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:10/17/2019)... ... October 16, 2019 , ... The International Society ... ISPE Baseline® Guide: Water and Steam Systems (Third Edition) . This guide provides ... steam systems. Industry professionals can better understand Good Manufacturing Practices (GMPs), to comply ...
(Date:10/15/2019)... (PRWEB) , ... October 14, 2019 , ... ... low-level laser therapy technology, today announces its upcoming Business Meeting in Orlando & ... at the Ritz Carlton in Orlando, near Erchonia’s headquarters in Melbourne. , The ...
(Date:10/10/2019)... ... October 09, 2019 , ... Calcium & ... Executive Plaza Hotel in Vancouver, Canada on September 23-24 for two days. The ... measures to develop healthy bone and to prevent calcium-related diseases. The theme of ...
Breaking Biology News(10 mins):
(Date:10/15/2019)... ... October 14, 2019 , ... ARPR , an award-winning tech PR agency at the epicenter ... a Health Care Agency of the Year in the Ragan’s Health Care PR & Marketing ... by Ragan’s. The firm also revealed today that its healthIT practice group grew by 18 ...
(Date:10/10/2019)... (PRWEB) , ... October 10, 2019 , ... ... , the largest network of clinical research centers in Europe. All Pratia research ... network in Europe to become trained and certified as Virtual Trial Capable and ...
(Date:10/3/2019)... ... October 01, 2019 , ... Today Cereset®, the only proven ... point of its randomized research trial for individuals with persisting symptoms following mild-Traumatic ... of a non-invasive technology which compares tones delivered to a subject’s brain guided ...
(Date:10/3/2019)... , ... October 02, 2019 , ... eKare’s inSight® digital ... Digital Health Accelerator run by the East Midlands Academic Health Science Network (EMAHSN), the ... of technology in NHS by providing support to develop and deploy solutions to the ...
Breaking Biology Technology: