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:5/10/2015)... 2015 Fingerprint Cards (FPC) has received ... from the distributor World Peace Industrial Group (WPI), part of ... Asia . Deliveries are planned to take place ... smartphone manufacturers in China . The order ... guidance of + 1 000 MSEK for 2015.   ...
(Date:5/5/2015)... , May 5, 2015, NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, reminds investors and ... Technology Officer, is presenting  at CARTES SECURE CONNEXIONS AMERICA 2015, ... 2015. The three-day conference is organized into ... speaking in is themed Global Fraud: Where is the ...
(Date:4/21/2015)... High crime rate, increasing ... access control systems market in Saudi Arabia ... published report by TechSci Research " Saudi Arabia Access Control ... systems market in Saudi Arabia ... control systems market in the Kingdom is growing at ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 235 Million 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3
... CORVALLIS, Ore. Researchers at Oregon State University for the ... overfishing and nitrate pollution can help destroy coral reefs ... bring with it unwanted pathogens, choke off oxygen and disrupt ... big enough to essentially smother corals. They can get out ...
... who take the time to read food labels are ... from a recently released study authored by Steven T. ... of Agriculture,s Department of Agricultural and Resource Economics, in ... Compostela in Spain, the University of Arkansas and the ...
... press release is available in Spanish . ... Development, NEIKER-Tecnalia, and the National Institute of Agricultural Research in ... of ,black dead arm, (BDA) on grapevine leaves are, in ... and BDA are diseases that affect the trunk of ...
Cached Biology News:The 'slippery slope to slime': Overgrown algae causing coral reef declines 2NEIKER and INRA discover that BDA symptoms in grapevine leaves are a sign of esca 2
(Date:5/22/2015)... (PRWEB) May 22, 2015 Knowledgent ... white paper that explores the potential of big data ... white paper was developed to help life sciences and ... leverage data to gain critical business insights. , The ... amounts of data driven by patient profiling, compliance and ...
(Date:5/21/2015)... NEW YORK , May 21, 2015 /PRNewswire/ ... Prader-Willi Research (FPWR), a nonprofit organization dedicated to ... of Prader-Willi syndrome (PWS), announced today that FPWR ... Leon and Irina Shaulov contributed $1 ... and clinical initiatives.  ...
(Date:5/21/2015)... Germany (PRWEB) May 21, 2015 ... that its manufacturing facility in Worms, Germany has ... an independent subsidiary of the International Pharmaceutical Excipient ... Grace facilities that produce its SYLOID® FP brand ... received GMP certification, following the Curtis Bay, Maryland ...
(Date:5/21/2015)... , May 21, 2015 /PRNewswire/ - RepliCel ... clinical stage regenerative medicine company focused on the ... upcoming poster presentation at the International Society for ... for chronic Achilles tendinosis currently in a Phase ... May 29 th from 5:30 PM to ...
Breaking Biology Technology:New White Paper Explores the Potential of Big Data Analytics in Life Sciences and Healthcare 2The Foundation for Prader-Willi Research Receives $1M Contribution in Support of Clinical Initiatives 2Grace European Facility Receives GMP Excipient Certification for SYLOID® FP Silica Gel 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 3
... from the medical community in Europe and the U.S. examined ... disease and sepsis, and in cardiac surgery, during CSL ... in Clinical Fluid Management ." (Logo: ... frank and provocative exchange about the uses and effectiveness of ...
... Inovio Pharmaceuticals, Inc. (NYSE Amex: INO ) ... of Pathology & Laboratory Medicine, University of Pennsylvania, and ... been elected a fellow in the American Association for ... the "father of synthetic DNA vaccines," is being honored ...
... Researchers at Northwestern University have developed a new ... could be a step toward the creation of ... its many promising attributes, graphene is a one-atom ... strength and conductivity. Among graphene,s many possible applications ...
Cached Biology Technology:Medical Experts Who Participated in CSL Behring's Key Issues Dialogue Prefer Albumin for Fluid Management 2Medical Experts Who Participated in CSL Behring's Key Issues Dialogue Prefer Albumin for Fluid Management 3Inovio's Scientific Advisory Board Chairman Elected as a Fellow by the American Association for the Advancement of Science 2Inovio's Scientific Advisory Board Chairman Elected as a Fellow by the American Association for the Advancement of Science 3Inovio's Scientific Advisory Board Chairman Elected as a Fellow by the American Association for the Advancement of Science 4A step toward better electronics 2
Gel Loading Buffer contains a precipitant to ensure that the samples sink into the wells and a tracking dye to allow the user to follow the progress of electrophoresis....
Rabbit anti Xanthine Oxidase Xanthine Oxidase, Bovine Buttermilk...
Mouse polyclonal antibody to QPRT - quinolinate phosphoribosyltransferase (nicotinate-nucleotide pyrophosphorylase (carboxylating))...
... is the only PCR system that ensures ... time. It provides accuracy, consistency, and dependability ... the property of the DNA templates. This ... a unique blend of thermostable enzymes that ...
Biology Products: