Navigation Links
A buffet for early human relatives

through the enamel, and museum curators wouldn't like that."

Passey, who is working on his Ph.D. degree, "really made terrific advances in the lab to make this [study] possible," Cerling says.

The laser was used to remove samples at various points along the length of the tooth, which is marked by tiny ridges called perikymata. They run parallel to the tooth's crown and represent tooth growth, similar to tree rings. Perikymata are produced under the gums during the animal's juvenile years, when teeth are growing.

Each laser sampling vaporized enamel that formed during several months and thus represented what Paranthropus ate during that period. By taking several samples off the length of each tooth, the researchers reconstructed a few years of each creature's diet.

When the laser is used, the vaporized enamel is confined within a cylindrical chamber a few inches long. Carbon from carbonate in tooth enamel combines with oxygen to produce carbon dioxide gas, which then is analyzed by the mass spectrometer.

Your Teeth are What You Eat

If the sample has a relatively high ratio of carbon-13 to carbon-12, it means the early human relative was eating a diet rich in C4 plants most commonly found on the African savanna, such as seeds and roots from grasses, and grass-like plants called sedges, which include tubers. They also may have eaten animals that grazed on C4 plants.

If a sample has a relatively low ratio of carbon-13 to carbon-12, it means Paranthropus was eating C3 plants, including the leaves and fruits of trees and shrubs, as well as forbs, which are broadleaf herbs that are not grasses. Forests contain almost entirely C3 plants. African savanna has both C3 and C4 plants.

Analyses of the Paranthropus teeth revealed that the early human relatives had diets that varied in the proportion of C3 and C4 plants both seasonally and from year to year. The year-to-year variation in
'"/>

Source:University of Utah


Page: 1 2 3 4

Related biology news :

1. Deep sea buffet for bone-devouring worms
2. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
3. Neuronal traffic jam marks early Alzheimers disease
4. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
5. In the migratory marathon, parasitized monarchs drop out early
6. Test for early detection of prostate cancer shows promise
7. PET/CT can identify new cancer lesions at early stage, allowing for prompt treatment
8. Confocal imaging promises early detection of skin cancer
9. Measles Deaths Worldwide Drop By Nearly 40% Over Five Years
10. Oldest cranial, dental and postcranial fossils of early modern European humans confirmed
11. A whole lot of shaking goin on triggers early hatching in red-eyed tree frogs
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: buffet for early human relatives

(Date:8/29/2014)... release is available in German . ... players in the natural nitrogen cycle on Earth and ... bacteria were thought to depend on nitrite as their ... by Holger Daims, a microbiologist at the University of ... hydrogen as an alternative source of energy. The oxidation ...
(Date:8/29/2014)... MO. - In a cell,s nucleus, chromosomal DNA ... histones, an amalgam biologists call chromatin. Until about ... nuclear "sidekick," the mere packing material around which ... biologists have developed a greater appreciation for how ... investigators from multiple research institutions studying the sequence ...
(Date:8/28/2014)... TX Invasives is now available from the Lady Bird ... Austin for identifying harmful non-native plant, insect and other ... United States cause about $137 billion in economic and ... waterways, kill native plants and more. , "By having ... where invasive species occur, we,re more likely to catch ...
Breaking Biology News(10 mins):Hydrogen powers important nitrogen-transforming bacteria 2Hydrogen powers important nitrogen-transforming bacteria 3'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 2'K-to-M' histone mutations: How repressing the repressors may drive tissue-specific cancers 3Mobile app makes ID of harmful plants, insects in Texas a snap 2
... The National Institutes of Health has awarded Dr. Daniel Geschwind, ... a five-year, $10 million grant to continue his research on ... his investigations to include the genetics of autism in African ... fund collaborative work by Geschwind and experts at other autism ...
... A University of Alberta researcher has identified some of ... long distances. , Working together with an international ... examined unusual claw marks left on a river bottom ... major travel-way for dinosaurs., Alongside easily identified fossilized footprints ...
... N.Y. As the body ages, the physical effects ... becomes harder. But there are also less visible processes ... at work, which may contribute to age-related brain defects. ... the journal Nature Neuroscience CSHL Associate Professor ...
Cached Biology News:Autism in black and white: NIH grant helps scientist study disorder in African Americans 2CSHL neuroscientists show 'jumping genes' may contribute to aging-related brain defects 2CSHL neuroscientists show 'jumping genes' may contribute to aging-related brain defects 3
(Date:8/29/2014)... Albany, New York (PRWEB) August 29, 2014 ... be valued at $5.6 billion in 2019. It ... 18.1% from 2013 to 2019, and was valued ... research report published by Transparency Market Research. , ... please visit: http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research ...
(Date:8/29/2014)... PA (PRWEB) August 29, 2014 Pittcon ... Hub MacDonald, and colleague Koichiro Matsuda, Horiba Scientific, have ... on September 5, 2014. JASIS , Asia’s largest ... 3-5, 2014, in Makuhari Messe, Japan. , The ... Tools for Bioanalysis from Single Molecules to Single Cells” ...
(Date:8/29/2014)... Local veterinarian, Dr. Keith Clement, and his ... to participate in an investigational study of donor stem ... of this study is to determine if a single ... arthritically affected joints can help reduce pain and inflammation ... current investigational study must be older than nine months, ...
(Date:8/29/2014)... 29, 2014 Due to a misstatement posted ... the Adult Stem Cell Technology Center, LLC ( ASCTC ) ... cell therapy research that might benefit ALS patients. Because ... new stem cell technologies and therapeutic applications, FRC listed ASCTC ... Challenge donors who wish not to support research that ...
Breaking Biology Technology:Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 3
... Pharma ... SOMERVILLE, Mass., May 20 Spotfire, a,division of TIBCO ... Senior Director Life Sciences Analytics, will present,Applying Next Generation Business ... Conference being held May 20 & 21 in Basel,Switzerland. Mr. ...
... a considerable impact on many aspects of modern ... the human frontier, robotics is also vigorously engaged ... Interacting, exploring, and working with humans, the new ... The prospect of practical robots among humans follows ...
... Forward-Looking IVUS technology platform expected to enable, Volcano to ... ... therapeutic devices, SAN DIEGO, May 19 Volcano Corporation,(Nasdaq: ... and Optical Coherence Tomography (OCT) products designed,to enhance the diagnosis and ...
Cached Biology Technology:TIBCO Spotfire Puts the Spotlight on Screening at InfoTech for Pharma and Biotech 2TIBCO Spotfire Puts the Spotlight on Screening at InfoTech for Pharma and Biotech 3Robots moving closer to humans 2Volcano Announces Acquisition of Novelis, Inc. 2Volcano Announces Acquisition of Novelis, Inc. 3Volcano Announces Acquisition of Novelis, Inc. 4Volcano Announces Acquisition of Novelis, Inc. 5Volcano Announces Acquisition of Novelis, Inc. 6Volcano Announces Acquisition of Novelis, Inc. 7
Recognizes the VZV nucleocapsid by indirect immunofluorescence and immunoprecipitation. Shows cross-reactivity to HSV....
Rabbit polyclonal to Orexin Prepro ( Abpromise for all tested applications). entrezGeneID: 3060 SwissProtID: O43612...
Adenylate kinase isoenzyme 6...
AK6 Antibody...
Biology Products: