Navigation Links
Being good moms couldn't save the woolly mammoth
Date:12/21/2010

New research from The University of Western Ontario leads investigators to believe that woolly mammoths living north of the Arctic Circle during the Pleistocene Epoch (approx. 150,000 to 40,000 years ago) began weaning infants up to three years later than modern day African elephants due to prolonged hours of darkness.

This adapted nursing pattern could have contributed to the prehistoric elephant's eventual extinction. The findings were published recently in the journal, Palaeogeography, Palaeoclimatology, Palaeoecology.

By studying the chemical composition of adult and infant mammoth teeth, Jessica Metcalfe, an Earth Sciences PhD student working with professor Fred Longstaffe, was able to determine woolly mammoths that once inhabited Old Crow, Yukon didn't begin eating plants and other solid foods before the age of two (and perhaps as late as three) and considers predatory mammals like saber-toothed cats and a lack of sufficient vegetation to be the secondary reasons for delayed weaning.

"In modern Africa, lions can hunt baby elephants but not adults. They can't kill adults. But they can kill babies and by and large, they tend to be successful when they hunt at night because they have adapted night vision," explains Metcalfe, who examined fossil specimens alongside Grant Zazula of the Yukon Paleontology Program. "In Old Crow, where you have long, long hours of darkness, the infants are going to be more vulnerable, so the mothers nursed longer to keep them close."

Metcalfe says delayed weaning by Old Crow mammoths may have further significance for understanding mammoth life histories and extinction.

"Today, a leading cause of infant elephant deaths in Myanmar is insufficient maternal milk production," offers Metcalfe. "Woolly mammoths may have been more vulnerable to the effects of climate change and human hunting than modern elephants not only because of their harsher environment, but also because of
'/>"/>

Contact: Jeff Renaud
jrenaud9@uwo.ca
519-661-2111 x85165
University of Western Ontario
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study suggests that being too clean can make people sick
2. Biodiesel from sewage sludge within pennies a gallon of being competitive
3. Selected highlights of the research being presented at the Experimental Biology 2010 meeting
4. The cost of being on your toes
5. Geneticists coordinate action to fight against traffic in human beings
6. Being a standout has its benefits, study shows
7. DNA against traffic in human beings
8. Fear of being laughed at crosses cultural boundaries
9. Ben-Gurion University of the Negev technology being developed for use in Jordan desalination plant
10. Now butterflies are also being counted in China, Australia and Israel
11. Scientists capture the first image of memories being made
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... Va. , Dec. 15, 2014 The Defense ... easier to detect and prevent counterfeit microcircuits from entering ... started performing an in-house microcircuit anti-counterfeit initiative dubbed DNA ... microcircuits while increasing their reliability throughout the supply chain. ...
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/9zq33j/global_chemical ) has ... Market 2015-2019" report to their offering. ... trend upcoming in this market is the increasing demand ... in recording of patient data for quick and correct ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition of the ... their offering. One major trend emerging ... advances in technology, it is important to upgrade biometric ...
Breaking Biology News(10 mins):Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... ( www.ucr.edu ) --A new study by University of ... the world,s only hybrid electric tugboat found that the ... of Los Angeles and Long Beach. Researchers at ... Research and Technology (CE-CERT) demonstrated the hybrid electric tugboat ...
... between sleeping and obesity is drawn tighter as a ... ( http://www.fasebj.org/content/early/2010/11/19/fj.10-172080.abstract ) study shows that what your ... obese or overweight by altering the function of genes ... pregnant primate females consuming a high-fat diet altered the ...
... Research work carried out at the Hebrew University of ... of the development of stem cells as a means ... or damaged tissues by using the patient,s own stem ... tissue development in the use of such cells. ...
Cached Biology News:Hybrid tugboat cuts emissions, University of California, Riverside study shows 2New sleep cycle discovery explains why fatty diets during pregnancy make kids obese 2Hebrew University research carries cautionary warning for future stem cell applications 2Hebrew University research carries cautionary warning for future stem cell applications 3
(Date:1/22/2015)... 22, 2015 Protocol Networks brings independent ... team of brand-neutral, independent consultants, Protocol Networks has recently ... that over the years, his company has attracted several ... of Plainfield, as well as others. With the success ...
(Date:1/22/2015)... 22, 2015 Controlled Substance Compliance Services ... helps companies check the legal requirements around using controlled ... China. , As their international operations expand and ... software solutions built as a result of the first ...
(Date:1/22/2015)... , Jan. 22. 2015  Varian Medical Systems (NYSE: ... been honored for its commitment to sustainability with inclusion on ... is the highest ranked healthcare equipment company among the Corporate ... the World Economic Forum at Davos, Switzerland ...
(Date:12/24/2014)... and NEW YORK , Dec. 24, 2014 ... advancing patient care in critical areas, announced the closing of ... and warrants to purchase up to an aggregate 3,500,000 shares ... share and $.01 per warrant.  The warrants have a per ...
Breaking Biology Technology:Protocol Networks Brings Independent Technology Consulting to the Constitution State 2Global Compliance Service for Controlled Substances to Expand to China 2Varian Honored Among World's 100 Most Sustainable Corporations 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3
... BC, March 20 /PRNewswire-FirstCall/ - Chromos Molecular,Systems Inc. ... a secured, convertible debenture agreement to borrow $400,000. ... to fund expenses associated with the,preparation of delinquent ... remaining assets of the Company. The principal and,interest, ...
... January 7,2008, Signalife received a deficiency letter from ... advised that Signalife would need to,comply with the ... under AMEX Rules 1003(a)(iii). This notification was,triggered by ... than,$50 million, which previously exempted Signalife from meeting ...
... as Interim President, HOUSTON, March 20 Nova ... marketer of ASTM quality biodiesel, announced,today that it has ... its Interim President. Mr. Zeidman has been a Nova ... Managing Director of the law firm,Greenberg Traurig, LLP since ...
Cached Biology Technology:Chromos enters into loan and lending arrangements 2AMEX Notifies Signalife That It Has Accepted Signalife's Plan of Compliance 2Nova Biosource Fuels Expands Senior Executive Team 2Nova Biosource Fuels Expands Senior Executive Team 3
Goat polyclonal to Rabenosyn 5 ( Abpromise for all tested applications). Antigen: Synthetic peptide: ELKHTLAKQKGGTD, corresponding to C terminal amino acids 771-784 of Human Rabenosyn 5. Entr...
Goat anti-mouse gamma chain-HRP...
TRIAL SIZE Anti-Kaede [2F4] Monoclonal Research Focus: tag Storage: -20C Shipping Temperature: 4C...
Anti-Human IFN-Gamma Receptor Chain 2 (beta chain) [CD119], Rabbit serum, NON-neutralizing polyclonal antibody...
Biology Products: