siberian huskies or Alaskan malamutes, were brought to the continent when people crossed the land bridge that formed between Russian Federation and Canada.

The findings are based on research by an global team of 50 scientists, who looked at the DNA of the remains of 71 ancient dogs and compared these to modern American animals. They came with humans who migrated from Asia, probably several thousand years after the first people arrived more than 15,000 years ago. "The genome that it has is the genome of the very, very first" dog to get the disease. Instead, the analysis confirmed, the dogs were most closely related to an ancient Eastern Siberian stock.

"We still have some Neanderthal in us", Perri said. What we uncovered were the last traces of ancient American dogs.

Alaskan malamutes, like this one at the 2016 Westminster Dog Show, are among the oldest dog breeds in North America.

Canine transmissible venereal tumours (CTVT) are a rare form of cancer that can be transmitted between hosts, not unlike the deadly devil facial tumour disease (DFTD) that threatens populations of Tasmanian devils.

"Where people go, so go their dogs, " said Ostrander, who was not part of the study. "Although this cancer's DNA has mutated over the years, it is still essentially the DNA of that original founder dog from many thousands of years ago".

Preserved in every single CTVT tumour is ancient DNA from the long-dead founder.

Karlsson said it is still possible that the genetic signature of ancient American dogs will be found in modern-day dogs, not to mention other surprises. "There's a good chance we're going to find out there's more complexity out there". Man's best friend, the domesticated dog, didn't arrive for another 6,000 years or so, crossing over just in time to avoid the land bridge's collapse, but archaeological evidence suggests that the two species lived in harmony for thousands of years-at least until 1492, the year Columbus sailed the ocean blue. This dog wasn't a giant, wolf-like creature as most would expect all ancient dogs to be, Perrisaid. "And the fact that we don't know anything about it is kind of a big hole". If that happens, she added, researchers can "work our way further back in time".

Related News:

  • Merkel: we should prevent EU-US conflict from becoming trade war

    Merkel: we should prevent EU-US conflict from becoming trade war

    However, Italy - the main arrival point for most migrants from North Africa - does not yet have a bilateral deal with Germany. Mrs Merkel said Europe should protect its borders but without becoming "some sort of fortress".
    It's Croatia for England in World Cup semi-final

    It's Croatia for England in World Cup semi-final

    The song, which includes the lyrics "football's coming home, it's coming home", was originally released in 1998 for the the European Championships in 1996.
    Nick Kyrgios hits back at Marion Bartoli's 'pathetic' claims

    Nick Kyrgios hits back at Marion Bartoli's 'pathetic' claims

    Kyrgios accepts he must control his emotions in order to survive what shapes as his sternest test yet of his title credentials. The "best backhand in the world" stands between Kyrgios and his now customary place in the business week at Wimbledon.
  • Zimbabwe opposition chief eyes 'Obama effect' in historic poll

    Zimbabwe opposition chief eyes 'Obama effect' in historic poll

    Elton Mangoma, who leads the Coalition of Democrats, said boycotting the elections is not the way to go. What we know for certain is that there will be elections in Zimbabwe on July 30.
    Five injured in Pamplona's annual running of the bulls in Spain

    Five injured in Pamplona's annual running of the bulls in Spain

    Saturdays are statistically the most unsafe day of the week-long San Fermin festival, leaving around seven people hurt each year. Revellers from around the world flock to Pamplona every year to take part in the eight days of the running of the bulls.

    Russian Federation vs Croatia Prediction

    His shoot-out miss proved pivotal, however, especially after Smolov's weak attempt at a chipped penalty was saved by Subasic. The teams then went back and forth in regulation, and neither could find the victor , sending the game into extra time.
  • Full Quarter-Finals Results and Semi-Finals Schedule

    Among those reacting to the historic win on Twitter was Prince William, who posted to the Kensington Palace account. Jubilant fans packed into pubs and communal squares to cheer on England's World Cup quarter-final clash.
    Pharmacies advised to recall valsartan products

    Pharmacies advised to recall valsartan products

    The HPRA will provide further updates on this matter as more information becomes available. It is also sometimes prescribed after a heart attack.
    Orrin Hatch may have given a clue about Trump's Supreme Court pick

    Orrin Hatch may have given a clue about Trump's Supreme Court pick

    He likes to work in a converted barn office overlooking Lake Huron, with a wood stove and no Internet, when he writes opinions. In 2017, Kethledge coauthored " Lead Yourself First " a book which details how leaders can benefit from Solitude.
  • Joanna Gaines Shares a Tradition Chip Gaines Continued With Baby No. 5

    Joanna Gaines Shares a Tradition Chip Gaines Continued With Baby No. 5

    In the photo, Crew sleeps on Chip's lap, while Chip wears a white paper band around his wrist. A couple hours after the initial tweet, Joanna shared the first picture of her newborn.
    Celebrating National Fried Chicken Day With the Crack Shack

    Celebrating National Fried Chicken Day With the Crack Shack

    George Hamilton is stepping into his role as KFC's Extra Crispy Colonel to celebrate National Fried Chicken Day this year. In support of "President" Austin Perine, a four-year-old with a mission to feed the homeless in Prichard, Ala.
    LeBron James not pressuring Spurs to add second star

    LeBron James not pressuring Spurs to add second star

    Many believed that signing George or trading for Kawhi Leonard would guarantee that James would come to Los Angeles. Rondo is viewed as one of the smartest players in the game and that should see him be a good fit alongside James.

Most liked

Maryland receives subpoena in ongoing federal corruption investigation into college basketball
The investigation has already led to the arrest of several assistant coaches from powerhouse programs. It also sought the personnel file of men's basketball assistant coach Orlando Ranson.

Rafael Nadal SHOCKED me at Wimbledon, admits Alex de Minaur
"I didn't think I could win after losing the third set, but he got exhausted and I played smarter", added Gulbis. 6-4, 7-6 (6). Federer broke serve again in the third game of the third set to lead 2-1 to look in complete control of proceedings.

England into semi-final after win over Sweden
Harry Maguire and Dele Alli scored with headers and goalkeeper Jordan Pickford came up with three spectacular saves in recording the clean sheet in Samara .

Conditions good for getting Thai boys out
Cave rescue experts have said it could be safest to simply supply the boys where they are, and wait for the flooding to subside. Journalists on the scene report that "the trend toward an imminent rescue attempt continues", reports.

Russian Federation v Croatia quarter-final
Modic will have to show leadership in Sochi if Croatia is to make it to the semi-finals for the second time in their history. Croatia then began to settle into possession, only to concede against the run of play in the 31st minute.

Cormier and Miocic face off at ceremonial weigh-in ahead of UFC 226
But even then, Cormier is right to point out that he's fought guys with similar reach advantages. Miocic continues to defy the odds and make those who bet against him regret their decisions.

Lawyers: Manafort in solitary confinement as he awaits trial
Three others - George Papadopoulos, Michael Flynn and Rick Gates - have pleaded guilty and agreed to cooperate with investigators. Manafort's appearance and the safety of the community", Thursday's court filing states.

Halsey breaks down on stage following G-Eazy break up
As a source revealed exclusively to Us Weekly earlier this week, the split was due to conflicting schedules. The "Him & I" rapper also explained how special it is to make records with someone you love.

Shocking: Bihar girl gang-raped by her teachers, principal and fellow students
According to the FIR, the girl was first raped by three schoolmates in the school's washroom in December a year ago . She was later asked not to complain about the incident either to her family or to the police.

'Trump baby' balloon cleared to fly over London during President's visit
Together Against Trump has already laid down plans to march through London's center to Trafalgar Square. Trump will only stay overnight in London when he arrives next Thursday, at the US ambassador's home.

Trailer Talk: Sunny Leone, You'll Never Forget
Also starring Raj Arjun, Karamvir Lamba, Bijay Jasjit Anand and Marc Buckner, the show will be premiered on July 16 on ZEE5. Then her journey into adult films and coming to India to rise as a Bollywood star is also shown.

USA service member killed, 2 wounded in 'apparent insider attack' in Afghanistan
Army Sgt. 1st Class Mihail Golin, 34, was killed in a firefight with ISIS fighters in eastern Afghanistan on January 1. It was not immediately clear what became of the shooter. "The incident is under investigation".

Calif. lawmakers OK plan for 'strongest net neutrality protection' in nation
Wiener said he was "cautiously optimistic", that the bills would pass, but that the opposition will be "intense and well-funded". The commission has asserted that the federal government has the right to regulate the internet, not states.

Djokovic slams Wimbledon crowd after being booed
A couple of guys were were coughing and whistling while I was bouncing the ball more or less until the end of the match. We get along very well. "If you hit it with the frame, it's supposed to kind of slow down the trajectory of the ball.

World No.1 Rafael Nadal into Wimbledon third round
Spain's Rafael Nadal walks in front of the Rolex logo on the scoreboard during his first round match against Israel's Dudi Sela . Playing in his first tournament since last month's French Open triumph, the Spaniard saw off the world number 127 6-3 6-3 6-2.