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:12/5/2014)... MOUNTAIN VIEW, Calif. , Dec. 4, 2014 ... and safety has boosted investments in new testing ... products has also given rise to a range ... driven by the requirements of Generation Y, which ... digital technologies. As a result, product development strategies ...
(Date:12/4/2014)... Dec. 3, 2014  Crossmatch™, a leading provider ... its DigitalPersona ® Pro Enterprise software and ... deployed throughout First Bank branch locations in ... Carolina and Virginia. First Bank, a progressive ... Pines, North Carolina , selected the Crossmatch ...
(Date:12/3/2014)... , Dec. 2, 2014 As part ... readers, Inception Technologies is pleased to announce the release ... for customers to collect the workforce data that they ... that have been left by existing readers. Many such ... interface, connectivity and modern technology. Older models force users ...
Breaking Biology News(10 mins):Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3Inception Technologies to Release New Biometric Reader 2
... Stanford University research team has been awarded $6.27 million ... to be more energy efficient at home. The funding, ... U.S. Department of Energy,s Advanced Research Projects Agency-Energy (ARPA-E), ... come from Stanford and the California Energy Commission. ...
... skeleton made of segments, the vertebrae. During development of the embryo, ... head-end to the tail-end: the first segments to be added become ... ribs and the last ones the vertebra located in the tail ... it is crucial that, on the one hand, each segment, as ...
... October 27 2009 - The Government of Nepal announced today ... Landscape by 900 sq km, which will increase critical habitat ... at the inaugural session of the Kathmandu Global Tiger Workshop. ... government would establish a National Tiger Conservation Authority as well ...
Cached Biology News:Stanford researchers awarded $6.27 million to study energy efficiency and human behavior 2The skeleton: Size matters 2Nepal expands critical tiger habitat 2
(Date:12/19/2014)... 2014 With only 2 weeks left ... on Sartorius Biohit products . The product specials include ... Electronic Pipette Trade-in Program, and free pipette tips. , ... around the world. They are ideal for lab technicians ... ,     Full volume range of 0.1 uL ...
(Date:12/17/2014)... New York, NY (PRWEB) December 16, 2014 ... undergone significant changes since 2013, which is why IBISWorld ... one, this industry continues to benefit from an intensified ... 2014, the proposal for new emission standards for power ... affected industry operators. According to IBISWorld Industry Analyst Sarah ...
(Date:12/17/2014)... Once more, EMAAR has selected BioShaft ... water treatment plant to phase one of BayLaSun, a ... years ago Bioshaft successfully supplied and operated a packaged ... towers with an occupancy of 900 residences. The ... per day and was signed on September 16th, 2014, ...
(Date:12/17/2014)...  Vermillion, Inc. (NASDAQ: VRML ), a ... the next step in its expanded strategy to rebuild ... the naming of current Chief Operating Officer, Valerie ... current Chairman of the Board and CEO James ... changes are effective January 1, 2015. "Jim ...
Breaking Biology Technology:Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 4
... law firm of Finkelstein,Thompson LLP announces that a class ... Court for the Southern District of New York on,behalf ... GPC Biotech AG,("GPC Biotech" or the "Company") (Nasdaq: ... inclusive (the "Class Period"). Finkelstein Thompson LLP,is investigating similar ...
... BioSciences Inc.,(AMEX: YMI , TSX: YM, AIM: ... differentiated products for patients worldwide,today announced that Oncoscience ... of the humanized EGFR-targeting monoclonal antibody,nimotuzumab, has advised ... commence in Europe. - A ...
... -- Sinovac Biotech Ltd. (Amex:,SVA), a leading ... shareholders today that the Annual General Meeting ... been postponed due the geographical,nature of its ... of,proxy materials. The Company is currently working ...
Cached Biology Technology:Finkelstein Thompson LLP Announces GPC Biotech AG Investigation 2YM BIOSCIENCES', EUROPEAN PARTNER, ONCOSCIENCE AG, ANNOUNCES INITIATION OF ADVANCED NIMOTUZUMAB TRIALS IN ADULT GLIOMA AND PANCREATIC CANCER 2YM BIOSCIENCES', EUROPEAN PARTNER, ONCOSCIENCE AG, ANNOUNCES INITIATION OF ADVANCED NIMOTUZUMAB TRIALS IN ADULT GLIOMA AND PANCREATIC CANCER 3YM BIOSCIENCES', EUROPEAN PARTNER, ONCOSCIENCE AG, ANNOUNCES INITIATION OF ADVANCED NIMOTUZUMAB TRIALS IN ADULT GLIOMA AND PANCREATIC CANCER 4Sinovac Announces Postponement of Annual General Meeting 2
... Reagent A - Fixation medium Reagent B ... intended for fixing cells in suspension with ... with Reagent B. This procedure gives antibodies ... morphological scatter characteristics of the cells intact. ...
... polyclonal to JNK1 (phospho T183 + Y185) ... domain containing phosphorylated T183/Y185. Reactivity / Specificity ... yet tested in other species. Background Information ... the ERK, JNK, and p38 kinases. The members ...
... Dako Target Retrieval Solution, pH 9 (x ... buffer, pH 9, intended for heat-induced target ... is well-suited for use on formalin-fixed, paraffin-embedded ... with 0.01 mol/L citrate buffer, pH 6, ...
... been designed to provide a thin film-like barrier when ... slide. This barrier creates the proper surface tension ... on the slide. PAP Pen contains a special ... It can be removed, if desired, by xylene after ...
Biology Products: