Navigation Links
Dietary flexibility may have helped some large predators survive after last ice age
Date:5/8/2013

During the late Pleistocene, a remarkably diverse assemblage of large-bodied mammals inhabited the "mammoth steppe," a cold and dry yet productive environment that extended from western Europe through northern Asia and across the Bering land bridge to the Yukon. Of the large predators--wolves, bears, and big cats--only the wolves and bears were able to maintain their ranges well after the end of the last ice age.

A new study led by researchers at the University of California, Santa Cruz, suggests that dietary flexibility may have been an important factor giving wolves and bears an edge over saber-toothed cats and cave lions.

"We found that dietary flexibility was strongly species-specific, and that large cats were relatively inflexible predators compared to wolves and bears. This is a key observation, as large cats have suffered severe range contractions since the last glacial maximum, whereas wolves and bears have ranges that remain similar to their Pleistocene ranges," said Justin Yeakel, first author of a paper on the new findings published in the Proceedings of the Royal Society B.

Yeakel, now a postdoctoral researcher at Simon Fraser University in British Columbia, worked on the study as a graduate student at UC Santa Cruz with coauthor Paul Koch, professor of Earth and planetary sciences at UCSC. The other coauthors are Paulo Guimares of the University of So Paolo, Brazil, and Herv Bocherens of the University of Tbingen, Germany.

The researchers based their findings on an analysis of stable isotope ratios, chemical traces in fossil bones that can be used to reconstruct an animal's diet. They used previously published stable isotope datasets to reconstruct predator-prey interactions at six sites located from Alaska to western Europe. The sites covered a range of time periods before, during and after the last glacial maximum, the period around 20 to 25 thousand years ago when the ice sheets reached their greatest
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Zebrafish research shows how dietary fat regulates cholesterol absorption
2. Neuroprotective dietary supplements for chronic spinal cord injury
3. Research provides new insights into dogs natural feeding behavior and finds they target a daily dietary intake that is high in fat
4. New health-economic model shows benefits of boosting dietary calcium intake
5. Dietary shifts driving up phosphorus use
6. International study: Excess dietary salt may drive the development of autoimmune diseases
7. Canadians support interventions to reduce dietary salt
8. National survey highlights perceived importance of dietary protein to prevent weight gain
9. 2001-2002 drought helped propel mountain pine beetle epidemic, says CU study
10. Building the European Unions Natura 2000 -- the largest ever network of protected areas
11. Interventional radiology: Potential breakthrough to treat mens enlarged prostate
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/17/2014)... Why do male ... reproduce? And why are there two sexes anyway? These and ... the research journal Molecular Human Reproduction published today ... University Bielefeld has compiled this special issue on sperm competition. ... copulate with several males in quick succession – chimpanzees are ...
(Date:10/16/2014)... human body. Battles are won, lost or sometimes ... stalemate—known as tumor dormancy—can last up to 25 ... is poorly understood. , A new computational ... a Professor of Chemistry at Princeton University, may ... the switch to a malignant state. Published today ...
(Date:10/16/2014)... have challenged conventional thinking on how the bowel lining ... for how bowel cancer starts. , The researchers produced ... regenerating the ,crypts, that are a feature of the ... in bowel cancer development, a controversial finding as scientists ... Using 3D imaging technologies, Dr Chin Wee Tan and ...
Breaking Biology News(10 mins):Sperm wars 2Modeling tumor dormancy 2Cryptic clues drive new theory of bowel cancer development 2
... -- The Society of American Foresters has named Louisiana ... Director A. Gordon Holley as its 2012 Carl Alwin ... the 2012 Society of Foresters National Convention held Oct. ... outstanding performance in the field of forestry education. This ...
... . . . U.S. Forest Service and ... levels of ozone may amplify the impacts of higher ... and other water bodies. Such effects could potentially reduce ... in the southeastern United States. Using data on atmospheric ...
... A team led by researchers at the University of ... "superbug" methicillin-resistant Staphylococcus aureus (MRSA) is prevalent ... well known for causing difficult-to-treat and potentially fatal bacterial ... it has also been infecting otherwise healthy people in ...
Cached Biology News:Louisiana Tech University professor earns national honor from Society of American Foresters 2November 2012 story tips 2Superbug MRSA identified in US wastewater treatment plants 2
(Date:10/19/2014)... Mass. , Oct. 19, 2014 NextCODE Health, ... the whole genome in real time, today announced the launch ... NextCODE Exchange , at the American Society of Human ... . To learn more, sign up and apply for free ... its unique features and benefits can be viewed here ...
(Date:10/19/2014)... October 19, 2014 The report "Chocolate, ... Share, Trade, Prices, Geography Trend and Forecast (2011 - ... category, and geography and studies the major market drivers, ... America, Europe, and Asia. , The global chocolate market ... $98.3 billion in 2016 at an estimated CAGR of ...
(Date:10/18/2014)... The “Human Insulin Market- by Product ... Modern Human Insulin (Rapid Acting, Long Acting, Premixed)], ... Others) - Forecast to 2018” provides a detailed ... current market trends, and strategies impacting the global ... forecasts of the revenue and share analysis. , ...
(Date:10/18/2014)... Asia-Pacific hardware encryption display market report defines and segments ... of revenue. This market was valued $5,154.0 million in ... 2018, at a CAGR of 58.4% from 2013 to ... hardware encryption market report, to get an idea of ... of the segmentation of the market, and is supported ...
Breaking Biology Technology:The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 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 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 2Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 3Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 5The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 3
... THRM ), a leader in non-invasive tissue ... will present at the 2008 Thomas Weisel,Partners Healthcare ... The,Company,s presentation is scheduled for Wednesday, September 3, ... President and Chief,Executive Officer of Thermage, will review ...
... 27 The Board of,Directors, meeting today under the chairmanship of Albert Saporta, approved,STALLERGENES, half year consolidated financial statements:, (EUR millions) ... 08/07 ... of % ... sales change, Sales ...
... Aug. 27 MichBio, the association for,Michigan,s biosciences ... Showcase to its program on day one of ... the Rock Financial ShowPlace Novi, MI. The,event will ... introduce,their bioscience technologies and emerging companies to an ...
Cached Biology Technology:Stallergenes: First Half Year 2008: A 19% Increase in Operating Profit and Net Profit 2Stallergenes: First Half Year 2008: A 19% Increase in Operating Profit and Net Profit 3Start-Up and Emerging Biotech Companies Will Tell Their Stories at Biosciences Showcase Planned for MichBio Expo 2
Packaging: package with 500 l Patent/trademark/license (electronic): (r) Registered trademark of Molecular Probes...
... Rotofor purification system, 100-120 V, is used ... isoelectric focusing (IEF). The system includes both ... ml) focusing chambers, chassis, harvesting apparatus, cooling ... (pH 3-10), 60 ml syringe, colored protein ...
...
... B-Phycoerythrin Labeling Kit - NH2 is primarily ... for immunostaining and cellular proteins for tracing. ... has succinimidyl group (NHS), and can easily ... of IgG or other proteins without any ...
Biology Products: