Navigation Links
Simple nerve cells regulate swimming depth of marine plankton
Date:10/18/2011

This release is available in German.

As planktonic organisms the larvae of the marine annelid Platynereis swim freely in the open water. They move by activity of their cilia, thousands of tiny hair-like structures forming a band along the larval body and beating coordinately. With changing environmental conditions the larvae swim upward and downward to their appropriate water depth. Scientists of the Max Planck Institute for Developmental Biology in Tbingen, Germany have now identified some signalling substances in the larval nervous system regulating swimming depth of the larvae. These substances influence the ciliary beating and thus hold the larvae in the preferred water depth. The scientists discovered a very simple circuitry of nerve cells underlying this regulation, reflecting an early evolutionary state of the nervous system.

The locomotory system of many animals is muscle based. However, small marine animals often move by cilia. This type of locomotion is more ancient in evolution than muscle-based locomotion and very common in marine plankton. Besides the annelid larvae, the larvae of many marine invertebrates are part of this plankton, for example larvae of snails, sea shells and starfish.

"Not much is known about how the nervous systems of the marine plankton regulate ciliary beating, since the locomotion of intensely explored model organisms like the fruit fly is based on muscles," says Gspr Jkely. Together with his team at the Max Planck Institute for Developmental Biology and in cooperation with Thomas A. Mnch at the Centre for Integrative Neuroscience in Tbingen, he has examined in detail the nervous system of marine annelid larvae of Platynereis dumerilii.

The ciliary band of Platynereis larvae serves as a swimming motor in the seawater: When cilia beat fast and continuously, larvae swim upward
'/>"/>

Contact: Gaspar Jekely
gaspar.jekely@tuebingen.mpg.de
49-707-160-11310
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Simple little spud helps scientists crack potatos mighty genome
2. Simple test gives accurate prediction of ovulation to help women become pregnant
3. Pregnant women can prevent excess weight gain with simple steps, study finds
4. Catastrophic amphibian declines have multiple causes, no simple solution
5. Simple fungus reveals clue to immune system protection
6. Simpler woodland strawberry genome aids research on more complex fruits
7. Blood simple circuitry for cyborgs
8. Simpler way of making proteins could lead to new nanomedicine agents
9. Simple marine worms distantly related to humans
10. BU School of Public Health finds simple interventions reduce newborn deaths in Africa
11. Simple, ingenious way to create lab-on-a-chip devices could become a model for teaching and research
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Simple nerve cells regulate swimming depth of marine plankton
(Date:10/14/2014)... fly genome for the first time, revealing robust immune ... thrives in pathogen-rich dung piles and garbage heaps. , ... Genome Biology , will increase understanding of house fly ... to resist insecticides, which could lead to novel control ... transmit more than 100 human and animal diseases, including ...
(Date:10/14/2014)... new kind of stem cell that can become either a ... according to a study published today in the journal ... type contradicts current theory on how organs arise from cell ... of, and future treatment for, liver cancer., Thanks to stem ... being made up of more than 200 cell types. The ...
(Date:10/14/2014)... LA JOLLA, CA – October 14, 2014 – Scientists ... $6.6 million from the National Institutes of Health (NIH) ... most prevalent virus-induced hemorrhagic fever disease in Africa. The ... disease and why some patients die, while others survive ... researchers to understand the basic mechanism of how Lassa ...
Breaking Biology News(10 mins):House fly genome reveals expanded immune system 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 3Scripps Research Institute team receives $6.6 million to investigate deadly Lassa virus 2
... pioneering stem cell bandage, believed to be the world,s first ... heal torn meniscal cartilage, can now take the technology to ... the UK,s most successful entrepreneurs. Mr Hugh Osmond, a ... into the UK,s largest sit-down restaurant chain and founded one ...
... The possibility that functional, three-dimensional tissues and organs ... stem cells (ESCs) and induced pluripotent stem cells (iPSCs), ... research, but is also one of the fundamental goals ... has played a central role in informing such efforts, ...
... November 14, 2011 DERMALOG Identification Systems ... a new world record in the identification of fingerprints. ... is capable of correctly identifying the ten fingerprints of ... more than 129 million fingerprints. The renowned international SGS ...
Cached Biology News:World's first stem cell bandage in human clinical trials 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 4World Record in Fingerprint Identification: DERMALOG Correctly Identifies 129 Million Fingerprints in one Second 2World Record in Fingerprint Identification: DERMALOG Correctly Identifies 129 Million Fingerprints in one Second 3
(Date:10/22/2014)... BOSTON , Oct. 22, 2014 /PRNewswire/ ... global specialty pharmaceutical company, and Rhythm, a biopharmaceutical company, ... option to acquire Rhythm,s wholly owned subsidiary, Rhythm Health, ... agonist, for the treatment of diabetic gastroparesis and other ... a successful Phase 2 trial of relamorelin for the ...
(Date:10/22/2014)... The North American crystal oscillator market report ... analysis and forecast of revenue. This market was valued ... reach $623.6 million by 2018, at a CAGR of ... TOC of the North American crystal oscillator market report, ... This also provides a glimpse of the segmentation of ...
(Date:10/22/2014)... October 22, 2014 Involution Studios ... release of a new infographic, Understanding Ebola . ... a beautifully designed, easy to follow informative tool for ... of outbreak, symptoms and prevention. , "As the news ... the 2014 Ebola outbreak represents not only a healthcare ...
(Date:10/22/2014)... CA (PRWEB) October 22, 2014 ... from Sartorius, A & D Weighing, Rice Lake, ... CPA Semi-Micro Balance . The Sartorius CPA Semi-Micro ... an affordable high-quality, precise, and user-friendly laboratory balance. ... of laboratory equipment, their laboratory balances are well ...
Breaking Biology Technology:Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 2Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 3Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 4Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 5The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 2The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 4Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3
... Terumo Americas Holding, Inc., a U.S. subsidiary of Japan,s ... manufacturers with $3.4 billion in sales and operations in ... entered into a Stock Purchase Agreement to acquire all ... company working to commercialize the world,s first point-of-care technology ...
... make it possible to improve photoelectrochemical cells. In the ... into energy, these cells use sunlight to drive chemical ... involves using a light-sensitive semi-conducting material such as cuprous ... reaction. Although it is not expensive, the oxide is ...
... 2011 Biocept, Inc., a privately-held laboratory testing ... of circulating tumor cells (CTCs) in cancer patients, ... the identification of different CTC phenotypes using its ... paper, appearing in the Journal of Oncology ...
Cached Biology Technology:Terumo Americas Holding, Inc., Agrees to Acquire Harvest Technologies Corporation, a Leader in the Development of Point-of-Care Cellular Therapy 2Terumo Americas Holding, Inc., Agrees to Acquire Harvest Technologies Corporation, a Leader in the Development of Point-of-Care Cellular Therapy 3Terumo Americas Holding, Inc., Agrees to Acquire Harvest Technologies Corporation, a Leader in the Development of Point-of-Care Cellular Therapy 4Harnessing the energy of the Sun: New technique improves artificial photosynthesis 2Biocept Demonstrates Multiple Phenotypes of Circulating Tumor Cells (CTCs) in Cancer Patients 2Biocept Demonstrates Multiple Phenotypes of Circulating Tumor Cells (CTCs) in Cancer Patients 3
Recognizes the ~115 kDa NMDA receptor NR1 subunit in rat cortex tissue extracts....
... T4 DNA Ligase catalyzes the formation of ... between double-stranded DNAs with 3' hydroxyl and ... Ligase buffer optimizes ligation which can be ... acids are not substrates for this enzyme. ...
Porcine Coronary Artery Smooth Muscle Cells (PCASMC) (>500,000 cells)...
Sulfadimethoxine (CH-2027)...
Biology Products: