Navigation Links
Study reveals impact of historical domestic cattle hybridization with American bison
Date:8/7/2012

Plains bison are an iconic symbol of America on everything from coins to state flags. Now scientists writing in Conservation Biology are exploring how the cross-breeding of bison with domestic cattle in the late 1800s may still have unwanted effects on modern populations of the species.

"The plains bison are an iconic symbol of rugged individualism and the will to survive," said Professor James Derr from Texas A&M University. "The population crash and the spectacular recovery over the last 125 years is a classic example of the resilience of this species and the success of science based wildlife conservation."

Plains bison (Bison bison bison) once numbered in the tens of millions, but they were driven to the brink of extinction in the late 1880's during America's westward expansion. A small population of wild bison survived in Yellowstone National Park, while 5 herds remained in the hands of private ranchers. It is estimated that less than 100 surviving bison became the common ancestors of today's herds.

In some of these privately held herds, bison were crossed with domesticated cattle in an attempt to introduce the hardy bison traits into beef producing animals. While this effort failed to produce new and improved beef breeds, some hybrids were created, and with the use of molecular technologies, these scientists have discovered there remains a legacy of small amount of cattle genetic contamination in most bison herds in North America.

"Looking at the long-term recovery of the bison it is important to find out if this small amount of cattle genetics in an otherwise normal bison can really have a biological effect," said Derr. "We brought together researchers from Arizona, California, Montana and Texas to find out."

The team recorded size measurements for over 900 bison from a nutritionally harsh environment for bison on Santa Catalina Island in California and a nutritionally rich environment on a ranch in Montana.

The results revealed that bison with a particular domestic cattle genetic trait, mitochondrial DNA, were consistently smaller and lighter than animals with true bison mitochondrial DNA in both environments.

"We have found that this cattle ancestry affects phenotypic traits and most likely fitness of bison in herds which are maintained for both production and species conservation," concluded Derr. "Long term management efforts with bison, and possibly other species with a history of hybridization, must carefully consider the importance of genome integrity in order to preserve what is the foundation and essence of these species, their genomes."


'/>"/>
Contact: Ben Norman
Sciencenewsroom@wiley.com
44-012-437-70375
Wiley
Source:Eurekalert

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. Law that regulates shark fishery is too liberal: UBC study
3. New study will help protect vulnerable birds from impacts of climate change
4. Study jointly led by UCSB researcher supports theory of extraterrestrial impact
5. BYU study: Using a gun in bear encounters doesnt make you safer
6. 15-year study: When it comes to creating wetlands, Mother Nature is in charge
7. Pycnogenol (French maritime pine bark extract) shown to improve menopause symptoms in new study
8. Crystal structure of archael chromatin clarified in new study
9. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
10. University of Houston study shows BP oil spill hurt marshes, but recovery possible
11. Study demonstrates cells can acquire new functions through transcriptional regulatory network
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/1/2016)... NEW YORK , June 1, 2016 ... Biometric Technology in Election Administration and Criminal Identification to ... According to a recently released TechSci Research report, " ... Sector, By Region, Competition Forecast and Opportunities, 2011 - ... $ 24.8 billion by 2021, on account of growing ...
(Date:5/9/2016)... , UAE, May 9, 2016 ... it comes to expanding freedom for high net worth ... Even in today,s globally connected world, there is still ... system could ever duplicate sealing your deal with a ... second passports by taking advantage of citizenship via investment ...
(Date:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... June 24, 2016 Epic Sciences unveiled ... cancers susceptible to PARP inhibitors by targeting homologous ... (CTCs). The new test has already been incorporated ... multiple cancer types. Over 230 clinical ... response pathways, including PARP, ATM, ATR, DNA-PK and ...
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... is pleased to announce the launch of their brand, UP4™ Probiotics, into Target ... over 35 years, is proud to add Target to its list of well-respected ...
(Date:6/23/2016)... 2016 Houston Methodist Willowbrook Hospital has ... Association to serve as their official health care ... Willowbrook will provide sponsorship support, athletic training services, ... coaches, volunteers, athletes and families. "We ... Association and to bring Houston Methodist quality services ...
(Date:6/23/2016)... FRANCISCO , June 23, 2016   EpiBiome ... has secured $1 million in debt financing from Silicon ... ramp up automation and to advance its drug development ... its new facility. "SVB has been an ... beyond the services a traditional bank would provide," said ...
Breaking Biology Technology: