Navigation Links
Urged on by urchins: How sea lilies got their get-up-and-go
Date:3/15/2010

ANN ARBOR, Mich.---Nature abounds with examples of evolutionary arms races. Certain marine snails, for example, evolved thick shells and spines to avoid be eaten, but crabs and fish foiled the snails by developing shell-crushing claws and jaws.

Common as such interactions may be, it's often difficult to trace their origins back in evolutionary time.

Now, a study by University of Michigan paleontologist Tomasz Baumiller and colleagues finds that sea urchins have been preying on marine animals known as crinoids for more than 200 million years and suggests that such interactions drove one type of crinoid---the sea lily---to develop the ability to escape by creeping along the ocean floor. The work, which builds on previous research on present-day sea lilies and urchins, is scheduled to be published online this week in the Proceedings of the National Academy of Sciences.

With their long stalks and feathery arms, sea lilies look a lot like their garden-variety namesakes. Perhaps because of that resemblance, scientists long had thought that sea lilies stayed rooted instead of moving around like their stalkless relatives, the feather stars. But in the 1980s, Baumiller and collaborator Charles Messing of Nova Southeastern University's Oceanographic Center in Dania Beach, Fla., observed sea lilies shedding the ends of their stalks to release themselves from their anchor points and using their feathery arms to crawl away, dragging their stalks behind them.

Then, while going through hundreds of hours of video shot during submersible dives, the two researchers came across footage that offered an explanation for why sea lilies might get up and go. The videos showed sea urchins lurking in gardens of sea lilies, some of which appeared to be creeping away from the predators. In some photos, the sea floor around the urchins was littered with sea lily arms, like table scraps left from a feast. Further studies by Baumiller, Messing and
'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
2. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
3. OHSU commercial collaborations have surged
4. Scientists urged to make a stand on climate change
5. Americans want Uncle Sams help putting healthy foods on their dinner table
6. New way to control disease-spreading mosquitoes: Make them hold their urine
7. Baby monkeys receive signals through their mothers breast milk
8. Beewolves protect their offspring with antibiotics
9. Anorexics found to have excess fat-- in their bone marrow
10. Revolutionary water treatment units on their way to Afghanistan
11. More smokers than non-smokers accept HPV vaccination for their daughters
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/18/2014)... , Nov. 17, 2014   ... and EMC collaborate to develop The Partners Data ... , The Partners Data Lake will allow researcher ... improve diagnostics, treatment and the lives of patients ... research and clinical activities across the Partners system, ...
(Date:11/12/2014)... 2014 Crossmatch™, a leading provider of biometric ... fingerprint readers have been deployed throughout Montparnasse Pasteleria, ... Mexico . The bakery chain implemented the Crossmatch ... caused by employees clocking in for each other. ... Montparnasse relied on paper timecards and a mechanical time ...
(Date:11/7/2014)... Nov. 7, 2014  In conjunction with the ... Departments, The Community Foundation of the Verdugos has announced the ... JUSTICE PROJECT," a $250,000 initiative to keep the Verdugo Regional ... its first six months of existence, the Lab has processed ... for local law enforcement. "Because our number one ...
Breaking Biology News(10 mins):Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2
... N.C. In a finding that confirms what many ... younger women who undergo hysterectomies face a nearly two-fold ... published in the December issue of the journal ... track over time the actual hormonal impact of woman ...
... November 14, 2011 The possibility that functional, ... cells, such as embryonic stem cells (ESCs) and induced ... challenges of stem cell research, but is also one ... regenerative medicine. Developmental biology has played a central role ...
... CLEVELAND -- An estimated 300,000 people in North ... a progressive loss of motor control. Patients with generalized ... uncontrolled twisting and turning in awkward, sometimes painful postures. ... the disorder can have a devastating impact on quality ...
Cached Biology News:Hysterectomy increases risk for earlier menopause among younger women 2Self-organized pituitary-like tissue from mouse ES cells 2Self-organized pituitary-like tissue from mouse ES cells 3Self-organized pituitary-like tissue from mouse ES cells 4University Hospitals Case Medical Center unlocks mystery of dystonia with advanced imaging 2University Hospitals Case Medical Center unlocks mystery of dystonia with advanced imaging 3
(Date:11/28/2014)... The report provides qualitative insights on key market ... the market, in order to provide information about the ... market sizes for each sub-segment of the market and ... also includes analysis of the company profiles of the ... performances, product portfolios, and developments of each company. The ...
(Date:11/27/2014)... First articles published now ... Elsevier , a world-leading provider of scientific, technical ... announce the launch of a new journal: ... The launch of Extreme Mechanics Letters is ... of applied sciences such as micro and nanotechnologies, biotechnologies, ...
(Date:11/26/2014)... 26, 2014 The report on the ... segments the concerned market for revenue forecasts and market ... CAGR of 51.9% from 2013 to 2018. At the ... value of $1,415.6 million by 2018. , Browse through ... TOC for information about the market segmentation and in-depth ...
(Date:11/26/2014)... -- The announced sales of three healthcare units within ... expand in non-healthcare areas, says Kalorama Information. Siemens hasn,t ... says that  Siemens is the third largest company in ... IVD market , with 5.5 billion in IVD revenues ... likely affect IVD market shares.  Siemens ...
Breaking Biology Technology:Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 2Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 3Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 4Glycomics Market by Application, Product & End-Users is estimated to reach $928.11 Million by 2019 - New Research Report by MarketsandMarkets 5Elsevier Announces the Launch of a New Journal: Extreme Mechanics Letters 2Elsevier Announces the Launch of a New Journal: Extreme Mechanics Letters 3Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 2Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 3Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 4Kalorama: Sale of Three Siemens Healthcare Units Raises Questions About Firm's IVD Future 2
... SHANGHAI, China Genzyme,Corp. (Nasdaq: GENZ ) ... they,will collaborate to manufacture, develop, and commercialize the,experimental ... Genzyme,s,most advanced gene therapy candidate and is currently ... and Europe. Sunway is a privately-held, Shanghai-based ...
... Inc. (Nasdaq: CEGE ), today announced that Stephen ... E. Tetlow, senior,vice president and chief financial officer of ... company,s third quarter financial results,that will be broadcast live ... p.m. PT/ 5:00 p.m. ET. The webcast will ...
... Kosan Biosciences,Inc. (Nasdaq: KOSN ) today announced ... on Wednesday, October 31, 2007, beginning at approximately,7:30 ... addition to,presentations by Kosan,s Executives, Robert G. Johnson, ... Pieter Timmermans, Ph.D., Senior,Vice President, Drug Discovery and ...
Cached Biology Technology:Genzyme and Sunway to Collaborate on Gene Therapy Program in China 2Genzyme and Sunway to Collaborate on Gene Therapy Program in China 3Genzyme and Sunway to Collaborate on Gene Therapy Program in China 4Cell Genesys to Webcast Third Quarter 2007 Conference Call 2Kosan Biosciences to Host Research & Development Day on October 31, 2007 2Kosan Biosciences to Host Research & Development Day on October 31, 2007 3
...
Luminometers...
... Designed for serial preparation ... fractions including cytosol/particulate/cytoskeleton/nuclear fractions ... these fractions can directly ... assays such as 2-D ...
Mouse IL-31 RA Biotinylated Affinity Purified PAb...
Biology Products: