Navigation Links
New study changes conditions for Spanish brown bears
Date:3/18/2008

Brown bears from the Iberian Peninsula are not as genetically different from other brown bears in Europe as was previously thought. An international study being published this week in Proceedings of the National Academy of Sciences, PNAS, shows that, on the contrary, the Spanish bear was only recently isolated from other European strains. These findings shed new light on the discussion of how to save the population of Spanish bears.

The researchers extracted DNA and determined the gene sequence of bears from prehistoric material, primarily from the Iberian Peninsula. Some of the material was as much as 80,000 years old. When the data material was analyzed, what emerged was a totally unexpected pattern.

We expected to be able to follow the Spanish brown bear far back in time, but we found to our amazement that it had genetic material from bears in other parts of Europe. In fact, it seems that the Spanish bear was isolated for the first time in our own time, says doctoral student Cristina Valdiosera, who performed most of the laboratory and analytical work.

These bears have possibly been isolated in Spain for a few thousand years, which is a very short period in an evolutionary perspective. In other words, there has been a flow of genes to and from the Iberian Peninsula throughout most of the time brown bears have been there. This is extremely interesting data when we discuss transporting bears from other areas to Spain for the purpose of preservation, says Anders Gtherstam, who directed the study.

The number of bears on the Iberian Peninsula is limited, with the population divided into two small groups in the north. In-breeding and genetic depletion constitutes a serious threat to the bears survival in this area. For preservation purposes, the possibility of introducing bears from other areas to the Iberian Peninsula has been discussed, but it has been objected that this would entail the extinction of the genetically unique Iberian bear. It has also been feared that bears from other areas are not as well adapted to the living conditions on the Iberian Peninsula as the Spanish bears are.

But since there has never been a genetically isolated brown bear on the Iberian Peninsula until very recently, these arguments can be questioned, says Anders Gtherstam.


'/>"/>

Contact: Anders Gtherstrm
Anders.Gotherstrom@ebc.uu.se
46-073-992-7864
Uppsala University
Source:Eurekalert

Related biology news :

1. Adolescent girls with ADHD are at increased risk for eating disorders, study shows
2. From the backyard to the ocean: New study shows streams act as key nitrogen filters
3. ORNL study finds rivers play part in removing nitrogen
4. US rush to produce corn-based ethanol will worsen dead zone in Gulf of Mexico: UBC study
5. Study suggests new way to screen infants for fetal alcohol syndrome
6. Imports from Latin America may help US meet energy goals, study finds
7. Irritating smells alert special cells, NIH-funded study finds
8. Study shows Darwin was wrong about the origins of chickens
9. New study shows low-fat diets more likely to reduce risk of heart disease than low-carb diets
10. Scientists discover how cigarette smoke causes cancer: Study points to new treatments, safer tobacco
11. Voyage to Southern Ocean aims to study air-sea fluxes of greenhouse gases
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/25/2016)... , Jan. 25, 2016  Glencoe Software, the ... pharma and publication industries, will provide the data management ... Centre (NPSC). ... Phenotypic analysis measures ... whole organisms, allowing comparisons between states such as health ...
(Date:1/20/2016)... , Jan. 20, 2016 A market ... to directly benefit from the explosion in genomics knowledge. ... Howe Sound Research. A range of dynamic trends are ... - personalized medicine - pharmacogenomics - pathogen evolution ... with large markets - greater understanding of the role ...
(Date:1/15/2016)... 2016 Recent publicized breaches in cyber security ... ways to ensure data security and user authentication in ... Android that ties a user,s mobile number ... a hardware authorization token. Customer service agents who employ ... their KodeKey enabled device to verify their identity.  Companies ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... ... February 09, 2016 , ... ... President for Public Policy for the National Organization for Rare Disorders (NORD). Dorman ... to ensure their voices are heard throughout the drug regulatory review process. , ...
(Date:2/9/2016)... This market research report on the global ... of the market in terms of revenue (USD Million). ... the manufacture of microbiology culture media and related products. ... snapshot providing the overall information of various market segments ... also provides the overall information and data analysis of ...
(Date:2/9/2016)... LEXINGTON, Massachusetts , February 9, 2016 ... Enables Children to Take Part in Life-Changing Camp ... announcing a new initiative designed to positively affect the lives of ... rare disease care. --> SHPG ) is announcing a ... with rare diseases, as well as the future of rare disease ...
(Date:2/9/2016)... , Feb. 9, 2016 ... Insights, 2016", report provides in depth insights ... activities around the Protein-Tyrosine Phosphatase 1B (PTP1B) ... profiles in various stages of development including ... Phase III and Preregistration. Report covers the ...
Breaking Biology Technology: