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
'/>"/>

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

Page: 1 2

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:7/30/2014)... Queen in Lewis Carroll,s Through the Looking Glass, ... University of Singapore improved a 35-year-old ecology model ... to millions of years. , The new model, ... the "Red Queen Effect," an evolutionary hypothesis introduced ... suggests that organisms must constantly increase their fitness ...
(Date:7/30/2014)... A deep-sea octopus protected and tended her eggs until ... published July 30, 2014 in the open-access journal ... Aquarium Research Institute and colleagues. , Octopuses typically have ... females protect and take care of their fertilized eggs ... eggs for 1 to 3 months, but little is ...
(Date:7/30/2014)... American Chemical Society (ACS) announced today that David L. ... ACS Biomaterials Science & Engineering as editor-in-chief. With ... the new journal will feature high-quality research in the ... or naturally derived materials that interact with living or ... it reflects the tremendous growth in the field of ...
Breaking Biology News(10 mins):Classic Lewis Carroll character inspires new ecological model 2Classic Lewis Carroll character inspires new ecological model 3Deep-sea octopus has longest-known egg-brooding period 2ACS Biomaterials Science & Engineering: Brand-new journal launches in 2015, names editor 2
... demonstrated systemic spread of avian influenza virus in cats ... paper by Rimmelzwaan et al., "Influenza A virus (H5N1) ... routes of virus spread within and between hosts," appears ... Pathology and is accompanied by a commentary. ...
... yet this year, but it seems like everyone's getting sick. ... more infectious invaders besides the flu to worry about. They ... down for days or weeks and cause thousands of deaths ... (RSV). Pronouncing the names of the microbes can be almost ...
... animals in the wild more easily from a car than ... tuned to the visual movements of an approaching predator's feet, ... this visual filter is used to signal the presence of ... and the force of gravity," suggests Dr. Troje, Canada Research ...
Cached Biology News:Avian influenza virus in mammals spreads beyond the site of infection to other organ systems 2Flu not the only germ threat this time of year 2Flu not the only germ threat this time of year 3Flu not the only germ threat this time of year 4Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests 2
(Date:7/30/2014)... July 30, 2014 Regulus Therapeutics Inc ... leading the discovery and development of innovative medicines targeting ... and highlights for the quarter ended June 30, 2014 ... markets close. Regulus will host a ... at 5:00 pm Eastern Daylight Time to discuss its ...
(Date:7/30/2014)... and PARIS , July 30, 2014 ... SAN and NYSE: SNY) today announced that the Companies ... (FDA) rare pediatric disease priority review voucher in connection ...  The priority review voucher entitles the holder to designate ... expedited 6-month review from the filing date instead of ...
(Date:7/30/2014)... Columbia, MD (PRWEB) July 30, 2014 ... announces today the release of the REVELERIS® ... allows organic chemists, preparative chromatographers, and other researchers ... (LC) using a single unit. , With the ... between flash and preparative chromatography modes with a ...
(Date:7/30/2014)... , July 30, 2014  Decision Resources ... and medical directors in the United ... of biosimilar market penetration will be the level ... (MCOs) and the expected lower cost to patients. ... biosimilars that meet their pricing expectations in order ...
Breaking Biology Technology:Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 2Regulus Announces Timing for Second Quarter 2014 Financial Results Webcast and Conference Call 3Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 2Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 3Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 4Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 5Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 6Grace Launches New REVELERIS® Prep Purification System 2Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 2Surveyed U.S. Payers Expect Cost Savings to MCOs and Patients to be the Strongest Drivers of Biosimilar Uptake 3
... Purpose , Researchers and forensic agencies ... immuno- or colourimetric assays. These assays suffer from a number of limitations: , ... They are not as commonly available for novel sample matrices such as saliva ... They can be relatively costly due to the high volume of reagents used. ...
... , Purpose , ... the use of chloramphenicol (CAP) as a veterinary drug for food ... for the identification and quantification of CAP in milk and milk ... many analytical procedures are described in the literature, the presented method ...
... This application note illustrates an improved method to ... rubber nipple formulations were analyzed. Two formulations were composed ... silicone polymer and the remaining two were composed of ... to have a significantly higher concentration of NDMA and ...
Cached Biology Technology:Simultaneous Screening of 23 Drugs of Abuse in Oral Fluid Using an LC/MS/MS Method 2Simultaneous Screening of 23 Drugs of Abuse in Oral Fluid Using an LC/MS/MS Method 3Simultaneous Screening of 23 Drugs of Abuse in Oral Fluid Using an LC/MS/MS Method 4Determination of the Chloramphenicol residues in milk and milk products using LC/MS/MS 2Determination of the Chloramphenicol residues in milk and milk products using LC/MS/MS 3Determination of the Chloramphenicol residues in milk and milk products using LC/MS/MS 4Determination of the Chloramphenicol residues in milk and milk products using LC/MS/MS 5Determination of the Chloramphenicol residues in milk and milk products using LC/MS/MS 6Determination of N-nitrosamines in Baby Bottle Rubber Teats by Liquid Chromatography-Atmospheric Pressure Chemical Ionization Mass Spectrometry 2Determination of N-nitrosamines in Baby Bottle Rubber Teats by Liquid Chromatography-Atmospheric Pressure Chemical Ionization Mass Spectrometry 3
Schneider's Drosophila - Insect medium...
... System more than doubles the benefits of ... fast analysis cycles of the standard binary ... in tandem mode. Difficult separations are dramatically ... or heartcut configurations, on-line sample preparation is ...
... introduce random mutations to the gene supplied by ... into a vector of choice to obtain a ... can be set to a desired value within ... 106-108. Mutations can be restricted to a ...
... preparations are prepared from customers high-copy ... to multi-gram scales. Each preparation is ... glycerol stocks are maintained to facilitate ... (Clonal selection includes screening colonies for ...
Biology Products: