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

extent.

The study found that the diets of the large cats were similar in different locations, especially in the post-glacial period. Wolves and bears, in contrast, ate different things in different locations. Prey species on the mammoth steppes included bison, horses, yaks, musk oxen, caribou, and mammoths. The researchers noticed changes in predator diets coinciding with an increase in caribou abundance starting around 20,000 years ago.

"During and after the last glacial maximum, many predators focused their attention on caribou, which had been a marginally important prey resource before then," Yeakel said. "Large cats began concentrating almost solely on caribou in both Alaska and Europe. Wolves and bears also began consuming more caribou in Alaska, but not in Europe."

The cave lions and saber-toothed cats of the mammoth steppes were morphologically similar to modern lions, but they went extinct within the past 10,000 years. There were bears similar to modern bears, as well as the short-faced bear, which was larger than a polar bear and has since gone extinct. Interestingly, the short-faced bear is the only species that did not focus on caribou in the post-glacial period.

After the last ice age, a growing human population coincided with the demise of the mammoths and other large fauna of the mammoth steppes. Many species are still around, however, including wolves and bears. According to Yeakel, studies of past ecosystems can inform scientists' understanding of modern carnivores and their capabilities.

"If you look at wolves today, they are specialist carnivores preying on large herbivores like deer and elk, but when we look in the fossil record we see that wolves are remarkably flexible. Their environment today is fairly artificial compared to when they evolved," he said.

The study found that large-scale patterns of interactions differed between locations, but remained stable over time. In Alaska, there was
'/>"/>

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:12/22/2014)... Holiday Season may be the brightest ever for the ... long anticipated floodgates for consumer biometrics may finally be ... tablets, and wearable mobile devices that incorporate biometrics will ... nearly 4.8 billion biometric devices by 2020.   ...
(Date:12/19/2014)... Calif. , Dec. 18, 2014  23andMe, Inc., the leading ... that pinpoints fine-scale differences in genetic ancestry of individuals from ... Since immigrants first arrived more than four hundred years ago, ... a meeting place for peoples from different continents. This study ...
(Date:12/17/2014)... 2014 The Defense Logistics Agency is insourcing its ... counterfeit microcircuits from entering into its supply chain. ... anti-counterfeit initiative dubbed DNA marking. The capability will validate ... throughout the supply chain. The new quality control measures ...
Breaking Biology News(10 mins):First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3
... The National Science Foundation has awarded Iowa State ... million grant to establish the NSF Engineering Research ... The award is part of the National ... Program. The third-generation Engineering Research Centers are designed ...
... utilize small, short-lived animals (insects, worms, mice) under ... parasites, superabundant food in the laboratory. Oddly ... such animals in their harsh, stressful natural environments. ... actually age much more slowly in captive luxury ...
... Bats, ability to echolocate may have evolved more than once, ... of London scientists. Species of bat with the ability ... tree of life - some are more related to their ... of whether echolocation in bats has evolved more than once, ...
Cached Biology News:Iowa State wins $18.5M grant to create NSF Center for Biorenewable Chemicals 2Iowa State wins $18.5M grant to create NSF Center for Biorenewable Chemicals 3Iowa State wins $18.5M grant to create NSF Center for Biorenewable Chemicals 4Old before their time? Aging in flies under natural vs. laboratory conditions 2Molecular evolution is echoed in bat ears 2
(Date:1/22/2015)... , a precision medicine software company that has developed a ... genomic, imaging and other biomedical data in research and clinical ... CEO of Aspera, an IBM Company, to its board as ... "We are pleased to welcome Michelle to ...
(Date:12/25/2014)... December 25, 2014 The report “Service ... Product Type & Provider Type - Global Advancements, Worldwide ... with an in-depth analysis and forecasting of revenues. ... through 221 pages and in-depth TOC on “Service Quality ...
(Date:12/24/2014)... , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. (NASDAQ: ... areas, announced the closing of an underwritten public offering of ... to an aggregate 3,500,000 shares of common stock, at an ... The warrants have a per share exercise price of $5.00, ...
(Date:12/24/2014)... Solutions , Inc. (NASDAQ: BLFS ), a leading ... storage and cryopreservation freeze media and ... or the "Company"), today announced that it will hold its ... "Annual Meeting"). Because the expected date for the ...
Breaking Biology Technology:GenoSpace Expands Board with Appointment of Michelle Munson 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 3Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 4PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3BioLife Solutions Sets Date for Annual Meeting of Stockholders 2
... global climate change and population growth call for sweeping changes ... a group of prestigious scientists, including an expert in plant ... team, led by Nina Federoff, science and technology adviser to ... "critical need to get beyond popular biases against the use ...
... , -- Leading ... to Offer Innovative Resource for all Ages and Stages of the ... For the more than 1.5 million Americans living with ... is far less frequent on key topics that impact the quality ...
... ... will learn how Microsoft® products, such as SharePoint and Office 2007, can be configured to ... to provide a cost-effective FDA regulated Quality System. , ... Bedford, MA (PRWEB) February 11, 2010 -- Business Intelligence Solutions ...
Cached Biology Technology:Dramatic changes in agriculture needed as world warms and grows, researchers say 2Davis Phinney Foundation Launches 'Every Victory Counts' Program to Inform and Empower People to Live Well With Parkinson's 2Davis Phinney Foundation Launches 'Every Victory Counts' Program to Inform and Empower People to Live Well With Parkinson's 3Davis Phinney Foundation Launches 'Every Victory Counts' Program to Inform and Empower People to Live Well With Parkinson's 4Davis Phinney Foundation Launches 'Every Victory Counts' Program to Inform and Empower People to Live Well With Parkinson's 5Lunch and Learn Workshop for New Jersey-based FDA-Regulated Companies 2
Plasmid expressing the LacZ reporter gene....
Plasmid expressing Zeocin resistance gene....
... These 2800mL wide mouth PYREX Fernbach-style ... the center of the flask bottom to ... These triple baffled flasks have a Delong-style ... stainless steel closures. For plastic closures see ...
... The kit provides a simple and efficient ... normal c lture using annexin V magnetic ... phospholipid binding protein with high affinity for ... provides a simple and efficient means for ...
Biology Products: