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

of dominance had left the crinoids especially vulnerable to a new predator strategy. In the Devonian era, crinoids evolved hard armored shells to defend against fish with sharp "shearing" teeth. But when fish populations returned in force 15 million years after the Hangenberg event, those species used "crushing" teeth well suited for thwarting crinoid defenses.

The persistence of a once-beneficial trait that becomes obsolete should be called a "legacy adaptation," the authors propose. In the absence of a predator-prey arms race, a species' inherited defenses may become outdated, Sallan said.

"There's a complete absence of predation pressure and the crinoids take off, but they retain their defenses as if they can't get out of them," Sallan said. "When a new form of predator appears, they can go directly for the best solution to cracking a crinoid, which is crushing. The Devonian-era armor of crinoids isn't suited for defending against that attack, but they can't lose it without losing all of their residual defenses."


'/>"/>

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 $1 million prize in Office of Naval Research challenge
5. Filmmakers Joel and Ethan Coen among 2011 Dan David Prize winners
6. Joshua E. Neimark Memorial Travel Assistance Award winners investigate stem cell transplantation, sustainable growth, women in academia, and conservation science
7. BTER Foundation announces winners of the William S. Baer Award
8. American Association of Anatomists announces young investigator award winners
9. Biophysical Society announces winners of 2011 Student Travel Awards
10. Biophysical Society announces winners of 2011 CPOW Travel Awards
11. Biophysical Society announces winners of 2011 International Travel Awards
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The winners of mass extinction: With predators gone, prey thrives
(Date:3/24/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) has ... Global Strategic Business Report" report to their offering. ... in US$ Thousands by the following Segments: Face Biometrics, and Voice ... Canada , Japan , ... East & Africa , and ...
(Date:3/24/2015)... Fla. , March 24, 2015   ... management solutions, today announced that its U.are.U ® ... accessory retailer Goorin Bros . to achieve ... biometrics-based solution secures access to the POS terminal, ... increased risk of data breaches. ...
(Date:3/23/2015)... , March 23, 2015   HOYOS Labs ... management company, today announced that the Company will demonstrate ... both enterprise and consumers at Connect:ID on March 23 ... HOYOS Labs will highlight the IEEE Biometric Open ... ; and enterprise access control system. BOPS was ...
Breaking Biology News(10 mins):Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... Bartness, Regents, Professor of Biology at Georgia State University, ... Institutes of Health to further research into the biological ... Research in Time (MERIT) award from the National Institute ... his lab,s investigation into the communication loop between fat ...
... new study suggests that it might be a genetic ... three thousand men - all pairs of male twins ... first time they had sex. Many participants in the ... and premature ejaculation at their first sexual encounter. These ...
... called a "Dream Team." Lombardi Comprehensive Cancer ... DSc, and 12 of the nation,s top breast cancer ... Stand Up To Cancer (SU2C) to form a scientific ... and brightest scientists will conduct new breast cancer research ...
Cached Biology News:Researcher garners major award from NIH for further exploration into the mechanisms of obesity 2Lombardi scientist brings 'dream team' breast cancer research effort to GUMC 2Lombardi scientist brings 'dream team' breast cancer research effort to GUMC 3
(Date:3/30/2015)... March 30, 2015 With recent advancements ... you the government, major companies are getting into the ... setting future mandates for renewable energy production, many homeowners ... , Solara Power is a new solar distribution company ... available that allow qualifying homeowners to enjoy the benefits ...
(Date:3/30/2015)... , March 30, 2015  New Jersey Health ... projects in the state of New Jersey ... round of grant funding, announced James M. Golubieski ... Health Foundation Research Grants program, an additional $500,000 will ... to fund early stage research projects that demonstrate exciting ...
(Date:3/30/2015)...  Spherix Incorporated (Nasdaq: SPEX ) -- an intellectual ... monetization of intellectual property, today provided an update ... Spherix v. Uniden , Case No. 3:13-cv-03496-M, both ... Northern District of Texas ... Case No. 1:14-cv-00721-GBL-TCB, in the United States ...
(Date:3/30/2015)... and MADISON, Wis. , March ... Nakajima ,) (TSE: 4901) ("Fujifilm") and Cellular Dynamics International, ... ICEL ) ("CDI"), a leading developer and manufacturer of ... specifications, today announced that the two companies have entered ... via an all-cash tender offer to be followed by ...
Breaking Biology Technology:Solara Power Announces Residential Solar Power with No Up-Front Fees 2New Jersey Health Foundation Announces An Additional $1 Million To Fund Innovation and Research Grants in New Jersey 2Spherix Provides Update on Litigation vs. VTech, Uniden and Verizon 2Spherix Provides Update on Litigation vs. VTech, Uniden and Verizon 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 2Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 3Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 4Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 5Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 6Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 7Fujifilm Holdings to Acquire Cellular Dynamics International, Inc. 8
... Va., May 7 Champions,Biotechnology, Inc. (OTC ... the,development of advanced preclinical platforms and tumor ... drugs, today announced that it has,established an ... evaluation of certain therapeutic antibodies in ImClone,s,clinical ...
... Cohera Medical, Inc., a rapidly,growing medical device company ... adhesives, announced today that it has closed an,insider ... proceeds of this,transaction will support the growth of ... product, TissuGlu(R), a strong, resorbable surgical,adhesive, as well ...
... NOVATO, Calif., May 7 BioMarin Pharmaceutical,Inc. (Nasdaq and ... of BioMarin, will present a company update at the,Bank ... May 14,2008 at 1:20 p.m. PT., Interested parties ... the investor section of the BioMarin website, http://www.BMRN.com ...
Cached Biology Technology:Champions Biotechnology and ImClone Systems Establish Agreement for Preclinical Evaluation of Oncology Drugs 2Champions Biotechnology and ImClone Systems Establish Agreement for Preclinical Evaluation of Oncology Drugs 3Cohera Medical, Inc. Announces Closing of Insider Round of Financing for Over $7.6 Million 2BioMarin to Present at the Bank of America Healthcare Conference 2
ANTI DEOXY CORTICO...
... Automatic High Sensitivity Laboratory Osmometer for both 0.2 and 2.0 mL samples for ... and record keeping. Bar code reading capability with optional scanner. RS-232 port. ... ... ...
Secure-Seal™ hybridization chamber gasket, eight chambers, 9 mm diameter, 0.8 mm deep *set of 20*...
sodium channel, nonvoltage-gated 1 alpha,...
Biology Products: