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:11/3/2014)... Research and Markets has announced the addition of a ... to their offering. This report describes ... started to play an important role in the practice of ... bone marrow transplants. Role of cells in drug discovery is ... of medical practice. Stem cells are discussed in ...
(Date:11/2/2014)... month,s issue of Physics World , James Dacey ... "valley of death" to take their innovations from the ... the gruelling challenge facing all start-up companies as they ... physicists because of two main factors: physics-based inventions are ... often turn out to be a lot more complicated ...
(Date:10/31/2014)... received two major government grants totaling nearly $28 million. ... to continue two major foci of study, one involving ... precision medicine. , The first, a combined grant from ... National Institute for Mental Health for $16.5 million, will ... CEGS. , The second grant, for $11.3 million, is ...
Breaking Biology News(10 mins):Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3The 'valley of death' facing physics start-ups 2Transforming 'big data' into knowledge 2Transforming 'big data' into knowledge 3
... State University and Diversa Corporation have discovered that the smallest ... structure, of any independent cell - and yet it dominates ... die, and plays a huge role in the cycling of ... not always better. , In a publication today in the ...
... team of international scientists leaves today on a month-long ... of Southwest China, an extension of the great Himalayan ... a scientific and cultural journey to explore one of ... expedition begins today with a month-long exploration in China ...
... to a new analysis of more than 400 years of ... river basins. , By using data from tree rings, University ... rivers fluctuated in synchrony during periods of severe drought. The ... and covers waterways from the states of Arizona, Colorado, New ...
Cached Biology News:Microbe has huge role in ocean life, carbon cycle 2Team of international scientists departs today to discover the unknown in China's Himalayan region 2Team of international scientists departs today to discover the unknown in China's Himalayan region 3Past droughts geographically widespread in the West, according to tree-ring data 2Past droughts geographically widespread in the West, according to tree-ring data 3
(Date:11/15/2014)... The redesigned ActiGraph Link expands upon ... measurement platform with a rich feature set that ... new channels of sensor data captured by a ... Smart technology, the ActiGraph Link supports wireless heart ... ActiGraph’s cloud-based Study Admin platform, giving academic and ...
(Date:11/15/2014)... 2014 The "Operating Room Management ... by Application (Perioperative, Preoperative, operating room Scheduling), by ... - Global Forecast to 2019.” defines and segments ... and forecast of value by product, such as ... this, the value and volumes of operating room ...
(Date:11/15/2014)... LONDON , Nov. 14, 2014 Algenol Biofuels ... 6th at the Oceanographic Museum of Monaco ... CleanEquity Monaco is an annual invitation-only event hosted by ... investment bank. Other partners and sponsors include ... Foundation, Covington & Burling, Cranfield University, PR Newswire, the Monte-Carlo ...
(Date:11/12/2014)... November 12, 2014 The “Pen Needles ... 10mm, and 12mm), Therapy (Insulin, Growth Hormones, Glucagon-like peptide) ... & Global Forecast to 2019”analyzes and studies the major ... 101 market data tables and 51 figures spread through ... by Type (Standard and Safety), by Needle Length (4mm, ...
Breaking Biology Technology:ActiGraph Launches GT9X Link Activity Monitor 2Operating Room Management Market Worth $4,551.1 Million by 2019 - New Report by MarketsandMarkets 2Operating Room Management Market Worth $4,551.1 Million by 2019 - New Report by MarketsandMarkets 3Operating Room Management Market Worth $4,551.1 Million by 2019 - New Report by MarketsandMarkets 4Algenol Biofuels Selected to Present at CleanEquity Monaco 2015 2Pen Needles Market worth $2,105 Million by 2019 - New Report by MarketsandMarkets 2Pen Needles Market worth $2,105 Million by 2019 - New Report by MarketsandMarkets 3Pen Needles Market worth $2,105 Million by 2019 - New Report by MarketsandMarkets 4
... Generex Biotechnology Corporation (Nasdaq: GNBT, www.generex.com ) announced ... to the Company and a member of the Company,s ... of the reverse stock split proposal being considered at ... "Having been intimately involved in the drug development world ...
... remote wave sensing by a team of Rensselaer Polytechnic ... chemical, biological agents and illegal drugs from a distance ... terahertz (THz) wave technology, has great potential for homeland ... clothing and packaging materials and can identify immediately the ...
... Recently, academic debate has been swirling around the existence ... of phenomena, including photosynthesis, the process by which organisms ... suggested that entanglement (the quantum interconnection of two or ... separated in physical space) could be occurring in the ...
Cached Biology Technology:Generex Provides Additional Reverse Stock Split Information for the Consideration of Stockholders 2Generex Provides Additional Reverse Stock Split Information for the Consideration of Stockholders 3Generex Provides Additional Reverse Stock Split Information for the Consideration of Stockholders 4A revolutionary breakthrough in terahertz remote sensing 2
All serum is collected from adult animals aged 6 months or older. Certified U.S. orgin. Pricing: $35/unit for 1 - 10 units...
3'-O-Methylguanosine 5'-Triphosphate, Sodium, 1 umol. Category: Nucleotides & Enzymes & Biochemicals, Nucleotides, Additional Nucleotide Products....
Porcine Serum Available Anticoagulants: N-02: Citrate N-04: Heparin (Na) N-06: K2EDTA N-08: Potassium Oxalate N-10: EDTA (Na) N-03: Alsevers N-05: ACD N-07: CPD N-09: K3EDTA N-11...
... adult normal paraffin tissue array is ... proteins of interest in extensive panels ... Rat brain, heart, kidney, liver, lung, ... arrayed on positively charged glass slide. ...
Biology Products: