Genetic Archaeology
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Links |  Subscribe to GeneticArchaeology.com RSS Fee Subscribe


More Articles
Compound protects brain cells after traumatic brain injuryCompound protects brain cells after traumatic brain injury

Mice and men share a diabetes geneMice and men share a diabetes gene

Microbes evolve faster than ocean can disperse themMicrobes evolve faster than ocean can disperse them

Penn team studies nanocrystals by passing them through tiny poresPenn team studies nanocrystals by passing them through tiny pores

Arctic sea ice helps remove CO2 from the atmosphereArctic sea ice helps remove CO2 from the atmosphere

Can tapioca replace corn as the main source for starch sweeteners?Can tapioca replace corn as the main source for starch sweeteners?

Antifreeze proteins in Antarctic fish prevent both freezing and meltingAntifreeze proteins in Antarctic fish prevent both freezing and melting

Sandia magnetized fusion technique produces significant resultsSandia magnetized fusion technique produces significant results

Violent origins of disc galaxies probed by ALMAViolent origins of disc galaxies probed by ALMA

What set the Earth's plates in motion?What set the Earth's plates in motion?

'Jaws' lived in Doncaster'Jaws' lived in Doncaster

Two-dimensional electron liquidsTwo-dimensional electron liquids

Sharks in acidic waters avoid smell of foodSharks in acidic waters avoid smell of food

American-made wind turbine bladesAmerican-made wind turbine blades

Nature's designs inspire research into new light-based technologiesNature's designs inspire research into new light-based technologies

When rulers can't understand the ruledWhen rulers can't understand the ruled

Hey1 and Hey2 ensure inner ear 'hair cells' are made at the right time, in the right placeHey1 and Hey2 ensure inner ear 'hair cells' are made at the right time, in the right place

Is a gluten-free diet enough to control the complications of celiac disease?Is a gluten-free diet enough to control the complications of celiac disease?

X-ray imaging paves way for novel solar cell productionX-ray imaging paves way for novel solar cell production

Childhood mentors have positive impact on career successChildhood mentors have positive impact on career success

Blood-cleansing biospleen device developed for sepsis therapyBlood-cleansing biospleen device developed for sepsis therapy

Missing piece found to help solve concussion puzzleMissing piece found to help solve concussion puzzle

Biologists delay the aging process by 'remote control'Biologists delay the aging process by 'remote control'

Bombarded by explosive waves of information, scientists review new ways to process and analyze Big DataBombarded by explosive waves of information, scientists review new ways to process and analyze Big Data

Program earns kudos for improving grades, retaining studentsProgram earns kudos for improving grades, retaining students

Geography matters: Model predicts how local 'shocks' influence U.S. economyGeography matters: Model predicts how local 'shocks' influence U.S. economy

A healthy lifestyle adds years to lifeA healthy lifestyle adds years to life

Identified for the first time what kind of explosive has been used after the detonationIdentified for the first time what kind of explosive has been used after the detonation

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Mountain caribou's ancient ancestry revealed (1/29/2009)

Tags:
caribou, deer, mammals, population genetics
This is a mountain caribou in the southern Canadian Rockies. -  Mark Bradley, Boreal Nature Photos
This is a mountain caribou in the southern Canadian Rockies. - Mark Bradley, Boreal Nature Photos

The declining mountain caribou populations of Canada's southern Rockies are a more distinct breed than scientists previously believed, according to a new study by University of Calgary researchers that is shedding light on the ancient ancestry of the mountain-dwelling herbivores.

In a study published in the current issue of the journal Molecular Ecology, Faculty of Environmental Design PhD candidate Byron Weckworth and his research group describe how Alberta and British Columbia's mountain caribou populations are remnants of blending between the two major subspecies of caribou that likely occurred during the end of the last ice age about 10,000 years ago.

"These are special animals because they are not woodland caribou or tundra caribou, but a very interesting combination of the two," Weckworth said. "Mountain caribou are an important part of the genetic diversity of the entire species and maintaining that diversity will be critical as caribou face the impacts of continued human development and climate change into the future."

An analysis of mountain caribou DNA and 10 years of tracking the migratory patterns of populations across the southern Rockies in the Yellowstone-to-Yukon corridor, including western Alberta and eastern BC, showed that mountain caribou are hybrids of migratory tundra caribou and sedentary woodland caribou. The researchers believe the blending likely occurred during glacial retreat at the end of the last ice age when both subspecies of caribou could have expanded into the newly ice-free corridor along the eastern slopes of the Rockies.

"Their DNA is basically part woodland and part tundra, which is fascinating because this mixture is apparent given the genetic expression of migratory behavior." Weckworth said. "Among these mountain caribou we see a wide range of behavior from some individuals that don't migrate at all to some that move up to 100 kilometres between the foothills and the mountains every year. Populations contain both migratory and non-migratory individuals, and it is exactly this type of variation that provides them with the flexibility to adapt to a landscape that is changing due to climatic conditions and human activities."

Their findings could lead to a change in how the endangered populations are managed due to their unique genetics and behavior. For example, the Little Smoky population in Alberta has been declining for over a decade because of human-caused habitat changes that are believed to be altering predator-prey relationships. Genetic analyses confirm that the Little Smoky population is different from other caribou populations in west-central Alberta, and is likely the last remnant of distinct boreal caribou along the eastern slopes of the Canadian Rockies.

The study, which was supported by Weyerhaeuser, the Canadian Association of Petroleum Producers, Shell Canada, Parks Canada, and Alberta Department of Sustainable Resource Development, concludes that new conservation plans may be required to reflect the mountain caribou's unique nature.

"It is impossible to predict all the impacts of something like climate change, but we know that migration has been an important adaptive response in the past, and so it is best to preserve this unique genetic and behavioral variability to better enable caribou to adapt to an uncertain future," Weckworth said.

Note: This story has been adapted from a news release issued by the University of Calgary

Post Comments:

Search

New Articles
Slimy fish and the origins of brain developmentSlimy fish and the origins of brain development

Natural born killers: Chimpanzee violence is an evolutionary strategy

Iberian pig genome remains unchanged after 5 centuries

Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptationCounting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation

Human faces are so variable because we evolved to look uniqueHuman faces are so variable because we evolved to look unique

How learning to talk is in the genes

Gibbon genome and the fast karyotype evolution of small apes

Non-dominant hand vital to the evolution of the thumb

Sloths are no slouches when it comes to evolution

Mapping the DNA sequence of Ashkenazi JewsMapping the DNA sequence of Ashkenazi Jews

A single evolutionary road may lead to Rome

Sequencing of 5 African fishes reveals diverse molecular mechanisms underlying evolution

Extinctions during human era worse than thought

Maternal low protein diet promotes diabetic phenotypes in offspring

Non-adaptive evolution in a cicada's gutNon-adaptive evolution in a cicada's gut



Archives
September 2014
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
May 2007
April 2007
March 2007
February 2007
January 2007
November 2006
October 2006
September 2006
June 2005
October 2004
July 2001


Science Friends
Agricultural Science
Astronomy News
Biology News
Biomimicry Science
Cognitive Research
Chemistry News
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Fossil News
Genetics News
Geology News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.