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:8/10/2015)... and TELTOW, Germany , August 10, ... (SMI), a world leader in Eye Tracking Technology for ... its OEM Eye Tracking Platform for integration into all ... contains reference designs for seamless integration of eye tracking ... reality HMDs and augmented reality smart glasses. Omnivision,s leading ...
(Date:8/6/2015)... TELTOW, Germany , August 6, 2015 ... SensoMotoric Instruments (SMI) shows the world,s first ... based on Epson,s Moverio BT-200 see-through head mounted ... this new solution, unprecedented quality and efficiency is brought ... context-sensitive displays. For the first time, professionals and researchers ...
(Date:8/5/2015)... , August 5, 2015 ... titled "Facial Recognition Market - Global Industry Analysis, Size, ... global market for facial recognition is forecast to reach ... by increased demand for surveillance systems by civil and ... number of crimes and terrorist activities across the globe ...
Breaking Biology News(10 mins):SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 2Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 3Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 4Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 5Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 6
... University of California, Berkeley, scholar and Italian experts are at ... paintings or the art of ancient glassblowers. Instead, the team ... of fungi in Italy to create an unprecedented DNA database. ... - many of which are quite rare - are housed ...
... protein "transit system" may lie at the heart of ... , In the Sept. 17 online issue of Nature ... of a mutation that causes severe skeletal deformities in ... , The findings are surprising, said Ela Knapik, ...
... researchers at the University of Alberta in Edmonton, Canada have ... an ancient mammal that still defies classification. , The findings, ... and only comprehensive account of the creature, named Horolodectes sunae, ... Horolodectes lived about 60 million years ago, soon after the ...
Cached Biology News:Researchers barcode DNA of Venice museum's vast fungi collection 2Researchers barcode DNA of Venice museum's vast fungi collection 3Researchers barcode DNA of Venice museum's vast fungi collection 4Cellular traffic backups implicated in skeletal malformations 2Cellular traffic backups implicated in skeletal malformations 3Researchers give name to ancient mystery creature 2
(Date:8/27/2015)... , Aug. 27, 2015 HUYA Bioscience International ... of the Japan Society of HTLV-1, held this week ... The purpose of the Society is to promote research ... development of medical technology and research related to these ... "HUYA is proud to support this prestigious ...
(Date:8/27/2015)... RESEARCH TRIANGLE PARK, N.C. , Aug. 27, ... reports on the decision by FedEx, UPS and ... shipments of certain biological specimens classified as ,select ... expertise and long history of handling these sensitive ... network, knowledge of global transportation regulations, trained and ...
(Date:8/26/2015)...  Roka Bioscience, Inc. (NASDAQ: ROKA ), a ... for the detection of foodborne pathogens, today announced that ... & Company Emerging Growth Conference on September 2 at ... New York Marriott Marquis. A live ... investor relations section of Roka Bioscience,s website at ...
(Date:8/26/2015)... Md. , Aug. 26, 2015 Intrexon ... biology, announced today the closing of its previously announced ... full by the underwriters of their option to purchase ... public offering price of $41.00 per share.  The exercise ... shares of common stock sold by Intrexon to 5,609,756 ...
Breaking Biology Technology:HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Marken Ensures Safe Transportation Of Select Agents And Toxins 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 3Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 4
... CHICAGO, Jan. 4, 2011 Advanced Life Sciences ... ), a biopharmaceutical company engaged in the discovery, development ... of infection, oncology and respiratory diseases, today announced that ... Healthcare Conference held January 10-12th in San Francisco. ...
... LANSING, Mich., Jan. 4, 2011 Neogen Corporation (Nasdaq: ... the second quarter of FY 2011, which ended Nov. 30, ... in the quarter rose to $6,110,000, or $0.26 per share, ... revenues increased 25% to $43,931,000, compared to the prior year,s ...
... Vaccinex, Inc. announced today that it has received clearance ... trial to assess the safety, tolerability, pharmacokinetics and pharmacodynamics ... advanced solid tumors. (Logo: http://photos.prnewswire.com/prnh/20101101/NY92716LOGO ) ... blocks the activity of semaphorin 4D (SEMA4D).  It is ...
Cached Biology Technology:Advanced Life Sciences to Present at the Biotech Showcase™ 2011 Conference 2Neogen Reports 33% Increase in Net Income 2Neogen Reports 33% Increase in Net Income 3Neogen Reports 33% Increase in Net Income 4Neogen Reports 33% Increase in Net Income 5Vaccinex, Inc. Initiates Clinical Trial of Novel Therapeutic Antibody in Cancer Patients With Advanced Solid Tumors 2
Annexin V Binding Buffer, 10X Concentrate Buffer , 50 ml Consult technical datasheet for details....
...
IHC Select Anti-p53, prediluted,wild & mutant, a.a. 19-26, clone DO-7 Immunogen: Human p53 Available Date: 37775...
Tube-O-DIALYZER Floats, small....
Biology Products: