Navigation Links
A model photochemical compass for bird navigation
Date:4/30/2008

A team of researchers at Arizona State University and the University of Oxford are the first to model a photochemical compass that may simulate how migrating birds use light and Earth's weak magnetic field to navigate. The team reports in the April 30, 2008, online issue of Nature that the photochemical model becomes sensitive to the magnitude and direction of weak magnetic fields similar to Earth's when exposed to light. The research funded by the National Science Foundation (NSF) demonstrates that this phenomenon, known as chemical magnetoreception, is feasible and gives insight into the structural and dynamic design features of a photochemical compass.

The most common bird migration pattern in the northern hemisphere is to fly north in the summer to breed in the Artic and to fly south to warmer regions for the winter.

Regardless of which way they are flying, migrating birds are important ecologically as a food source for other animals. They also transport plankton, materials involved in plant reproduction and hitchhikers such as ticks and lice, which can carry micro-organisms harmful to human health.

About 50 animal species, ranging from birds and mammals to reptiles and insects, use Earth's weak magnetic field for navigation. Earth's magnetic field ranges from approximately 30 to 60 millionths of one tesla. By comparison, magnetic resonance imaging, or MRI, uses magnetic fields from 1.5 to 3.0 tesla.

Weak magnetic fields are also produced by widely used technologies such as power lines and communications equipment. Because these man-made magnetic fields can disrupt animal navigation, "it is essential for humans to understand how animals navigate using Earth's weak magnetic field and the effects of human activity on animal navigation," according to Devens Gust, foundation professor of chemistry and biochemistry at Arizona State University.

Even though the mechanisms of a bird's internal compass have been s
'/>"/>

Contact: Jennifer Grasswick
jgrasswi@nsf.gov
703-292-4972
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Novel 3-D cell culture model shows selective tumor uptake of nanoparticles
2. A new kind of rat model
3. JILA finds flaw in model describing DNA elasticity
4. Smithsonian researchers develop models to assess wetland health
5. Prediction of RNA pseudoknots using heuristic modeling with mapping and sequential folding
6. Simulating kernel production influences maize model accuracy
7. MIT model could improve some drugs effectiveness
8. Model for the assembly of advanced, single-molecule-based electronic components developed at Pitt
9. Improving detection of nuclear smuggling goal of computer model of mechanical engineer
10. New chimeric mouse model for human liver diseases, drug testing
11. Study finds first-ever genetic animal model of autism
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A model photochemical compass for bird navigation
(Date:4/23/2014)... transformed the energy landscape in the U.S., but ... among the energy industry, residents and agricultural interests ... that degraded water quality is a potential risk ... appears in the ACS journal Environmental Science ... colleagues point out that a major criticism of ...
(Date:4/23/2014)... or simply cli-fi, is a newly coined term for novels ... New research from University of Copenhagen shows how these fictions ... the potential consequences of climate change and imagine other living ... data on changes in the atmosphere; it is also a ... books we read and the films we see. And there ...
(Date:4/23/2014)... disease is the first cause of dementia and affects ... cure has yet been found. One of the reasons ... cellular mechanisms which cause alterations in nerve transmissions and ... the disease., Researchers from the Institute of Neuroscience at ... mechanism involved in memory consolidation and were able to ...
Breaking Biology News(10 mins):How to avoid water wars between 'fracking' industry and residents 2Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3Loss of memory in Alzheimer's mice models reversed through gene therapy 2
... (May 23, 2008) A study led by Gregg ... Medical Center/NewYork-Presbyterian and chairman of the Cardiovascular Research Foundation, ... the direct thrombin inhibitor bivalirudin during primary angioplasty had ... rate of major bleeding, and a lower mortality rate ...
... May 22, Shire plc (LSE: SHP)(NASDAQ: SHPGY ... High Court approved,the scheme of arrangement between Shire ... The scheme, which becomes effective on 23 May ... Limited (LSE: SHP,NASDAQ: SHPGY) becoming the new holding ...
... international team of scientists surveying the waters of the ... has discovered for the first time high levels of ... raising concern for marine ecosystems from Canada to Mexico. ... research vessel, also discovered that this corrosive, acidified water ...
Cached Biology News:Findings released from 1 of the largest percutaneous coronary intervention trials ever 2Court Approves Scheme of Arrangement 2Court Approves Scheme of Arrangement 3Pacific coast turning more acidic 2Pacific coast turning more acidic 3
(Date:1/14/2014)... , Jan. 14, 2014 As pet owners drew up their ... of them wrote: "Take better care of my furry companion." Nowadays ... clothes and top-brand carrying cases to take the little canine or ... also feel compelled to buy some pricey toys at the pet ...
(Date:1/14/2014)... and BETHESDA, Md. , Jan. 14, ... with two institutes from the National Institutes of Health ... bringing safer, more effective treatments to patients on a ... for Advancing Translational Sciences (NCATS) and the National Eye ...
(Date:1/14/2014)... Jan. 14, 2014  RXi Pharmaceuticals Corporation (OTCQX: RXII), ... commercializing innovative therapies addressing major unmet medical needs ... the Notice of Allowance from the United States ... RNAi compounds (sd-rxRNA®), for the treatment of fibrosis. ...
(Date:1/14/2014)... Washington, USA, and Cardiff, UK (PRWEB) January 13, 2014 ... photonics technology development leader with more than 20 years ... society for optics and photonics . Hainsey will serve ... are delighted to have Dr. Hainsey join SPIE as ...
Breaking Biology Technology:New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
... 16 Exiqon today announces,the adoption of the ... the company,s commitment to expanding its business to ... guide treatment,decisions in oncology., Exiqon is pleased ... for their,clinical laboratory diagnostics business, Exiqon Diagnostics. This,progressive ...
... Oct. 16 Gaining a first-cycle,approval for a ... $640,million in incremental revenue on average, according to ... of PAREXEL International (Nasdaq: PRXL ),and leading ... device industries. According to the PAREXEL Consulting,analysis, 60 ...
... of carbon nanotubessorted by centrifuge for lengthmaterials scientists ... (NIST) have made some of the most precise ... mats of nanotubes become transparent, conducting sheets. Their ... relatively homogeneousnot overly short, but uniform in length ...
Cached Biology Technology:Exiqon A/S Announces U.S. Subsidiary Name Change From Oncotech, Inc. to Exiqon Diagnostics, Inc. 2Exiqon A/S Announces U.S. Subsidiary Name Change From Oncotech, Inc. to Exiqon Diagnostics, Inc. 3PAREXEL Consulting Quantifies Speed to Market: First-Cycle Approval for NME Produces $640 Million in Incremental Revenue on Average 2PAREXEL Consulting Quantifies Speed to Market: First-Cycle Approval for NME Produces $640 Million in Incremental Revenue on Average 3PAREXEL Consulting Quantifies Speed to Market: First-Cycle Approval for NME Produces $640 Million in Incremental Revenue on Average 4PAREXEL Consulting Quantifies Speed to Market: First-Cycle Approval for NME Produces $640 Million in Incremental Revenue on Average 5Paperwork: Buckypapers clarify electrical, optical behavior of nanotubes 2
... When Ambion introduced the highly potent TURBO DNase ... new standard was set in DNA removal capabilities. ... DNase I that is much more efficient than ... amounts of unwanted DNA. TURBO DNase binds DNA ...
...
Lyophilized. Purity: ≥90% by electrophoresis. Reconstitute in 0.3% NaCl. Prepared from serum that has been shown by certified tests to be negative for HBsAg and for HIV and HCV antibodies. ...
Porcine Pulmonary Artery Endothelial Cells (PPAEC) (>500,000 cells)...
Biology Products: