Navigation Links
Discovery in amber reveals ancient biology of termites
Date:5/14/2009

CORVALLIS, Ore. The analysis of a termite entombed for 100 million years in an ancient piece of amber has revealed the oldest example of "mutualism" ever discovered between an animal and microorganism, and also shows the unusual biology that helped make this one of the most successful, although frequently despised insect groups in the world.

The findings were made by George Poinar, an Oregon State University researcher and international expert on life forms found in amber. It was just published in Parasites and Vectors, a professional journal.

This particular termite was probably flying around while mating in a wet, humid tropical forest in what is now Myanmar during the Early Cretaceous period the age of the dinosaurs. It may have been attacked by a bird or somehow torn open, and then it dropped into the sticky, oozing tree sap that would later become amber, providing an opportunity for the biology of this ancient insect to be revealed in a way that would otherwise have been impossible.

Out of its wounded abdomen spilled a range of protozoa, which even then were providing a key function for the termite they helped it to digest wood. Between animals and microorganisms, this is the earliest example ever discovered of "mutualism," which is one type of symbiotic relationship in which two species help each other.

"Termites live on cellulose, mostly from the dead wood they chew, but they depend on protozoa in their gut to provide the enzymes that can digest the wood," Poinar said. "These protozoa would die outside of the termite, and the termite would starve if it didn't have the protozoa to aid in digestion. In this case they depend on each other for survival."

Even more primitive termites may have fed on a range of things they could digest themselves, Poinar said, but eventually they acquired protozoa that dramatically increased their ability to digest cellulose, and through evolutionary processes they came to depend on it.

Today, modern termites are one of the world's most pervasive and successful insect groups, with about 2,300 known species, mostly in tropical settings, busily at work chewing wood or other plant fiber that protozoa help to digest. They have important ecological roles, helping to create habitat, build soil fertility, recycle nutrients and serve as food for many predators. As a social species similar to ants, some colonies can have 20 million individual insects. And they also cause massive amounts of damage every year to wood structures in much of the world.

Their dependence on these protozoa is now well understood, and the process isn't always pretty.

Somewhere on the evolutionary scale the termites began producing a liquid that contained protozoa that they would excrete. The termite offspring in turn consume the feces and thereby gain the protozoa in their digestive systems.

It took time for all of this to get worked out, the study indicated. The successful establishment of protozoa in the termites required them to withstand the chemical and physical conditions inside the alimentary tract, use the gut contents as a food source, cause no damage to the host and be carried through successive stages and generations.

But by the different species each specializing at what they do best the termite eats, the protozoa digests the two groups have both had extraordinary evolutionary success.

"The relationship between termites and protozoa is very close and has been stabilized now for a very long time because of its obvious value," Poinar said. "It's exciting to understand that this classic example of mutualism has been going on now for at least 100 million years."

As well as outlining this age-old example of mutualism, the new study revealed 10 new fossil flagellate species of protozoa, a new species of termite, a new genus of fossil amoeba and 14 additional trophic and encysted protist stages.

Poinar for many years has studied life forms and other material found trapped in amber. As a semi-precious stone that first begins to form as sap oozing from a tree, amber has the unique ability to trap very small animals or other materials and as a natural embalming agent display them in nearly perfect, three-dimensional form millions of years later. This phenomenon has been invaluable in scientific and ecological research, and allows researchers to characterize the biology of ecosystems that existed millions of years ago.

The amber that contained the termite used in this study came from a mine first excavated in 2001 in the Hukawng Valley in Myanmar, in a formation that was between 97 and 110 million years old.


'/>"/>

Contact: George Poinar
poinarg@science.oregonstate.edu
541-737-5366
Oregon State University
Source:Eurekalert

Related medicine news :

1. Discovery of sugar sensor in intestine could benefit diabetes
2. Discovery suggests location of genes for breast density, a strong risk factor for breast cancer
3. Stem cell research produces a key discovery for Fragile X Syndrome
4. Welch Foundation gives $1.6 million for drug discovery research
5. New discovery leaves blood-doping athletes scratching their heads
6. Chemical Diversity Initiates International Prostrate Cancer Discovery Partnership
7. New discovery leaves blood-doping athletes scratching their heads
8. Discovery of widespread tumor growth gene holds promise for effective anti-cancer treatment
9. Discovery supports theory of Alzheimers disease as form of diabetes
10. Discovery Health CME Explores the Benefits and Risks of Aspirin in Aspirin Therapy: Maximizing the Benefits
11. New discovery may improve treatment of one of the worlds leading causes of blindness
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/28/2017)... Santa Monica, CA (PRWEB) , ... March 28, ... ... expert, Dr. Carson Liu of SkyLex Advanced Surgical, Inc. is thrilled to offer ... newest gastric balloon procedure, and this procedure adds to SkyLex Advanced Surgical’s ...
(Date:3/28/2017)... ... March 28, 2017 , ... The Lice Treatment ... City March 13-16, was a busy spot this year. Liz Solovay and Adrian ... for preventing outbreaks among camp communities during the upcoming 2017 camping season. “Lice ...
(Date:3/28/2017)... ... March 28, 2017 , ... Silicon Valley Hair Institute, the San Francisco Bay ... post about women’s hair loss. Although hair transplant procedures can be seen as more ... or genetics can be two reasons a woman may see her hair thinning. , ...
(Date:3/28/2017)... ... , ... Thank you to all who attended Capio Partners Winter 2017 Healthcare ... exclusive to providers and offered an opportunity to collaborate and network with healthcare colleagues ... Hyatt where attendees gathered for a lively discussion on trends and issues that healthcare ...
(Date:3/28/2017)... ... ... that reveals the mystery of Kevin’s purpose. “A Prophets Bones” is the creation of published ... him that he had neglected to do, but this was from God and there was ... would have felt themselves to be special and better than others due to the fact ...
Breaking Medicine News(10 mins):
(Date:3/27/2017)... 27, 2017 Therapix Biosciences ... company specializing in the development of cannabinoid-based drugs, today ... the United States of ... 40 ordinary shares of the Company, at a ... has granted the underwriters a 45-day over-allotment option ...
(Date:3/27/2017)... Germany , March 27, 2017 ... over 7,000 attendees and more than 600 exhibitors ... and discover opportunities and solutions that will advance ... 6 April 2017 at the Messe Stuttgart, ... the preeminent medical technology platform showcasing the key ...
(Date:3/27/2017)... NEW YORK , March 27, 2017 ... ... that adult use in states where cannabis is legal will generate ... $559 million will be from cannabis specific taxes, such as ... remaining $96 million will be earned from state sales taxes that ...
Breaking Medicine Technology: