Navigation Links
Diet secrets of 'the Royals'
Date:4/13/2009

ch have higher ratios of carbon-13 to carbon-12.

By analyzing carbon isotope ratios along the length of a single elephant hair, the researchers could see the twice-annual switch when rain falls and the elephants go from eating mostly trees and shrubs to eating mostly grasses, and then back again.

The study found the elephants' average grass intake during the study was 21 percent of their diet. During the dry season, grass was about 15 percent of their diet, but that skyrocketed to 50 percent grass during rainy seasons. Grass consumption peaked at 60 percent during a particularly good rainy season after a prolonged drought, Cerling says, noting the elephants must have thought, "Finally, they have opened the restaurant."

Cerling says the researchers don't know why "the Royals" a group of 20 elephants including the four studied wandered off the reserve during the April-May 2003 rainy season, but when they did, tail hair carbon isotope levels showed they were eating only trees and shrubs and no grass. That was highly unusual, because even during the dry season they normally eat 15 percent grass.

"The impact of overgrazing by cattle on the typical wet season diet of elephants is clear," the researchers wrote. "Competition with cattle results in poor access to high-quality grass forage because cattle keep the grass very short and out-compete elephants."

The findings provide a hint that as Kenya's population continues to burgeon, and as global warming produces more droughts, increasing competition for grass with domestic cattle might threaten the elephants' ability to bulk up for pregnancy.

"We'd need quite a bit of data before we could say that, but it is clear the grass is providing nutrients they really want and presumably need for successful reproduction," Cerling says. "With increased drought, they may run into a reproductive wall."

Hydrogen and Oxygen:
'/>"/>

Contact: Lee Siegel
leesiegel@ucomm.utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Scientists unlock the secrets of C. difficiles protective shell
2. Caltech researchers help unlock the secrets of gene regulatory networks
3. DNA testing may unlock secrets of medieval manuscripts
4. Expeditions reveal gulf of Californias deep sea secrets, as well as human imprints
5. Uncovering secrets of life in the ocean
6. Landmark study unlocks stem cell, DNA secrets to speed therapies
7. The making of Dig It! the Secrets of Soil exhibit
8. Monash researchers uncover cancer survival secrets
9. Power of molecular imaging reveals secrets of the heart
10. Secrets of cooperation between trees and fungi revealed
11. Genetic tags reveal secrets of memories staying power in mice
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Diet secrets of 'the Royals'
(Date:7/31/2014)... have completed a 20-year study that looks at ... different times of the year. It finds that ... frame has no measurable negative consequences for the ... , The study was conducted by Gene Towne, ... fire chief, and Joseph Craine, research assistant professor, ...
(Date:7/31/2014)... experimental vaccine protected 100 percent of animal models against ... , which causes an intestinal disease that kills approximately ... print in Infection and Immunity . , ... non-human primates against the purified toxins produced by ... spore infection, a laboratory model that mimics the human ...
(Date:7/31/2014)... Edmond Becquerel first discovered the photovoltaic effect in 1839, ... power of sunlight for its own purposes. In a ... of the FASEB Journal , scientists ... power of sunlight by focusing on a naturally occurring ... evolution. This conservationor persistence over time and across speciessuggests ...
Breaking Biology News(10 mins):Study finds benefits to burning Flint Hills prairie in fall and winter 2Study finds benefits to burning Flint Hills prairie in fall and winter 3C. difficile vaccine proves safe, 100 percent effective in animal models 2Scientists shine bright new light on how living things capture energy from the sun 2
... that previously unrecognized substances released by algae blooms have ... interfere with the normal activity of reproductive hormones. The ... as potentially harmful to humans and aquatic animals, but ... are calling for a revision of environmental monitoring programs ...
... the establishment of the Jeffrey Modell Endowed Chair in ... at the Hospital,s Ruth and Tristram Colket, Jr. Translational ... pediatric immunologist Jordan S. Orange, M.D., Ph.D. The chair,s ... new ground in his ongoing research. Dr. Orange is ...
... the brain are characteristic features of Alzheimer disease. The ... that plays a central role in learning and memory, ... effect of tau protein is largely eliminated when the ... Max Planck Research Unit for Structural Molecular Biology at ...
Cached Biology News:Modell Chair in Pediatric Immunology established 2Tau-induced memory loss in Alzheimer's mice is reversible 2Tau-induced memory loss in Alzheimer's mice is reversible 3
(Date:7/31/2014)... Toronto, Canada (PRWEB) July 31, 2014 ... with some of the first transcriptome-wide analyses appearing ... a standard assay for RNA measurement. In the ... high throughput, more specific, work with smaller input ... special tissues (eg, blood samples). On the bioinformatics ...
(Date:7/31/2014)... Miami, Fla. (PRWEB) July 31, 2014 The ... for distribution of its monthly news magazine, Kidney Cancer News. ... have a presence on a website maintained by an international ... noted an immediate increase in viewers.” , This month’s program ... of kidney tumors analyzed in a recent study. Kidney ...
(Date:7/30/2014)... and PARIS , July 30, ... (EURONEXT: SAN and NYSE: SNY) today announced that the ... Administration (FDA) rare pediatric disease priority review voucher in ... alirocumab.  The priority review voucher entitles the holder to ... an expedited 6-month review from the filing date instead ...
(Date:7/30/2014)...  The Chicago Bears are excited to announce the ... in an effort to raise awareness of skin cancer. ... SPOT me™ skin cancer screenings at a preseason fan ... SPOT me™ is an educational campaign designed to inform ... of skin cancer, and encourages people to get screened ...
Breaking Biology Technology:The Evolution of RNA-Sequencing, Upcoming Live Webinar August 22 hosted by Xtalks 2Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 2Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 3Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 4Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 5Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 6Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 2Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 3Chicago Bears Join the American Academy of Dermatology in Fight against Skin Cancer 4
... N.Y., Sept. 5 BioSpecifics,Technologies Corp. (OTC Bulletin ... collagenase based products, announced today that,it has signed ... related,to its future royalty obligations for Peyronie,s disease ... one-time cash payment., BioSpecifics has modified its ...
... 4 Hologic, Inc.,(Nasdaq: HOLX ) today announced ... the Morgan Stanley Global Healthcare Unplugged,Conference being held September ... NY., Interested parties are invited to listen to ... September 9, 2008, at 1:35 PM.,Eastern Time on the ...
... COLLINS, Colo., Sept. 4 InVitria,( ... of animal free,products that enhance productivity, ... companies,in the biopharmaceutical, cell culture, life ... Sponsorship of Cambridge Healthtech,Institute,s 4th Annual ...
Cached Biology Technology:BioSpecifics Technologies Corp. Buys Down Royalties for Peyronie's Disease 2Hologic to Present at the Morgan Stanley Global Healthcare Unplugged Conference 2InVitria Sponsors Cambridge Healthtech's Optimizing Cell Culture Development Conference 2
Coverslips for Microarrays, 1. *Category: MICROARRAY ACCESSORIES....
S. O'Hare & C.K. Atterwill • In vitro toxicity techniques for regular lab use. Ex vivo techniques are also covered with the aim of reducing and refining the use of animals in the future....
... 2'-O-Methyltransferase converts Cap 0 (or Cap 0-like) ... 1 structure has been shown to increase ... 50%. This improvement is seen in Cap ... Capping System as well as those Cap ...
Form: Concentrated Applications: ELISA...
Biology Products: