Navigation Links
The pain of evolution: A big toothache for reptiles
Date:4/18/2011

Our susceptibility to oral infection has some parallels to those of ancient reptiles that evolved to eat a diet incorporating plants in addition to meat. That's according to Robert Reisz from the University of Toronto and his colleagues who found evidence of bone damage due to oral infec-tion in Paleozoic reptiles as they adapted to living on land. Their findings, published online in Springer's journal Naturwissenschaften The Nature of Science, predate the previous record for oral and dental disease in a terrestrial vertebrate by nearly 200 million years.

The researchers investigated the jaws of several well-preserved specimens of Labidosaurus hama-tus, a 275-million-year-old terrestrial reptile from North America. One specimen stood out because of missing teeth and associated erosion of the jaw bone. With the aid of CT-scanning, Reisz and colleagues found evidence of a massive infection. This resulted in the loss of several teeth, as well as bone destruction in the jaw in the form of an abscess and internal loss of bone tissue.

As the ancestors of advanced reptiles diversified to life on land, many evolved dental and cranial specializations to feed more efficiently on other animals and to incorporate high-fiber plant leaves and stems into their diet. The primitive dental pattern in which teeth were loosely attached to the jaws and continuously replaced, changed in some lineages to be strongly attached to the jaw, with little or no tooth replacement. This was clearly advantageous to some early reptiles, allowing them to chew their food and thus improve nutrient absorption. The abundance and global distribution of Labidosauris and its kin attest to the evolutionary success of this strategy.

However, Reisz and his colleagues suggest that as this reptile lost the ability to replace teeth, the likelihood of infections of the jaw, resulting from damage to the teeth, increased substantially. This is because prolong
'/>"/>

Contact: Renate Bayaz
renate.bayaz@springer.com
49-622-148-78130
Springer
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evolution: A Developmental Approach
2. Inventions of evolution: What gives frogs a face
3. UH: Insular evolution: Large and big-footed voles in an outer archipelago
4. Evolution: Crabs go deep to avoid hot water
5. Forced evolution: Can we mutate viruses to death?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/16/2014)... Post-menopausal women experienced improvements in vaginal atrophy, with ... bleeding, after 12 weeks of daily 10 milligram ... nutritional supplement previously shown to help relieve certain ... study reported in a poster at the North ... , "These data documented improved vaginal epithelium, without ...
(Date:10/15/2014)... Gutenberg University Mainz (JGU) as a full member, ... maintain a significant nationwide standing in the field ... Johannes Gutenberg University Mainz as a full member ... national and international competition for the best minds ... be proud that Mainz University has been recognized ...
(Date:10/15/2014)... 15, 2014   Neurotechnology , a provider ... availability of the VeriLook Surveillance 3.0 software ... real-time biometric face identification using live video streams ... The new version not only identifies faces in ... objects while they are moving through the video ...
Breaking Biology News(10 mins):S-equol supplements associated with improved measures of reproductive health in postmenopausal women 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3
... are improving the taste, appearance and nutritional content of ... grow to $6 billion by 2017, according to a ... (IFT) Annual Meeting & Food Expo in Chicago. ... an immune disorder triggered by the ingestion of gluten ...
... tissue sustains irreparable damage in the wake of a ... and the cardiac muscle contains few stem cells, the ... fibrotic and cannot contract properly. In their search ... been exploring cardiac "patches" that could be transplanted into ...
... to cancer and other diseases, genetic testing, infectious proteins ... topics internationally renowned speakers will tackle at The EMBO ... from 21-24 September 2013. Sir Michael Stratton, Director ... Executive Officer of deCODE Genetics, and Thijn Brummelkamp, Group ...
Cached Biology News:New technologies and ingredients provide better options for gluten-free eating 2A heart of gold 2Anne Glover and Sir Michael Stratton to meet the press at The EMBO Meeting 2013 in Amsterdam 2
(Date:10/20/2014)... NEW YORK , Oct. 20, 2014 /PRNewswire/ ... of their experimental ZMapp™ antibody therapeutic to fight ... of how difficult and time-consuming the production of ... healthcare market research publisher said that while some ... cycle of this compound, those with industry knowledge ...
(Date:10/20/2014)... -- , A major pan-European survey into ... of care has revealed changing trends in many important ... provision of healthcare services across the continent. The results ... Gastroenterology (UEG), have been announced today and led to ... burden of GI disorders across Europe ...
(Date:10/20/2014)... (PRWEB) October 20, 2014 ... Partners LLC, announced today that Ellen Teplitzky, an ... support for the pharmaceutical industry, has joined the ... of its legal services practice. NDA Partners ... expert witness and testimony, to top law firms ...
(Date:10/19/2014)... CAMBRIDGE, Mass. , Oct. 19, 2014 NextCODE ... of the whole genome in real time, today announced the ... the NextCODE Exchange , at the American Society of ... . To learn more, sign up and apply for ... on its unique features and benefits can be viewed ...
Breaking Biology Technology:Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 2Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 3Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 4Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 5NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3
... petroleum-based energy production. However, current solar-cell technology often does ... expensive to mass-produce. In addition, information on the total ... incomplete, experts say. To better understand the energy ... research team from Rochester Institute of Technology has conducted ...
... Belgium and BOSTON, September 17, 2010 ... ... ... are keyed by longUrl, so we need to grab the first one. for (var r in data.results) ...
... A new technology for removing water from ultrafine coal ... at an operating coal cleaning plant. The technology offers ... from the source. A peer-reviewed paper on this new ... Coal Preparation Society Conference, Cairns, Queensland. Cleaning coal ...
Cached Biology Technology:Research team assesses environmental impact of organic solar cells 2Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 2Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 3Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 4Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 5Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 6Materialise and Dr. J.B. Jupiter Explore the Power of Virtual Surgical Planning in Correcting Compound Wrist Fractures 7Commercial-scale test of new technology to recover coal from sludge successful 2Commercial-scale test of new technology to recover coal from sludge successful 3
Mouse Cell Line Slides...
Human Cell Line Slides...
... Each Signet Level 2 Detection ... the avidin-biotin chemical bonding principle and ... to provide sensitivity, specificity and reliablility. ... immunostaining in both manual and automated ...
6X Loading Buffer is intended for gel electrophoresis of DNA fragments or PCR products....
Biology Products: