Navigation Links
Polar bear diet changes as sea ice melts
Date:1/22/2014

athers.

In the second paper, published in summer 2013 in the journal Ecology and Evolution, researchers used polar bear scat to show that the diet of at least some of the bears has shifted from what it was 40 years ago, before climate change was affecting the Hudson Bay lowlands. Today's polar bears are preying more on caribou as well as on snow geese and their eggs.

In the final paper in the series, published in December 2013 in the journal BMC Ecology, the researchers show that polar bears are, with a few exceptions, consuming a mixed diet of plants and animals. The predominance of local vegetation in collected scat suggests little movement among habitat types between feeding sessions, indicating that the polar bears are keeping energy expenditure down.

Taken together, the research indicates that during the ice-free period, polar bears are exhibiting flexible foraging behavior. This behavior likely derives from a shared genetic heritage with brown bears, from which polar bears separated about 600,000 years ago.

"For polar bear populations to persist, changes in their foraging will need to keep pace with climate-induced reduction of sea ice from which the bears typically hunt seals," Gormezano said. "Although different evolutionary pathways could enable such persistence, the ability to respond flexibly to environmental change, without requiring selective alterations to underlying genetic architecture, may be the most realistic alternative in light of the fast pace at which environmental changes are occurring. Our results suggest that some polar bears may possess this flexibility and thus may be able to cope with rapidly changing access to their historic food supply."


'/>"/>
Contact: Kendra Snyder
ksnyder@amnh.org
212-496-3419
American Museum of Natural History
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Antidepressants for bipolar disorder
2. What is the brain telling us about the diagnoses of schizophrenia and bipolar disorder?
3. The Antarctic polar icecap is 33.6 million years old
4. For polar bears, its survival of the fattest
5. New gene variant may explain psychotic features in bipolar disorder
6. Polar bear researchers urge governments to act now and save the species
7. Dartmouth research offers new control strategies for bipolar bark beetles
8. MBL scientists find bipolar marine bacteria, refuting everything is everywhere idea
9. Missing polar weather systems could impact climate predictions
10. Finding life in the volcanic systems of the Antarctic Polar Front
11. Making sense out of the biological matrix of bipolar disorder
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Polar bear diet changes as sea ice melts
(Date:10/16/2014)... challenged conventional thinking on how the bowel lining develops ... how bowel cancer starts. , The researchers produced evidence ... the ,crypts, that are a feature of the bowel ... bowel cancer development, a controversial finding as scientists are ... 3D imaging technologies, Dr Chin Wee Tan and Professor ...
(Date:10/16/2014)... Syncytial Virus causes severe respiratory tract infections and ... year. Scientists at VIB and Ghent University have ... counteract this common virus infection. , Xavier ... that paves the way for the development of ... virus that causes suffering in numerous small children ...
(Date:10/16/2014)... , October 16, 2014 NXT-ID, Inc. ... the "Company"), a biometric authentication company focused on the ... leading edge technologies including Wocket™, the Smart Wallet, at ... Conferenece. FiRe is a leading global conference on the ... Hosted by Mark Anderson , founder and publisher ...
Breaking Biology News(10 mins):Cryptic clues drive new theory of bowel cancer development 2New perspectives for development of an RSV vaccine 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
... In recent years, the possible applications for double-walled ... those working on developing renewable energy technologies. These ... thin enough to be transparent, yet can still ... advanced solar panels, sensors and a host of ...
... for Glycomics in collaboration with colleagues at the ... to identifying a broad spectrum treatment for the ... These highly-infectious viruses are the leading cause of ... of hospitalisations in the developed world, and hundreds ...
... Dec. 23, 2008 -- The reproductive spores of many ... to new research by mycologists and applied mathematicians at ... this week in the Proceedings of the National ... fungal spores is within one percent of the absolute ...
Cached Biology News:Researchers find chink in the armor of viral 'tummy bug' 2In many fungi, reproductive spores are remarkably aerodynamic 2
(Date:10/25/2014)... Charlotte, NC (PRWEB) October 24, 2014 ... high intensity focused ultrasound (HIFU) technology, announced that ... Carol, M.D. as Chief Executive Officer, President and ... new role Dr. Carol will take-on expanded responsibilities ... HIFU technology, as well as overseeing commercialization, manufacturing ...
(Date:10/25/2014)... JERUSALEM , October 24, 2014 ... a clinical-stage pharmaceutical company focused on the development of ... CEO, Nadav Kidron will present at FireRock ... ,FireRock Capital,s Annual Micro-Cap Conference ,Date: Tuesday, October 28, ... Building, New York City , ...
(Date:10/25/2014)... 2014 Investor-Edge has initiated coverage ... CYTR ), Vertex Pharmaceuticals Inc. (NASDAQ: VRTX ... Peregrine Pharmaceuticals Inc. (NASDAQ: PPHM ), and ... companies can be accessed at: http://investor-edge.com/register . ... ended on a positive note as the Dow Jones ...
(Date:10/22/2014)... 22, 2014 New test innovations will be ... diagnostic (IVD) test industry, especially as companies struggle with ... listed more than 25 testing innovations in important disease ... of IVD products. Kalorama details the new approaches its biennial ... for In Vitro Diagnostic Tests , 9th Edition ...
Breaking Biology Technology:SonaCare Medical Board of Directors Appoints Dr. Mark Carol as CEO and President 2SonaCare Medical Board of Directors Appoints Dr. Mark Carol as CEO and President 3Oramed to Present at the FireRock Annual Micro-Cap Conference 2Oramed to Present at the FireRock Annual Micro-Cap Conference 3Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 2Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 3Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 4Biotech Stocks Technical Data - CytRx, Vertex Pharma, Alexion Pharma, Peregrine Pharma, and StemCells 5Report: Radical New IVD Test Approaches Key To Growth 2Report: Radical New IVD Test Approaches Key To Growth 3
... Inc. (Nasdaq:,BIOD) today reported financial results for its second quarter ... $9.6 million or $0.43 per share., "We remain on ... and Chairman of Biodel. "The last patient visits for,both pivotal ... We,expect to announce top line data late in the third ...
... Pennsylvania and OXFORD, England, May 9 ,EUSA Pharma ... oncology, pain control and critical care, today announced ... following the,approval of Cytogen,s shareholders at a special ... of the acquisition agreement, Cytogen shareholders will,receive $0.62 ...
... Pharmaceuticals, Inc.,(Nasdaq: ARNA ) announced today that the ... 2008 Healthcare Conference on May 14, 2008 at 5:20 ... Seasons Hotel in Las,Vegas, Nevada. Dominic P. Behan, Ph.D., ... to provide an overview of the,company, including its clinical ...
Cached Biology Technology:Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 2Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 3Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 4Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 5Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 6Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 7Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 8Biodel Inc. Reports Second Quarter Fiscal Year 2008 Financial Results 9EUSA Pharma Completes Acquisition Of Cytogen Corporation 2EUSA Pharma Completes Acquisition Of Cytogen Corporation 3Arena Pharmaceuticals to Present at the Bank of America 2008 Healthcare Conference 2Arena Pharmaceuticals to Present at the Bank of America 2008 Healthcare Conference 3
Porcine Coronary Artery Smooth Muscle Cells (PCASMC) (>500,000 cells)...
... T4 DNA Ligase catalyzes the joining of ... and the 3´-hydroxyl groups of adjacent nucleotides ... (1). The enzyme has also been shown ... either a DNA or RNA strand in ...
... Chain MAP1A and MAP1B are microtubule-associated proteins ... components of the cytoskeleton. MAP1A and MAP1B each ... light chain subunits. The protein encoded by this ... and can associate with either MAP1A or MAP1B. ...
PC based system for advanced chemifluorescent, chemiluminescent, fluorescent and colorimetric, microarray and microscope imaging and analysis....
Biology Products: