Navigation Links
Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals

Magnetic orientation is critical to the migratory success of many bird species. By studying the influence of light on the ability of migratory birds to orient to magnetic signals, researchers have found clues to suggest that birds' orientation abilities may be more complex than previously thought and that birds may be able to interpret magnetic signals by more than one mechanism. The work is reported in Current Biology by a team including Thorsten Ritz, of the University of California, Irvine, and Wolfgang and Roswitha Wiltschko, of the University of Frankfurt, Germany.

It has been known for many years that birds possess a magnetic "inclination compass," which essentially allows birds to obtain directional information from the magnetic field by interpreting the angle of magnetic-field lines with regard to the horizon rather than by interpreting the magnetic field's polarity. Previous work by Dr. Ritz had suggested that in interpreting magnetic signals, birds employed a so-called chemical compass that worked by way of chemical reactions in specialized photopigments in their eyes. The chemical-compass idea implied that magnetoreception was light dependent, and this possibility was subsequently given support by work from the Wiltschko team showing that the orientation of European robins, a night-migrating species, was influenced by the intensity of light in the blue-green spectrum.

In the present study, the Ritz and Wiltschko groups teamed up to analyze the orientation behavior under turquoise light in detail and revealed an unexpected phenomenon: Increasing the intensity of turquoise light changes the birds' orientation significantly, in comparison to dimmer light levels. The researchers found that in dim turquoise light, similar to that found about 33 minutes after sunset, the birds show normal migratory orientation, with the seasonal shift between southerly directions in autumn and northerly directions in spring. Tests under specific magnetic conditi
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Researchers discover way to make cells in the eye sensitive to light
2. Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine
3. Bacteria collection sheds light on urinary tract infections
4. Sea skate experiment sheds light on human cell transport
5. X-Ray Beams And Fruit Fly Flight Simulator Aid Scientists View Of Muscle Power
6. McGill researchers shed light on formation of carcinogen in food
7. Scientists discover how plants disarm the toxic effects of excessive sunlight
8. Medical molecules designed to respond to visible light that can penetrate tissue
9. Genetic defects give the immune system the green light to attack the pancreas
10. Researchers find gene that may be at root of potato blight
11. Remote control flies? Fly behavior controlled by laser light
Post Your Comments:
(Date:12/11/2014)... SALEM, N.C. , Dec. 10, 2014  That blood ... for quite a while. Hypertension – the medical term for ... in the early 1800s, and the inflatable cuff that,s used ... That doesn,t, however, mean there,s nothing new about hypertension, its ... some long-held beliefs about the condition and the best ways ...
(Date:12/10/2014)... 2014  Valencell, a leader in performance biometric data ... demand from its licensees for highly accurate, clinically validated ... solely coming from fitness and health sectors, but first ... wearable is only as useful as the biometric data ... driver in long-term mass consumer adoption of wearable products," ...
(Date:12/10/2014)... , Dec. 08, 2014 Research and ... the addition of the "Biometrics Market in ... http://photos.prnewswire.com/prnh/20130307/600769 ... projects such as rural banking and upgradation of ... trends witnessed in the market. Besides the aforementioned ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4Wearable Technology Products Demand Highly Accurate Biometric Technology 2Biometrics Market in Japan 2014-2018: Key Vendors are DDS, Fujitsu, Hitachi and NEC 2
... its eruption in early June, several NASA satellites have captured ... Chilean Volcano called Puyehue-Cordn Caulle and have tracked it around ... FLICKR image gallery that shows the progression of the plume ... Complex includes the Puyehue volcano, the Cordn Caulle rift zone ...
... 15, 2011 A first of its kind combination ... Oak Ridge National Laboratory is providing a close-up look ... a major component of plant cell walls, aggregates to ... cellulosic ethanol. The exact shape and structure of the ...
... mutations that add up over time could create an evolutionary ... traits, researchers from the University of Pittsburgh and the University ... in the Proceedings of the National Academy of Sciences ... DNA known as transcriptional enhancerswhich determine the when, where, and ...
Cached Biology News:NASA satellite gallery shows Chilean volcano plume moving around the world 2NASA satellite gallery shows Chilean volcano plume moving around the world 3ORNL neutrons, simulations reveal details of bioenergy barrier 2Leaky genes put evolution on the fast track, Pitt and UW-Madison researchers find 2
(Date:12/19/2014)... (PRWEB) December 19, 2014 Charm Sciences ... test for the Detection of Aflatoxin M1 in raw ... receive independent third party validation. The peer reviewed report ... of the Institute for Agricultural and Fisheries Research (ILVO-T&V) ... , Aflatoxin B1, the most toxic aflatoxin and ...
(Date:12/19/2014)... Bina Technologies, Inc. (Bina, Redwood ... have been acquired by Roche (SIX: RO, ROG; OTCQX: ... company that provides a big data platform for centralized ... for the academic and translational research markets.  Bina will ... continue to focus on development of their innovative genomic ...
(Date:12/19/2014)... December 18, 2014 Today, ... its pilot production facility and future company headquarters ... produce innovative new materials that safely and effectively ... only because of its historic, strong support for ... to attract leading edge, technology-based companies such as ...
(Date:12/19/2014)... 18, 2014 iLab Solutions, the global ... of Siri Bryant as the new Director of Institutional ... Core Implementations. These two new leadership positions were created ... by ensuring that iLab continues to meet the needs ... four years, iLab has been deployed at over 450 ...
Breaking Biology Technology:Charm Sciences Achieves Independent Validation of First 15 Minute Quantitative Screening Method for Aflatoxin M1 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 2Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 4iLab Solutions Announces Two New Leadership Positions to Meet the Needs of Its Growing Customer Base 2
... of graphite, a piece of Scotch tape and a silicon ... just one atom thick -- but strong enough to contain ... unlike your average party balloon -- or even a thick, ... impermeable to even nimble helium atoms. , The research, by ...
... KNDL ), a,leading, global full-service clinical research organization, ... PharmD, will,participate in the annual UBS Global Life ... Grand Hyatt New York, Park Avenue at Grand,Central, ... is,scheduled for Wednesday, September 24 at 9:30 a.m. ...
... Audio Webcast Thursday, September 25, 2008, SAN DIEGO, ... announced today that Kevin Gorman, President and Chief,Executive Officer ... Life Sciences Conference at the Grand Hyatt in New ... 25, 2008 at 10:00,a.m. Eastern Time (ET) /7:00 a.m. ...
Cached Biology Technology:CU scientists create world's thinnest balloon -- just one atom thick 2Neurocrine Biosciences to Present at the UBS Global Life Sciences Conference 2
... Affinity Life Sciences can provide custom microplate coating using ... washes a variety of plate formats. We can also accommodate ... volume range of 0.5-320 L):, , ... 96 well microplate, ...
...
... the first biological reagent that ... and not just by inhibiting ... anti-mycoplasma agent that can be ... directly. The cytotoxicity of Mynox ...
Mynox is intended for research use only. Mynox is used for the elimination of Mycoplasma and Acholeplasma in cell and virus cultures, and other biologicals....
Biology Products: