HOME >> BIOLOGY >> NEWS
Encrustation provides clues about ancient seas

Blacksburg, Va. -- David L. Rodland, a Ph.D. student in Virginia Tech's Department of Geological Sciences, has been studying encrustation, or the colonization of seashells by other marine organisms that live permanently attached to hard surfaces.

Examples of encrusting organisms (or epibionts) include serpulid and spirorbid worms, bryozoans, barnacles, and algae. Many epibionts produce their own calcareous tubes, shells, or skeletons, which are attached to that surface and may become fossilized along with it. "The encrustation of seashells by epibionts provides a great deal of ecological data or, for fossils, paleoecological, data," Rodland said. "You can count the number and diversity of epibionts on a shell, for example, and see how it changes as a function of shell size. Or you can examine how encrustation varies between different kinds of shells or between the shells collected at different places and under different environmental conditions. Some workers have even suggested that they could be used to estimate the amount of nutrients and plankton available in ancient seas."

At the meeting of the Southeastern Sections of the Geological Society of America (GSA) in Memphis March 12-14, Rodland presented a comparison of the encrustation of a bivalve mollusk (Macoma) with the encrustation of an articulate brachiopod (Bouchardia) from the coast of Brazil. "This is the only tropical / subtropical site where both bivalves and brachiopods occur in abundance in the present day, or at least, the only one we know," Rodland said. "Brachiopods were a common element in Paleozoic fossil beds (>250 million years ago) and so this is the first opportunity we really have to compare brachiopods and bivalves in the modern world."

"As it turns out," he said, "epibionts appear to preferentially colonize the brachiopod Bouchardia, and occur less frequently on the bivalve Macoma. There are a large number of different measures one can use to evaluate the degree
'"/>

Contact: David Rodland
drodland@vt.edu
540-231-8828
Virginia Tech
24-Mar-2003


Page: 1 2

Related biology news :

1. Study by Israeli scientists provides insight on DNA code
2. Study by Tufts biologist provides window into progression of some degenerative diseases
3. Rolling Store provides model for overcoming barriers to healthy foods and better health outcomes
4. Common worm provides insights into salmonella virulence
5. Avastin-Tarceva combo provides one-two punch against lung cancer
6. Motion that powers sperm provides key to unravelling rare genetic disorder
7. Chemical reaction in birds provides sense of direction during migratory flights
8. Engineered virus provides impetus in search for HIV vaccine
9. Pollution history documented through shell remains provides tool to study ecosystem change
10. Microbes trick provides a template for willowy crystals
11. Migraine mouse provides insight into neurobiology of devastating headaches

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/30/2020)... ... April 28, 2020 , ... Ever a ... effort in providing timely and critical information to life science organizations as they ... health safety concerns. , “Providing the most up-to-date actionable guidance and information has ...
(Date:4/23/2020)... ... April 23, 2020 , ... ... recruitment plans. MDG provides critical infrastructure products for the animal feed, human consumption, ... plans for expansion. Further, as supply channels from overseas competitors have become weakened ...
(Date:4/18/2020)... ... April 16, 2020 , ... SIRION Biotech GmbH , a world ... it will present a company update on its work expediting gene therapy research and ... on April 22 and 23. Dieter Lingelbach, the Company’s Chief Operating Officer, will also ...
Breaking Biology News(10 mins):
(Date:5/26/2020)... ... May 26, 2020 , ... Brilliant , the leading ... of smart garage door openers, announce a new integration to bring more convenience, simplicity, ... door openers powered by Aladdin Connect® can now be controlled from Brilliant’s in-wall touchscreen ...
(Date:5/21/2020)... ... May 20, 2020 , ... ... Prakash, who will serve as the company’s executive vice president of product engineering ... Exo is disrupting the medical imaging space, bringing more than 24 years of ...
(Date:5/15/2020)... Mass. (PRWEB) , ... May 15, 2020 , ... Sentien ... the appointment of Richard Ganz as Executive Chairman. Mr. Ganz will continue to ... years, as well as work closely with CEO Brian Miller and Sentien’s management team. ...
(Date:5/14/2020)... ... May 13, 2020 , ... Early stages of drug ... or no information on the drug’s mechanism of action (MOA). Gene expression profiling ... measuring the activity of molecular pathways. This information can complement phenotypic readouts and ...
Breaking Biology Technology:
Cached News: