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:7/27/2014)... have shown the potential for global climate change to ... most part, ignored the interactions between increasing temperature and ... to damage crops. , A new study involving researchers ... significant, suggesting that policymakers need to take both warming ... , The study looked in detail at global production ...
(Date:7/25/2014)... era, 100,000s of people lived on the land now ... to control the availability of plants they used for ... use fire to maintain desired habitat and natural resources. ... Service,s Pacific Southwest Station, will lead a field ... during the Ecological Society of America,s 99th Annual Meeting, ...
(Date:7/25/2014)... scientists from 25 countries and 35 states will ... the Genetics Society of America (GSA) next week ... conference will feature close to 500 presentations (including ... including gene expression and regulation, functional genomics, chemical ... and a variety of diseases. , Of ...
Breaking Biology News(10 mins):Study: Climate change and air pollution will combine to curb food supplies 2Study: Climate change and air pollution will combine to curb food supplies 3Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3Yeast meeting to showcase latest breakthroughs in genetics and molecular biology 2
... in a lab that set up small pond ecosystems for experiments ... duplicate pond communities with a given experimental treatment," he says. ... of these species, and eight of the other species, and 15 ... every replicate would do its own thing and nothing would be ...
... When it comes to potentially doubling the output of the ... the spit. Researchers at Cornell University, as well as ... discovered that when a major South American pest infests potato ... this increased yield, they write in the peer-reviewed journal ...
... 2010 News media and others interested in the chemical ... of American Chemical Society (ACS) Webinars, focusing on tips on ... way. Scheduled for Thursday, June 3, from 2 ... "Lindy" Harrison, the instructor for "Effective Technical Writing Short Course" ...
Cached Biology News:The great pond experiment: Regional vs. local biodiversity 2The great pond experiment: Regional vs. local biodiversity 3To double spud production, just add a little spit 2
(Date:7/25/2014)... Amgen (NASDAQ: AMGN ) announced ... per share dividend for the third quarter of 2014. ... to all stockholders of record as of the close ... About Amgen Amgen is committed to unlocking the potential ... discovering, developing, manufacturing and delivering innovative human therapeutics. This ...
(Date:7/25/2014)... WABC Radio show out of New York ... Young will be hosting California-based Vet-Stem, Inc.’s Founder and CEO, ... in pets. Dr. Harman first visited the show in ... for pets suffering from osteoarthritis and other degenerative diseases, as ... forward. , Young has invited Dr. Harman back to dial ...
(Date:7/25/2014)... 25, 2014 At the request of ... a 60-day extension for the public comment period (Docket ... for Model Aircraft established by Congress as part of ... 60-day extension establishes the new deadline for comments as ... of Transportation/FAA notice published in the Federal Register on ...
(Date:7/24/2014)... , July 24, 2014  Now available is ... home. Rehealth Regenerative Therapies , located in ... other physically active people a new health option: ... Regardless of age, countless patients suffer from joint and ... such as muscle tears, torn rotator cuff, tennis elbow, ...
Breaking Biology Technology:Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Robert J. Harman, DVM, Founder and CEO of Vet-Stem, Inc. to Join New York Radio Host Lorry Young in Upcoming Episode of A “Paws” For Your Pet 2Robert J. Harman, DVM, Founder and CEO of Vet-Stem, Inc. to Join New York Radio Host Lorry Young in Upcoming Episode of A “Paws” For Your Pet 3FAA Grants Comment Extension at the Request of AMA 2Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3
... DIEGO, March 28, 2012 OncoSec Medical Incorporated ... Medical System (OMS) ElectroOncology therapies to treat solid tumor ... institutional investors of an aggregate of 31,000,000 shares of ... registered public offering.  Additionally, investors received Warrants to purchase ...
... 2012 Soligenix, Inc. (OTCBB: SNGX) (Soligenix or the ... financial results for the year ended December 31, 2011. ... December 31, 2011 were $7.7 million as compared to ... revenues was a result of a $5.0 million non-refundable ...
... computer chips are in demand. RUB physicists have discovered ... Dr. Padma Kant Shukla and Dr. Bengt Eliasson found ... charged potential makes it possible to combine positively charged ... this way, current can be conducted much more quickly ...
Cached Biology Technology:OncoSec Closes $7.75 Million Public Offering 2OncoSec Closes $7.75 Million Public Offering 3Soligenix Reports Year-End 2011 Financial Results and Highlights Recent Accomplishments 2Soligenix Reports Year-End 2011 Financial Results and Highlights Recent Accomplishments 3Soligenix Reports Year-End 2011 Financial Results and Highlights Recent Accomplishments 4Soligenix Reports Year-End 2011 Financial Results and Highlights Recent Accomplishments 5Soligenix Reports Year-End 2011 Financial Results and Highlights Recent Accomplishments 6Soligenix Reports Year-End 2011 Financial Results and Highlights Recent Accomplishments 7When ions get closer 2