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:12/19/2014)... DUBLIN , Dec. 18, 2014 Research ... announced the addition of the "iPhone 5S ... Technology Report" report to their offering. ... Following the acquisition of AuthenTec in July 2012, ... iPhone 5S. It is currently the only device ...
(Date:12/17/2014)... Dec. 15, 2014 Research and Markets ... of the "Samsung Galaxy S5 - Home ... to their offering. ... different sensing technology than the iPhone 5S, Samsung ... in its product. The Galaxy S5 ...
(Date:12/17/2014)... DUBLIN , Dec. 16, 2014 Research ... announced the addition of the "Global Chemical ... http://photos.prnewswire.com/prnh/20130307/600769 ... is the increasing demand for medical sensors in ... patient data for quick and correct diagnosis during ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
... are working with the U.S. Army and neurosurgeons at ... new type of "bioactive" coating for stents used to treat ... blasts. "Stents coated with a bioactive coating might be ... the inside lining of the blood vessel," said Jean Paul ...
... harmful mercury in plants and animals, a new study by ... has compared levels of the chemical in captive dolphins with ... a controlled diet, while the wild mammals dined on marine ... study found lower levels of mercury in the captive animals, ...
... cues in their hunting sequence - capture, handling and consumption ... and which ones they are better off leaving alone or ... their prey, then they assess its size, and finally they ... team from the Smithsonian Tropical Research Institute in Panama is ...
Cached Biology News:Purdue professor to speak before Congress about nanotechnology in brain treatment research 2Purdue professor to speak before Congress about nanotechnology in brain treatment research 3Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals 2Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals 3What sounds good doesn't always taste good 2
(Date:12/24/2014)... According to Ross Selinger, President of Selinger ... the national office market continues to be strong, driven by ... by the third quarter’s surprising 3.9% GDP, unemployment decreasing to ... have held inflation down and the Fed is keeping interest ... remaining soft. , This solid economic news is having a ...
(Date:12/24/2014)... China Biologic Products, Inc. (NASDAQ: CBPO, ... integrated plasma-based biopharmaceutical company in China ... Shandong Taibang Biological Products Co. Ltd., has received ... Food and Drug Administration (the "CFDA") for its ... in the Company,s public filings, the CFDA inspected ...
(Date:12/24/2014)... NEW YORK , Dec. 23, 2014 /PRNewswire/ ... study of mazindol in children with attention deficit/hyperactivity disorder ... December 2014 . The paper, titled ... attention deficit/hyperactivity disorder" ( Konofal et al, ... eCollection 2014 ) shows that mazindol might be ...
(Date:12/22/2014)... 22, 2014 GenomeDx Biosciences today announced that ... Classifier, a genomic test for prostate cancer, was able ... managed by radical prostatectomy without adjuvant therapy. Although rapid ... uncommon, using tumor genomics to identify these men who ... an important advance. The study has been published ...
Breaking Biology Technology:ITRA Global Reports Long Island Is Out of Sync With The National Office Market 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 3China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3Redefining ADHD: A New Approach & A Shift of Paradigm in ADHD Therapeutics 2Redefining ADHD: A New Approach & A Shift of Paradigm in ADHD Therapeutics 3Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 2Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 3
... , , , There is obviously no single , ... amplifications. For example, , depending on the length and sequence ... can differ from each other. Finding the optimal or the , ... and efficient amplification of a specific target. , ...
... Using Eppendorf Mastercycler gradient , , , , ... NPC Laboratory, Institute of Postgraduate Studies and Research, University , of Malaya, Kuala Lumpur, Malaysia , , ... , , ... , , ...
... Plant RNA, Using the Eppendorf Perfect ... , , , Sonja Vorwerk and ... Zchtungsforschung, Carl-von-Linn , Weg 10, 50829 Cologne, Germany , ... , Barbro Patterson, Eppendorf AG, Germany , ...
Cached Biology Technology:PCR Optimization 2PCR Optimization 3Amplification of Epstein-Barr Virus Exon C with Difficult Primers , Using Eppendorf Mastercycler gradient 2Amplification of Epstein-Barr Virus Exon C with Difficult Primers , Using Eppendorf Mastercycler gradient 3Amplification of Epstein-Barr Virus Exon C with Difficult Primers , Using Eppendorf Mastercycler gradient 4Amplification of Epstein-Barr Virus Exon C with Difficult Primers , Using Eppendorf Mastercycler gradient 5Simple and Rapid Isolation of Plant RNA, Using the Eppendorf Perfect RNA, Eukaryotic, Maxi Kit 2Simple and Rapid Isolation of Plant RNA, Using the Eppendorf Perfect RNA, Eukaryotic, Maxi Kit 3Simple and Rapid Isolation of Plant RNA, Using the Eppendorf Perfect RNA, Eukaryotic, Maxi Kit 4Simple and Rapid Isolation of Plant RNA, Using the Eppendorf Perfect RNA, Eukaryotic, Maxi Kit 5Simple and Rapid Isolation of Plant RNA, Using the Eppendorf Perfect RNA, Eukaryotic, Maxi Kit 6