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:7/11/2014)... is evidence that under the normal circumstances, ... development, maintain neuronal environment, and exhibit therapeutic ... neurodegenerative disease. Previous studies have found that ... after chemical induction have reduced viability, which ... Prof. Xiaodong Yuan, Kailuan General Hospital, Hebei ...
(Date:7/11/2014)... Using spider toxins to study the proteins that let ... say they have stumbled upon a biological tactic that ... insect plagues in a safe and environmentally responsible way. ... be lethal for one species and harmless for a ... target specific pests without harming beneficial species like bees. ...
(Date:7/10/2014)... COLORADO SPRINGS, Colo. , June 27, 2014 ... announces that the National Institute of Standards and ... appointed 10 of its academic research and forensic ... Board (FSSB).  The Board is an element of ... These AAFS members are among the first appointments ...
Breaking Biology News(10 mins):Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 3
... state of chronic inflammation. If chronic, the inflammation will ... devastating disease multiple sclerosis, hyperactivity of immune cells called ... Researchers at BRIC, the University of Copenhagen, have identified ... combat such hyperactive T-cells in blood from patients with ...
... Lincoln, Neb., Feb. 17, 2014 -- Fertilizer could be too much ... findings to be published online Feb. 16 by the journal ... nitrogen will increase the amount of grass that can be grown. ... are better adapted to survive in harsher times. It results in ...
... why skeletal muscle stem cells stop dividing and renewing ... opportunity for managing muscle-wasting conditions in humans, says a ... to CU-Boulder Professor Bradley Olwin, the loss of skeletal ... to sarcopenia, a debilitating muscle-wasting condition that generally hits ...
Cached Biology News:New blood cells fight brain inflammation 2Worldwide study finds that fertilizer destabilizes grasslands 2CU-Boulder stem cell research may point to new ways of mitigating muscle loss 2CU-Boulder stem cell research may point to new ways of mitigating muscle loss 3
(Date:7/11/2014)... DUBLIN , July 11, 2014 ... in part) in, into or from any jurisdiction where to ... of such jurisdiction.  Shire plc ("Shire" or the ... Bloomberg article this afternoon.  Shire confirms it has held a ... being made by Shire without the prior agreement or approval ...
(Date:7/11/2014)...  Researchers have pioneered a revolutionary new way ... called Virtual Finger, allows scientists to move through ... synapses using the flat surface of their computer ... studies orders of magnitude more efficient, saving time, ... many areas of experimental biology. The software and ...
(Date:7/10/2014)... July 10, 2014 Understanding the need ... cell lines, and the gap that currently exists in ... expand its industry-leading portfolio of validated ion channel and ... channel-expressing cell lines, as ion channels control many critical ... this activity creates the potential to treat a variety ...
(Date:7/10/2014)... July 10, 2014 EvoDerma ’s NOOME ... This rejuvenating device now comes with a second treatment cup ... time. , The new cup is thinner on the edges ... to target rough, thin and uneven surfaces on the face, ... for a stimulating treatment on areas such as the cheeks ...
Breaking Biology Technology:Shire plc - Statement re: Media Speculation 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 2Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 3Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2
... With all the domestic and global issues going on ... the world's leaders viewed issues in yesterday's critical moments. ... had to shoulder huge responsibilities. They are worth applying ... perspectives may help broaden your view of things. That's ...
... startup and spin-off companies are gaining attention from ... of this is Primorigen Biosciences LLC , ... analysis of cellular reprogramming and differentiation. , ,Primorigen, ... related products, will use a pair of investments ...
... Wis. - Norlight Telecommunications, Inc., which ... announced that it will roll out its new Voice ... businesses in Green Bay and Madison. , ,The ... growth market by offering integrated communications bundles of local ...
Cached Biology Technology:Business leaders can learn from historical insights 2Business leaders can learn from historical insights 3Business leaders can learn from historical insights 4Business leaders can learn from historical insights 5Wisconsin start up Primorigen Biosciences corrals out-of-state investment 2Norlight will offer VoIP in Madison, Green Bay 2
... protein assay reagents package is used for determining ... and detergents. The RC DC protein assay is ... for 500 standard assays: 250 ml RC reagent ... alkaline copper tartrate solution, 2 L dilute Folin ...
... SureLINK Bioconjugation Kit provides a powerful ... carbohydrates and nuceleic acids. The kit provides ... with reagents for quantifying conjugation efficiencies. It ... fluorophores, biotin and other tags with a ...
...
MAb to HLA, Class II-DR+DP Dry Ice: No Preservative: NaN3 Availability When Not in Inventory: 14-21 Business Days...
Biology Products: