Navigation Links
Scientists trace evolutionary history of what mammals eat
Date:4/18/2012

a group that includes primates, bears, dogs and foxes--came from ancestors that primarily ate plants, or animals, but not both, said paper co-author Samantha Price of the University of California Davis.

While omnivorous mammals weren't always that way, plant-eaters and meat-eaters have diversified within a more well-worn path.

Radical shifts were unlikely for these animals. Mammals that eat meat for a living, for example, didn't give up their taste for flesh without transitioning through an omnivorous stage first.

"Direct transitions from carnivory to herbivory were essentially nonexistent," said co-author Louise Roth of Duke University.

"It's an intuitive result because it takes very different kinds of equipment to have those kinds of diets."

"Plant- and animal-based foods require different digestive chemistries and different processing mechanisms in the mouth and stomach," said co-author Samantha Hopkins of the University of Oregon.

The kinds of teeth adapted for tearing and slicing meat are different than the large, flat-topped molars adapted for grinding nuts and roots.

"It makes sense that you couldn't easily transition from one to the other in one step," Price said.

The researchers also found that diet is linked to how fast mammals spawn new species.

As new species arise and others go extinct, the plant-eaters proliferate faster than their meat-eating counterparts, with omnivores lagging behind both groups.

"If there was an evolutionary race to evolve 100 species, it would take three times longer for omnivores compared to herbivores, and carnivores would be in the middle," Price said.


'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Scientists find neural stem cell regulator
2. Scientists identify FLT3 gene as a valid therapeutic target in acute myeloid leukemia
3. Scientists complete first-ever emperor penguin count from space
4. Scientists count penguins from space
5. Researchers use game to change how scientists study disease outbreaks
6. Salk scientists redraw the blueprint of the bodys biological clock
7. Scientists study the catalytic reactions used by plants to split oxygen from water
8. Scripps Research Institute scientists find promising vaccine targets on hepatitis C virus
9. Dartmouth scientists track radioactive iodine from Japan nuclear reactor meltdown
10. Genetic mutation depicted in van Goghs sunflower paintings revealed by scientists
11. UGA scientists reveal genetic mutation depicted in van Goghs sunflower paintings
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists trace evolutionary history of what mammals eat
(Date:8/28/2014)... Minn. A Mayo Clinic researcher and his collaborators ... up and enhance the process of re-engineering cells for ... uses network biology methods to aid stem cell engineering. ... engineering are described in two back-to-back papers in the ... a broad range of uses for all types of ...
(Date:8/28/2014)... identified the developmental on-off switch for Streptomyces , ... two-thirds of the world,s naturally derived antibiotic medicines. ... it is possible to manipulate this switch to make ... appearing August 28 in Cell , found that ... and a larger protein called BldD ultimately controls whether ...
(Date:8/28/2014)... good examples of complex systems. Their infrastructure equipment ... for cooling, transport to supply fuel, and ICT ... the network chain is interconnected with a wider ... team of UK-based scientists has studied various aspects ... have been published in EPJ B by Gaihua ...
Breaking Biology News(10 mins):New tool aids stem cell engineering for medical research 2Small molecule acts as on-off switch for nature's antibiotic factory 2Small molecule acts as on-off switch for nature's antibiotic factory 3Inter-dependent networks stress test 2
... computer-based text-searching tool developed by UT Southwestern Medical Center ... in a database for similarities, providing a more efficient ... offering scientific journal editors a new tool to thwart ... efficient at flagging publications that are highly similar, said ...
... automated sensors may soon help NOAA scientists better predict ... ice will melt, and whether soggy Pacific storms will ... of NOAAs Unmanned Aircraft Systems program. NOAA recently ... use of the crewless vehicles for wide-ranging research designed ...
... of this message: , About the Ocean Sciences ... Book Hotel Rooms by 4 February 2008 Abstracts and ... Ocean Sciences Meeting , This years meeting will offer ... and Earths water wherever it is found, from mountain ...
Cached Biology News:Computer-based tool aids research, helps thwart questionable publication practices 2Computer-based tool aids research, helps thwart questionable publication practices 3NOAA invests $3 million for unmanned aircraft system testing 2Media advisory -- 2008 Ocean Sciences Meeting 2Media advisory -- 2008 Ocean Sciences Meeting 3Media advisory -- 2008 Ocean Sciences Meeting 4
(Date:8/28/2014)... in spintronics, an electronic which is not only ... on their spin and the spin-related magnetism. Spin-charge ... signals and vice versa. Recently, the research group ... Physics at Johannes Gutenberg University Mainz in collaboration ... has for the first time realised a new, ...
(Date:8/28/2014)... 2014 The ability for organizations to ... will allow individuals to perform at the highest of ... employers looking to compete in this post–recession era. ... trend, as the sector increasingly focuses on the importance ... will have real results on the organization's development and ...
(Date:8/28/2014)... , Aug. 28, 2014   SunTrust Robinson Humphrey ... industry veterans to its equity research team in ... ongoing expansion in equity research demonstrates our commitment ... insights to enhance their investment decision making," said ... STRH.  "We continue to make significant investments in ...
(Date:8/28/2014)... , Aug. 28, 2014  Armetheon, Inc. ( ... novel mid- to late-stage cardiovascular drug candidates, today ... its first round of financing. The Series A ... Hercules Bioventures with participation from investors that included ... executive, Dr. Larry Hsu , the founder ...
Breaking Biology Technology:A new, tunable device for spintronics 2A new, tunable device for spintronics 3Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 2SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 3Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3
... 7 Medicsight PLC, a subsidiary,of MGT Capital ... industry leader in the,development of Computer-Aided Detection (CAD) ... received approval from the Brazilian regulatory,agency, Agencia Nacional ... David Sumner, Chief Executive of Medicsight, commented: "This ...
... DENVER, Aug. 7 Quest Product Development, ... a $1,000,000 Small Business,Technology Transfer grant by ... the development of a next-generation endoscope. MicroFlex,technology, ... alloys and,micro-actuators that allow active control over ...
... AutoImmune Inc. (OTC,Pink Sheets: AIMM) today reported a net ... the three months ended June 30, 2008, compared with,a net ... diluted, for the,three months ended June 30, 2007. For the ... or $0.01 per share basic and diluted, compared,with net loss ...
Cached Biology Technology:Medicsight Receives Brazilian State Food and Drug Administration Approval for ColonCAD Software 2Medicsight Receives Brazilian State Food and Drug Administration Approval for ColonCAD Software 3NIH Funds $1M Research at Quest Product Development and University of Colorado for New Digitally-Controlled Endoscopes 2AutoImmune Inc. Reports 2008 Second Quarter Financial Results 2AutoImmune Inc. Reports 2008 Second Quarter Financial Results 3
... Reagent B - Permeabilisation medium LEUCOPERM ... suspension with Reagent A and then permeabilising ... gives antibodies access to intracellular structures and ... cells intact. Specific formulations reduce background staining ...
... Rabbit polyclonal to JNK1 (phospho T183 + Y185) ... internal domain containing phosphorylated T183/Y185. Reactivity / ... Not yet tested in other species. Background ... including the ERK, JNK, and p38 kinases. The ...
... Dako Target Retrieval Solution, pH 9 ... Tris/EDTA buffer, pH 9, intended for heat-induced ... It is well-suited for use on formalin-fixed, ... Compared with 0.01 mol/L citrate buffer, pH ...
... has been designed to provide a thin film-like barrier ... a slide. This barrier creates the proper surface ... area on the slide. PAP Pen contains a ... It can be removed, if desired, by xylene ...
Biology Products: