Navigation Links
Voracious comb jellyfish 'invisible' to prey
Date:10/12/2010

Despite its primitive structure, the North American comb jellyfish can sneak up on its prey like a high-tech stealth submarine, making it a successful predator. Researchers, including one from the University of Gothenburg, have now been able to show how the jellyfish makes itself hydrodynamically 'invisible'.

The North American comb jellyfish Mnemiopsis leidyi has long been known to consume vast quantities of zooplankton. A few years ago the species became established in Northern Europe.

Like many other jellyfish, Mnemiopsis leidyi has a large gelatinous body. The large size increases its chances of encountering prey, but can also be a disadvantage since the prey organisms are often highly sensitive to movements in the water. Nevertheless, the comb jellyfish manages to catch large amounts of copepod plankton, which are known for their acute escape response.

Able to catch the world's most vigilant plankton

'Copepods have a well developed ability to detect even the slightest water disturbance,' says Lars Johan Hansson, a researcher at the Department of Marine Ecology at the University of Gothenburg. 'They can swim well clear of the source of water deformation in just a split second. How the comb jellyfish is able to approach and catch some of the animal world's most vigilant plankton has up until now been unknown.'

The researchers used advanced video technology to study water flows around and within the comb jellyfish. These measurements were then used to calculate the water deformation generated by the jellyfish and compare this with the levels that trigger an escape response in copepods.

'It emerged that the comb jellyfish uses microscopic, hairlike cilia inside its oral lobes to generate a feeding current that carefully transports water between the lobes. As the water accelerates slowly and is transported undisturbed into the jellyfish together with the prey, there is nothing that alarms the
'/>"/>

Contact: Lars Johan Hansson
lars.hansson@marecol.gu.se
46-317-862-624
University of Gothenburg
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Voracious sponges save reef
2. Lethal backfire: Green odor with fatal consequences for voracious caterpillars
3. New online report on massive jellyfish swarms released
4. Fireflies and jellyfish help illuminate quest for cause of infertility
5. Jellyfish joyride a threat to the oceans
6. Scientists unravel evolution of highly toxic box jellyfish
7. The jellyfish-like salp: Most efficient filter-feeder in the deep, scientists discover
8. Research shows that invisible hand guides evolution of cooperative turn-taking
9. Seeing previously invisible molecules for the first time
10. UW-built device reveals invisible world teeming with microscopic algae
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Voracious comb jellyfish 'invisible' to prey
(Date:6/25/2015)... , June 25, 2015  TAKE Solutions Ltd., ... patent by the United States Patent and Trademark Office ... This process leverages TAKE Solutions, Clinical Accelerators to reduce ... 50% (when compared to standardization without the accelerators), thus ... At the heart of the ...
(Date:6/24/2015)... Biometry authentication provider KeyLemon today announced ... one face in. Logo - ... in, entering the expanding biometric authentication market in ... answer to the password problem. With advanced face ... KeyLemon, one face in allows users to securely ...
(Date:6/18/2015)... , June 18, 2015 This report ... Million by the following Product Segments, which includes Immunoassay ... Chemiluminescence Immunoassay Systems, Radio Immunoassay Systems, and Nephelometric Immunoassay ... US, Canada , Japan ... Asia-Pacific , Latin America , ...
Breaking Biology News(10 mins):TAKE Solutions Awarded Patent By USPTO 2KeyLemon Announces Partnership With Biometric Password Solution onefacein 2Global Immunoassay Systems Market 2Global Immunoassay Systems Market 3Global Immunoassay Systems Market 4Global Immunoassay Systems Market 5Global Immunoassay Systems Market 6Global Immunoassay Systems Market 7Global Immunoassay Systems Market 8Global Immunoassay Systems Market 9Global Immunoassay Systems Market 10Global Immunoassay Systems Market 11Global Immunoassay Systems Market 12Global Immunoassay Systems Market 13Global Immunoassay Systems Market 14Global Immunoassay Systems Market 15Global Immunoassay Systems Market 16Global Immunoassay Systems Market 17Global Immunoassay Systems Market 18Global Immunoassay Systems Market 19Global Immunoassay Systems Market 20Global Immunoassay Systems Market 21Global Immunoassay Systems Market 22Global Immunoassay Systems Market 23Global Immunoassay Systems Market 24Global Immunoassay Systems Market 25Global Immunoassay Systems Market 26Global Immunoassay Systems Market 27Global Immunoassay Systems Market 28Global Immunoassay Systems Market 29
... Madison, WI, February 24, 2009 | Tiny sediment grains ... minerals in an open fabric that results in a ... grains. Scientists at the U.S. Geological Survey (USGS) are ... composition of these coatings on sediment grains in the ...
... with the tiny fruit fly and then moving into mice and ... of the same gene suppresses cancer in all three organisms. Reciprocally, ... in mammals leads to cancer. The authors show there is ... with a drug. They report their findings in two papers in ...
... today (Monday) to advise the country on how it ... The biotechonology experts from the Belfast-based University are ... cost the world economy around $200 billion in lost ... year. A delegation led by Dr Gerry Brennan ...
Cached Biology News:Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil 2Suppressing cancer with a master control gene 2Reduction in parasite infections ahead for India 2
(Date:6/29/2015)... 2015   For the seventh year running, Across Health ... overall digital maturity called the Multichannel Maturometer . ... not maturing fast enough. While it,s true that technology ... overall and customers are increasingly "digital natives", pharma still ... engagement.  ...
(Date:6/26/2015)... , June 26, 2015 /PRNewswire/ - iCo Therapeutics ("iCo" ... announced that all nominees listed in the management ... at its 2015 Annual Meeting of Shareholders, held ... by ballot, the following 5 nominees proposed by ... to serve until the Company,s next Annual Meeting ...
(Date:6/26/2015)... (PRWEB) , ... June 26, 2015 , ... ... today announced that its SimplePrep™ technologies have been integrated into a sample prep ... Space Station (ISS) as a part of the NASA’s WetLab-2 Project. , On ...
(Date:6/26/2015)... ... ... ReliantHeart, Inc. , an innovative supplier of advanced mechanical circulatory assist technologies ... (HA5) to the 68th consecutive implant, there has been no evidence of de novo ... referred to as de novo thrombus. De novo thrombus can hide under the impeller ...
Breaking Biology Technology:Results from Digital Maturity Study Show Pharma Lagging 2Results from Digital Maturity Study Show Pharma Lagging 3Results from Digital Maturity Study Show Pharma Lagging 4iCo Therapeutics Announces Voting & Election Results from Annual Meeting of Shareholders 2iCo Therapeutics Announces Voting & Election Results from Annual Meeting of Shareholders 3Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 3HeartAssist5® Remote Monitoring has alerted no patterns of de novo thrombus in 68 consecutive implants 2HeartAssist5® Remote Monitoring has alerted no patterns of de novo thrombus in 68 consecutive implants 3
... Calif., July 27, 2011 Sangamo BioSciences, Inc. (Nasdaq: ... and accomplishments. For the second quarter ended ... $10.3 million, or $0.20 per share, compared to a net ... same period in 2010. As of June 30, 2011, the ...
... Corporation , a leading global provider of microwave laboratory ... microwave peptide synthesis products . In FY2011 year-to-date, the ... in its automated peptide synthesizer instrument sales and is ... systems. Additionally, CEM,s products were well received at the ...
... 2011 Linden LLC, a Chicago-based healthcare private ... an investment in Strata Pathology Services, Inc., a ... Headquartered in Lexington, Massachusetts, Strata offers ... oral pathology, gastroenterology and gynecology segments. Since 1984, ...
Cached Biology Technology:Sangamo BioSciences Reports Second Quarter 2011 Financial Results 2Sangamo BioSciences Reports Second Quarter 2011 Financial Results 3Sangamo BioSciences Reports Second Quarter 2011 Financial Results 4Sangamo BioSciences Reports Second Quarter 2011 Financial Results 5Sangamo BioSciences Reports Second Quarter 2011 Financial Results 6Sangamo BioSciences Reports Second Quarter 2011 Financial Results 7Record Year for CEM's Peptide Synthesis Business 2Record Year for CEM's Peptide Synthesis Business 3Linden Enters Anatomic Pathology Sector Through Investment in Strata Pathology Services, Inc. 2