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:4/17/2014)... the Cell Press journal Current Biology on ... novel sex lives. The Brazilian insects, which represent four ... , are the first example of an animal with ... identified in several different animals, Neotrogla is ... also reversed," says Kazunori Yoshizawa from Hokkaido University in ...
(Date:4/17/2014)... are chock full of wild animals and plant life, ... fungi are churning away in the soil, decomposing organic ... the vital role these fungi play in ecological systems, ... team of scientists has generated a genetic map of ... The work was published this week in the ...
(Date:4/17/2014)... about domestication derive from Charles Darwin, whose ideas ... practices during the 19th century, a period when ... It is from Darwin that we inherit the ... from wild species and total human control over ... in this industrial setting has been applied too ...
Breaking Biology News(10 mins):In sex-reversed cave insects, females have the penises 2Stanford biologists help solve fungal mysteries 2Stanford biologists help solve fungal mysteries 3The story of animal domestication retold 2The story of animal domestication retold 3The story of animal domestication retold 4
... dependent on the sun. Sunlight does not only supply ... So-called photoreceptors activate the processes of germination, leaf development, ... component of a photoreceptor may be replaced by a ... effects on complete plants are now described in the ...
... a study about to be published in EPJ E, French ... the behaviour of a thin layer of cells in contact ... fluid or elastic films. Understanding the mechanism by which a ... the layer,s structural integrity, bears great significance because the human ...
... release is available in Spanish . , Due ... region, many experts have claimed that they are millennia old but ... explained to SINC by the ecologist Bernat Claramunt from the Centre ... from this centre has now analysed the ages of the famous ...
Cached Biology News:The millennium-old olive trees of the Iberian Peninsula are younger than expected 2
(Date:1/15/2014)... , Jan. 15, 2014  Bill Jacobs Automotive, a group of ... teaming up with the Heartland Blood Center and offering free ... The drive takes place Saturday, Jan. 18 at the Bill ... p.m. (Photo: http://photos.prnewswire.com/prnh/20140115/MN46637 )  The ...
(Date:1/15/2014)... 2014 Cynvenio, a cancer diagnostics company ... genomic analysis of tumor cells in the bloodstream, today ... cancer decision support application powered by CollabRx, Inc. ... genomic test, Therapy Finder will provide breast cancer patients ...
(Date:1/15/2014)... 15, 2014 A study has been launched ... Formula 1 track could help to tackle the problem of ... Stowhealth (a GP surgery based in Stowmarket) and academics at ... Telemetry technology, which is inspired by equipment used ...
(Date:1/15/2014)... 15, 2014 DTS Language Services, Inc ... Web Portal for Life Science organizations who need document translations. ... subject matter of their documents in advance with a selection ... time-to-delivery of translations, often a critical factor in clinical and ...
Breaking Biology Technology:Join the Bill Jacobs Auto blood drive and receive a free oil change 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4DTS Improves Efficiency for Life Science Document Translations 2
... proven cost-effective, Genomatica looks to develop demonstration plant ... Genomatica, a sustainable chemicals company, announced today that ... milestone toward the production of commercial grade 1,4-butanediol ... The company has demonstrated that it can ...
... Inc. (Nasdaq: MITI ), a biopharmaceutical company developing novel, ... today announced that it will host a webcast on June 8, ... 6th at the 14th Congress of the European Hematology Association. ... www.micromet-inc.com . , , Forum: ...
... Lexicon Pharmaceuticals, Inc. (Nasdaq: LXRX ... vice president, corporate development and chief financial officer. Mr. ... biotechnology and pharmaceutical industry in corporate finance, corporate and business ... , Prior to joining Lexicon, Mr. Bansal was chief financial ...
Cached Biology Technology:Genomatica Produces Pure BDO From Natural Sugars 2Genomatica Produces Pure BDO From Natural Sugars 3Genomatica Produces Pure BDO From Natural Sugars 4Micromet to Host Conference Call and Webcast to Discuss Blinatumomab Data Presented at EHA on June 8, 2009 2Micromet to Host Conference Call and Webcast to Discuss Blinatumomab Data Presented at EHA on June 8, 2009 3Micromet to Host Conference Call and Webcast to Discuss Blinatumomab Data Presented at EHA on June 8, 2009 4Lexicon Names Ajay Bansal Executive Vice President and Chief Financial Officer 2Lexicon Names Ajay Bansal Executive Vice President and Chief Financial Officer 3
PPOX Immunogen: PPOX (AAH02357, 378 a.a. ~ 478 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Rabbit polyclonal to Raf1 ( Abpromise for all tested applications). entrezGeneID: 5894 SwissProtID: P04049...
KRIT1 Immunogen: KRIT1 (NP_004903, 637 a.a. ~ 737 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Sheep polyclonal to hCG beta core fragment ( Abpromise for all tested applications). Antigen: Full length native protein (purified) from human urine. Entrez GeneID: 1082 Swiss Protein ID...
Biology Products: