Navigation Links
The winners of mass extinction: With predators gone, prey thrives
Date:5/3/2011

erly College Centennial Professor of Geology at West Virginia University. "There had to be some underlying evolutionary and ecological reason for that."

Researchers considered whether a change in the environment, such as water temperature or depth, could explain the crinoid explosion, Kammer said. Changes in predation were also proposed, but hard to test using the fossil record.

"You don't actually find the evidence of a fossil fish with a crinoid in its mouth very often," Kammer said.

The riddle was solved through multi-institutional collaboration and data-sharing. A database of crinoid diversity in the fossil record assembled by Kammer and William Ausich, PhD, study co-author and Professor of Earth Sciences at Ohio State University, was compared to a vertebrate dataset created by Sallan.

When the datasets were placed side by side and analyzed, a clear relationship emerged. As fish populations thrived in the Devonian, crinoid diversity and abundance remained low despite favorable conditions. But after the Hangenberg event devastated fish species, crinoids thrived, diversifying and multiplying. The data suggests the ripple effects of a mass extinction upon ecosystems can last millions of years.

"This study demonstrates a clear example of processes that operate in ecological time predator-prey relationships becoming significant in evolutionary time," Ausich said. "This means that ecological patterns and processes taking place today may have very long-reaching evolutionary effects. And although that idea may not seem particularly surprising at first, respected evolutionary biologists have long argued that it was not possible."

Eventually, the success of crinoids came to an end. As fish species recovered to previous levels, crinoid populations declined in tandem further evidence for typical predator-prey dynamics known as Lotka-Volterra cycles in modern ecology.

Fossils even suggest that the long period
'/>"/>

Contact: Robert Mitchum
robert.mitchum@uchospitals.edu
773-795-5227
University of Chicago Medical Center
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. ASPO announces 2011 award winners in pediatric otolaryngology research
2. Biophysical Society announces 2011 Student Research Achievement award winners
3. Evolutionary winners and losers revealed in collaborative study
4. Winners to share $1 million prize in Office of Naval Research challenge
5. Filmmakers Joel and Ethan Coen among 2011 Dan David Prize winners
6. Joshua E. Neimark Memorial Travel Assistance Award winners investigate stem cell transplantation, sustainable growth, women in academia, and conservation science
7. BTER Foundation announces winners of the William S. Baer Award
8. American Association of Anatomists announces young investigator award winners
9. Biophysical Society announces winners of 2011 Student Travel Awards
10. Biophysical Society announces winners of 2011 CPOW Travel Awards
11. Biophysical Society announces winners of 2011 International Travel Awards
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The winners of mass extinction: With predators gone, prey thrives
(Date:8/29/2014)... the repeated climatic shifts over the last 120,000 ... diversity, a team of researchers led by City ... developed a new biodiversity metric called "phylogeographic endemism." ... genetic variation within species is restricted in geographical ... biology, and 14 other researchers from institutions in ...
(Date:8/29/2014)... as the prolific bloomer Emiliania huxleyi , can ... The finding contradicts the common view that E. ... scarce supplies of thiamine in the ocean to survive. ... the ocean," says CIFAR Senior Fellow Alexandra Worden ... with CIFAR fellows John Archibald (Dalhousie University), ...
(Date:8/28/2014)... mobile app called TX Invasives is now available from ... of Texas at Austin for identifying harmful non-native plant, ... species in the United States cause about $137 billion ... agricultural crops, clog waterways, kill native plants and more. ... app for reporting where invasive species occur, we,re more ...
Breaking Biology News(10 mins):CCNY team defines new biodiversity metric 2Not all phytoplankton in the ocean need to take their vitamins 2Not all phytoplankton in the ocean need to take their vitamins 3Mobile app makes ID of harmful plants, insects in Texas a snap 2
... You may think your lack of resolve to get off ... University researchers have discovered it may be you are missing ... working with healthy, specially-bred mice, some of which had two ... the protein AMP-activated protein kinase (AMPK), an enzyme that is ...
... found a reason why men,s ring fingers are generally ... reverse usually holds true for women. The finding ... and disease, which may be useful for customizing treatments ... Writing this week in the Proceedings of ...
... CA September 4, 2011 Starting with normal skin ... first stem cells from endangered species. Such cells could eventually ... some species, possibly saving them from extinction, or to bolster ... description of the accomplishment appeared in an advance online edition ...
Cached Biology News:McMaster researchers find missing genes may separate coach potato from active cousin 2Male-female ring finger proportions tied to sex hormones in embryo; may offer health insights 2Male-female ring finger proportions tied to sex hormones in embryo; may offer health insights 3Scripps Research scientists produce first stem cells from endangered species 2Scripps Research scientists produce first stem cells from endangered species 3Scripps Research scientists produce first stem cells from endangered species 4
(Date:8/31/2014)... Texas (PRWEB) August 31, 2014 ... Polyacrylamide Industry” is a professional and in-depth ... report provides basic Polyacrylamide information, including Polyacrylamide ... as well as industry overview. This research ... market as well as global industry analysis ...
(Date:8/29/2014)... New York (PRWEB) August 29, 2014 ... valued at $5.6 billion in 2019. It is ... from 2013 to 2019, and was valued at ... report published by Transparency Market Research. , For ... visit: http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research report, ...
(Date:8/29/2014)... California (PRWEB) August 29, 2014 ... of Energy's 2014 Hydrogen Production R&D Award ... -- by splitting water using sunlight. , Shared ... (NREL) and the University of Nevada, Las Vegas ... work developing models of photoelectrochemical solar-hydrogen production and ...
(Date:8/28/2014)... 2014 Best Sanitizers, Inc., a leader ... processing industry, is asking industry professionals to prepare for ... the E2 soap they’re currently using to the Best ... Hand hygiene is critical to fighting cross-contamination and ... Six key criteria are identified to evaluate the effectiveness ...
Breaking Biology Technology:International Polyacrylamide Industry & Copper Iodide Market Data Analysis Now Available at DeepResearchReports.com 2International Polyacrylamide Industry & Copper Iodide Market Data Analysis Now Available at DeepResearchReports.com 3Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Livermore Team Awarded for Hydrogen Production Research 2Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2
... to support regulatory filings for S0812 and additional ... Senomyx, Inc. (Nasdaq: SNMX ), ... to discover and develop novel flavor ingredients for ... today that it has initiated development activities for ...
... 9 /PRNewswire-Asia-FirstCall/ -- Yongye Biotechnology,International, Inc. (OTC Bulletin ... producer and distributor of nutrients for plants and,animals, ... announced that the,Company,s management will present at the ... Dana Point, California. , ...
... Shire plc (LSE: SHP, NASDAQ: SHPGY ), ... Barr Laboratories, Inc.,("Barr) and Mylan, Inc. ("Mylan) dated 2 ... the filing of an Abbreviated New Drug Application,("ANDA") for ... carbonate). , FOSRENOL is protected ...
Cached Biology Technology:SENOMYX ANNOUNCES INITIATION OF DEVELOPMENT ACTIVITIES FOR NEW BITTER BLOCKERS 2SENOMYX ANNOUNCES INITIATION OF DEVELOPMENT ACTIVITIES FOR NEW BITTER BLOCKERS 3SENOMYX ANNOUNCES INITIATION OF DEVELOPMENT ACTIVITIES FOR NEW BITTER BLOCKERS 4Yongye Biotechnology to Present at Roth Conference 2Yongye Biotechnology to Present at Roth Conference 3Shire Receives FOSRENOL Paragraph IV Notice Letters from Barr Laboratories and Mylan 2
Rabbit polyclonal to MDM2 (phospho S185) ( Abpromise for all tested applications). entrezGeneID: 4193 SwissProtID: Q00987...
Anti-ADAM-12 (Meltrin Alpha); carboxy terminal end; rabbit host...
Chaps Cell Extract Buffer can be used to lyse cells under nondenaturing conditions and is recommendedfor the preparation of cell lysates to be used with our caspase signaling pathway antibodies...
Mouse monoclonal [1Q17] to TGE Virus peplomer ( Abpromise for all tested applications)....
Biology Products: