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:9/30/2014)... is published today in the first authoritative scientific study ... on both sides of the grouse moor management debate. ... the Ecohydrology of River basins) project has shown that ... support red grouse populations for gun sports, has significant ... properties, river water chemistry and river ecology. , A ...
(Date:9/30/2014)... all have in common? Unlike most eukaryotic multicellular ... diploid, these organisms are all polyploid, meaning they have ... have 3 and 4 sets of chromosomes, respectively, and ... in fact most plant species are polyploid. Polyploidy, or ... but only recently, with the development of molecular tools, ...
(Date:9/30/2014)... team of environmental scientists and engineers, led by ... a three-year, $5.25 million grant from the U.S. ... Research to make a direct positive impact on ... and disposal of radioactive contaminants. , "Understanding the ... dealing with environmental aspects of nuclear technologies is ...
Breaking Biology News(10 mins):Grouse moor burning causes widespread environmental changes 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 3Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 4Researchers get $5.25 million to advance nuclear technologies in South Carolina 2
... In the rain forests of the Congo, where mammals ... of buzzing insects blankets the atmosphere. Because it ... of the Congo,s insect biodiversity remains largely undiscovered. In ... Zootaxa , researchers at the University of Florida and ...
... of the department of dermatology at Boston University School of ... been named a 2012 Charter Fellow of the National Academy ... is among four faculty members at Boston University nominated to ... who are elected by their peers, represent 98 innovators from ...
... Due to the introduction of exotic pests and ... from forest ecosystems. In some cases, scientists can observe ... other cases, creative puzzle solving and analysis reveal unexpected ... the hemlock tree, University of Illinois landscape and ecosystem ...
Cached Biology News:Discovery of Africa moth species important for agriculture, controlling invasive plants 2Discovery of Africa moth species important for agriculture, controlling invasive plants 3Death of hemlock trees yields new life for hardwood trees, but at what cost to the ecosystem? 2Death of hemlock trees yields new life for hardwood trees, but at what cost to the ecosystem? 3
(Date:9/30/2014)... 30, 2014 Applying a well-known optical phenomenon ... Harvard University has demonstrated the ability to "paint" ... that holds promise for making future, flexible electronic ... sides of next-gen rocket ships and spacecraft with ... through oil in water, it becomes iridescent, revealing ...
(Date:9/30/2014)... Report Details Biosimilar drugs – ... Do you want to find sales potentials of ... for those biological drugs from 2014, helping you ... data, R&D trends, opportunities and selling prospects. In ... 2024 at overall world market, therapeutic class, molecule ...
(Date:9/30/2014)... Proove Biosciences , the commercial ... announce a new genetic test built upon research from ... Test will provide physicians with an objective way ... levels are stratified between individuals. With this new test, ... has a genetic predisposition that will affect their pain ...
(Date:9/30/2014)... Fast, semi-automatic creation of ... documents ChemAxon , a leader ... for life science research, launches ChemCurator, an application ... from documents. Markush structures are essential ... and understanding Markush structures is a difficult and ...
Breaking Biology Technology:Taking thin films to the extreme 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2
... Sept. 25 We are very proud to,announce ... Inc.,Outstanding customer service, product reliability, and a global,distribution ... company resulting,in a more powerful union of innovative ... product development. In 1980 Cotop International was ...
... 25 Medivation, Inc.,(Nasdaq: MDVN ) today announced ... the,inaugural companies in the new NASDAQ(R) NeuroInsights(R) Neurotech Index.,The ... return basis (Nasdaq:,NERV) and a total return basis (Nasdaq: ... 32 companies in the,neurotechnology industry is testament to our ...
... GeneGo, Inc., the leading,systems biology tools company, announced ... licensed access to all major GeneGo products. Using ... Squibb will have the ability to start with ... from both chemistry,and biology domains. Bristol-Myers Squibb can ...
Cached Biology Technology:Medivation Selected as Founding Member of New NASDAQ(R) NeuroInsights(R) Neurotech Index 2Medivation Selected as Founding Member of New NASDAQ(R) NeuroInsights(R) Neurotech Index 3GeneGo Enters Multi-Year Agreement With Bristol Myers Squibb for Access to GeneGo Software Suite and Databases 2
... exchange media are hydrophilic, ... binding capacity. The UNOsphere ... strong cation exchanger with ... 120 micrometers. Fully supported ...
... This CLS number is a new ... Cornings product number. If showing no ... old Sigma-Aldrich number (Z71,487-9) or contact ... clarifier: centre neck 100 mm, No. ...
Packaging: 6 bottles for 1 l ready-to-use-solution ID clarifier: ready-to-use solution ...
... S-X media are neutral, porous ... exclusion chromatography of lipophilic polymers ... organic eluents. The beads are ... carbon tetrachloride, dimethylformamide, ketones, aromatics, ...
Biology Products: