Navigation Links
Finding is a feather in the cap for researchers studying birds' big, powerful eyes
Date:6/23/2011

BETHESDA, Md., June 23, 2011 Say what you will about bird brains, but our feathered friends sure have us -- and all the other animals on the planet -- beat in the vision department, and that has a bit to do with how their brains develop.

Consider the in-flight feats of birds of prey: They must spot their dinner from long distances and dive-bomb those moving targets at lightning speed. And then there are the owls, which operate nimbly on even the darkest nights to secure supper in swift swoops. Some birds have ultraviolet sensitivity; others have infrared sensitivity. To boot, some birds can even see the Earth's magnetic field.

Much of the credit for avian visual acuity goes to the extraordinary retina, which grows out of the brain during development, making it an official component of the central nervous system. Indeed, the avian retina is far more complex in structure and composition than the human retina, and it contains many more photoreceptors -- rod- and cone-shaped cells that detect light and color, respectively.

While researchers over the years have come to better understand much about the avian retina, many nagging questions remain. For Thorsten Burmester's research team at the University of Hamburg, the question was this: How does such a productive retina sustain itself when the avian eye has very few capillaries to deliver oxygen to it? After all, it has to "breathe," so to speak.

"The visual process in the vertebrate eye requires high amounts of metabolic energy and thus oxygen," Burmester's group writes in this week's Journal of Biological Chemistry. "Oxygen supply of the avian retina is a challenging task because birds have large eyes, thick retinas and high metabolic rates, but neither deep retinal nor superficial capillaries."

To answer the question, Burmester's team took a closer look at a protein that they discovered exists in large quantities in photoreceptor cells of the avian eye -- and o
'/>"/>

Contact: Angela Hopp
ahopp@asbmb.org
240-283-6614
American Society for Biochemistry and Molecular Biology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Plant pathologist finding Kansas wheat fields a molecular battleground this season
2. Researchers improve method for finding genetic mistakes that fuel cancer
3. Surprising findings from studies of spontaneous brain activity
4. Rochester autism researchers present new findings at IMFAR
5. TGen findings contribute to understanding of diabetic kidney disease
6. Findings may help keep pancreatic disease off the menu
7. Finding shows potential way to protect neurons in Parkinsons, Alzheimers, ALS
8. Finding a way to extend tomato shelf-life
9. Saint Louis University findings: Dont pitch stockpiled avian flu vaccine
10. New findings in Indias Bt cotton controversy: Good for the field, bad for the farm?
11. New findings provide cost, benefit data for Florida citrus industry
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... stressed they are often grouchy, grumpy, nasty, distracted or ... EPFL have just highlighted a fundamental synaptic mechanism that ... of social skills and cognitive impairment. When triggered by ... the brain. This was revealed by a work published ... team went to look for answers in a region ...
(Date:9/18/2014)... research has found clownfish larvae can swim up to 400 ... able to cope with environmental change. , Clownfish spend their ... but as babies they must wander the open ocean, says ... Excellence for Coral Reef Studies (Coral CoE) at James Cook ... go, but now we,ve been given a rare glimpse into ...
(Date:9/17/2014)... creation of the Santa Ana Wildfire Threat Index ... of the powerful, hot, dry Santa Ana wind, which ... was introduced Sept. 17 by the U.S. Forest Service, ... Electric. , The index includes four classification levels ranging ... help fire agencies and other emergency responders, the media ...
Breaking Biology News(10 mins):How stress tears us apart 2Nemo's epic journey to find a new home 2UCLA scientists play key role in developing new Santa Ana Wildfire Threat Index 2
... Norwich scientists are on the trail of some of the ... targets are the parasitic water fungus that causes powdery mildew ... and tomatoes and downy mildew in cruciferous vegetables and other ... for a while," said Professor Sophien Kamoun, head of the ...
... original sweetener, manufactured by honey bees long before humans ... gatherers, as do ancient Egyptian reliefs. From Mesopotamia to ... every human culture and cuisine. "Honey is fascinating; ... unbelievable activity. It,s just an amazing substance," said University ...
... how a network of repair proteins enables bacteria to prioritise ... DNA molecules that carry the instructions necessary for living cells ... the University of Bristol and published in Molecular Cell ... the DNA repair systems of bacteria and humans than had ...
Cached Biology News:Gene hunters tackle crop diseases 22 books explore the history and delights of honey, bees and beehives 22 books explore the history and delights of honey, bees and beehives 32 books explore the history and delights of honey, bees and beehives 4New research reveals details of microbe's extraordinary maintenance and repair system 2
(Date:9/19/2014)... 2014  An entire month is dedicated to one ... Charcot-Marie-Tooth disease (CMT) – a debilitating neuromuscular disease affecting ... atrophy, weakness, and foot and hand deformities. CMT affects ... CMT is a progressive disease, and over time patients ... devices such as leg braces, wheelchairs and scooters to ...
(Date:9/19/2014)... , September 19, 2014 BioTech ... developments, patents and results of studies and trials.  Companies ... and Company (NYSE: LLY ), Gilead Sciences ... CELG ) and Arena Pharmaceuticals Inc. (NASDAQ: ... in developing prodrug therapeutics for the treatment of cancer, ...
(Date:9/19/2014)... 2014 , The first grants ... Paediatric Endocrinology (ESPE) Meeting  Investment supports innovative ... in the field of growth  , EMD ... Germany , today announced the first recipients of ... awards were announced during a Satellite Symposium organized by ...
(Date:9/18/2014)... , Sept. 18, 2014 About ... testing, is performed outside a clinical laboratory. It ... in administrating appropriate treatments and medication. POCT is ... prevalence of lifestyle diseases such as diabetes, heart ... user-friendly. POCT devices are standardized to minimize errors ...
Breaking Biology Technology:September is Charcot-Marie-Tooth (CMT) Awareness Month - Scheduled events, activities and important partnerships announced throughout the month! 2Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 2Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 3Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 4Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 5Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 6Biotech Companies Pushing Sector Higher With Recent Therapeutic Advancements & Patent Approvals - Company Wins Summary Judgment For Prodrug Patent 7EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3POCT Market in China 2014-2018 2
... MA , July 21 /PRNewswire-FirstCall/ - SemBioSys Genetics ... proteins and oils utilizing its novel plant expression systems, today ... as President of US and International Operations. Mr. Pierce will ... will offer the Company a broader market to better exploit ...
... July 20 Caliper Life Sciences, Inc. (Nasdaq: CALP ... financial results at 9:00 a.m. ET on Tuesday, August ... McAree , Chief Financial Officer, will host the call. Management will discuss ... , , , ...
... EXTON, Pa. , July 20 Fibrocell Science, Inc. ... autologous cell therapies for aesthetic, medical and scientific applications, announced today that ... its board of directors. , , ... Dr. Korkos currently serves as President of both Plastic Surgery Associates and ...
Cached Biology Technology:SemBioSys Appoints President of US and International Operations and Announces the Appointments of Three Vice Presidents 2SemBioSys Appoints President of US and International Operations and Announces the Appointments of Three Vice Presidents 3SemBioSys Appoints President of US and International Operations and Announces the Appointments of Three Vice Presidents 4Caliper Life Sciences' Second Quarter 2010 Financial Results Conference Call Notice 2Fibrocell Science, Inc. Announces Addition of Dr. George J. Korkos to Board of Directors 2Fibrocell Science, Inc. Announces Addition of Dr. George J. Korkos to Board of Directors 3
...
... deuterium atoms at the 9, 10, 12, and ... an internal standard for the quantification of 13(S)-HODE ... by incubation of linoleic acid with plant and ... the adhesion of tumor cells to the endothelium ...
... Cells and TriEx Insect Cell Medium are ... constructs. This cell/medium combination has been selected ... high protein expression levels observed specifically with ... note that our Ready-Plaque Sf9 Cells and ...
...
Biology Products: