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:10/15/2014)... German Gauß-Allianz has admitted Johannes Gutenberg University Mainz ... Rhineland-Palatinate science hub continues to maintain a significant ... , "The acceptance of Johannes Gutenberg University ... is a milestone in the national and international ... The state of Rhineland-Palatinate can be proud that ...
(Date:10/15/2014)... awarded the 44th Rosenstiel Award for Distinguished Work in ... exploring the mechanisms of genomic instability and its implications ... the second alumnus to win the Rosenstiel Award; the ... , Alt is the Charles A. Janeway Professor of ... and an investigator at the Howard Hughes Medical Institute ...
(Date:10/14/2014)... ATHENS, Ohio (Oct. 14, 2014)—It,s been millions of years ... but a team led by Ohio University scientists is ... to model airflow through dinosaur snouts. The research has ... not only breathe but to enhance the sense of ... pretty ,nosy, animals," said Ohio University doctoral student Jason ...
Breaking Biology News(10 mins):Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 3
... Society for Integrative and Comparative Biology (SICB), one of ... hold its annual meeting at the Hilton San Francisco, ... to 7, 2013. More than 1,500 scientists will present ... and biomechanics, offering journalists a rich assortment of news ...
... Barack Obama named University of Missouri researcher M. Frederick ... the highest honor bestowed by the country to scientists. ... Nano and Molecular Medicine at the University of Missouri, ... Radiology. "I am proud to honor these ...
... -- What happens when graduate students in biology are given ... the unknowns of genuine research, not worry about getting "good" ... course, one outcome has beenparadoxicallyan extraordinary level of new knowledge ... 21 issue of Science magazine, several scientists who ...
Cached Biology News:Integrative and comparative biologists to discuss latest research 2Integrative and comparative biologists to discuss latest research 3President Obama honors MU researcher with National Medal of Science 2Having serious fun in the MBL physiology course 2
(Date:10/20/2014)... 2014 OncLive® is ... Center at Thomas Jefferson University has joined its ... Strategic Alliance Partnership program, the Sidney Kimmel Cancer ... raise awareness of the Center’s cutting-edge research programs, ... Clinicians and other health care professionals from the ...
(Date:10/19/2014)... 2014 The Latin American hardware encryption ... Latin America with analysis and forecast of revenue. This ... is expected to reach $2,366.8 million by 2018, at ... Browse through the TOC of the Latin American hardware ... in-depth analysis provided. It also provides a glimpse of ...
(Date:10/19/2014)... The Asia-Pacific Bromine Market report defines and segments ... forecast of revenue. , Browse through the TOC ... get an idea of the in-depth analysis provided. ... in the Asia-Pacific bromine market, and is supported ... http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , Bromine is a volatile and ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The report ... Market Share, Trade, Prices, Geography Trend and Forecast (2011 ... sales category, and geography and studies the major market ... North America, Europe, and Asia. , The global chocolate ... 2010.to $98.3 billion in 2016 at an estimated CAGR ...
Breaking Biology Technology:Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4
... Inverness Medical Innovations, Inc. (NYSE: IMA ), a ... health at home through the merger of rapid diagnostics and ... quarter 2009 earnings on Tuesday, October 27, 2009. The Company ... (Eastern Time) on that date to discuss these results and ...
... The Colorado Center for Reproductive Medicine (CCRM) announced today a ... vitro fertilization (IVF) with comprehensive chromosome screening (CCS), an ongoing ... about 30% worldwide. , In May of 2007, CCRM ... of chromosomes in a few cells removed from the embryo ...
... ... and pricing research globally and Vendavo®, a leading provider of business-to-business price management and ... are now eligible for credit in the PPS Certified Pricing Professional (CPP) program. ... Atlanta, GA (PRWEB) ...
Cached Biology Technology:Inverness Medical Innovations Schedules Conference Call for 10:00 a.m. ET October 27, 2009 to Discuss Third Quarter 2009 Results 2Colorado Center for Reproductive Medicine Improves Pregnancy and Implantation Rates Using Comprehensive Chromosomal Screening of IVF Embryos 2Colorado Center for Reproductive Medicine Improves Pregnancy and Implantation Rates Using Comprehensive Chromosomal Screening of IVF Embryos 3Professional Pricing Society Announces Educational Partnership with Vendavo -- "PPS Accepting Vendavo Pricing Knowledge Series Awards to Certified Pricing Professional Program" 2Professional Pricing Society Announces Educational Partnership with Vendavo -- "PPS Accepting Vendavo Pricing Knowledge Series Awards to Certified Pricing Professional Program" 3Professional Pricing Society Announces Educational Partnership with Vendavo -- "PPS Accepting Vendavo Pricing Knowledge Series Awards to Certified Pricing Professional Program" 4