Navigation Links
Northern birds are fatter!

"The further birds migrate north for the summer, the faster they put on weight", says Dr Williams (Simon Fraser University, Canada) who has been tracking migrating birds for several years. "This research may have implications for the designation of protected areas which will ensure birds can complete their spring and autumn migrations." Dr Williams will present his research on Tuesday 4th April at the Society for Experimental Biology's Annual Main Meeting in Canterbury [session A4].

"Our data can be used to assess habitat quality and the importance of specific sites for migratory birds, and this can contribute to decisions about whether migratory sites are protected and which sites are prioritised for protection", explains Williams.

Two techniques were used to study Western Sandpipers on their spring journey along the Pacific 'Flyway' from Mexico to Alaska: 80 birds were fitted with radio-telemetry tracking devices and a further 400 had blood samples taken to give measurements of fattening rate. Williams found that birds fatten more rapidly as they move further north ?as they get closer to the breeding grounds - and that the longer the birds spend hanging around at San Francisco Bay (one of the more southerly refuelling sites), the lower their fattening rates.

Such differences in fattening rates cannot simply be explained by differences in the availability of food. "Our current thinking is that the difference in fattening could be caused by differences in behaviour (birds simply feed more intensively in the north) or changes in physiology that the birds experience as they move further north", says Williams. "We know there are major differences in gut structure and digestive enzymes between non-migrating and migrating birds, so there might also be similar alterations in migrating bird's physiology further north, which allow more efficient digestion."


'"/>

Source:Society for Experimental Biology


Page: 1

Related biology news :

1. Red delicious, Northern Spy apples have most antioxidants, chemists find
2. Migratory songbirds have a specialized night-vision brain area
3. The lopsided brain: Attention bias is shared by humans and birds
4. Bobbing birds do it for a reason
5. Mother birds increase progesterone to hatch females
6. Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals
7. Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
8. Displaced songbirds navigate in the high Arctic
9. Oil spills and climate change double the mortality rate of British seabirds
10. Wild birds help to create human flu vaccine
11. Uniquely human component of language found in gregarious birds
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Northern birds are fatter

(Date:5/18/2013)... MD (May 19, 2013) The AGA Research Foundation ... and Damian Augustyn Award in Digestive Cancer, which will ... of Medicine at the University of Pennsylvania, Philadelphia, as ... in pancreas development, regeneration and cancer progression. , "The ... in honor of two distinguished clinicians and AGA Legacy ...
(Date:5/18/2013)... (May 18, 2013) Research presented at Digestive ... digestive health through diet and lifestyle. , ... by reduced muscle strength, fatigue and poor quality ... patients are in remission. A randomized, double blind, ... vitamin D supplementation corresponded to significant relief of ...
(Date:5/17/2013)... AGA Research Foundation announced a new grant that intends ... microbiota, one of today,s most exciting areas of science, ... Research Awards Panel selected Andrew T. Chan, MD, MPH ... Medical School, Boston, as the 2013 AGA-Elsevier Gut Microbiome ... of funding, commencing in July 2013, to test the ...
Breaking Biology News(10 mins):AGA Research Foundation grant furthers digestive cancer research 2Research examines new methods for managing digestive health 2Research examines new methods for managing digestive health 3New gut microbiome research to explore red meat -- colorectal cancer pathway 2
... This release is available in French . </P , ... have found the presence of 356 animal inclusions in completely ... used the X-rays of the European light source to image ... that allows rapid survey of large amounts of opaque amber. ...
... in Spanish . Humidity, environmental ... of the rock, etc give rise to the appearance ... dust accumulation, etc. , The treatments used up to ... almost exclusively, to preserve the beauty of the affected ...
... Science Picks, you can discover recent dramatic developments at Kilauea ... how the USGS helps forecast and notify emergency managers of ... on their way. You can also find out how the ... as you start gearing-up for baseball season, learn about the ...
Cached Biology News:Scientists discover 356 animal inclusions trapped in 100 million years old opaque amber 2New mineralogical techniques contribute to prevent national heritage damage 2New mineralogical techniques contribute to prevent national heritage damage 3USGS April 2008 science picks 2USGS April 2008 science picks 3USGS April 2008 science picks 4USGS April 2008 science picks 5USGS April 2008 science picks 6USGS April 2008 science picks 7USGS April 2008 science picks 8
(Date:5/21/2013)... , May 21, 2013 ... Dialysis and Transplant Association) is the biggest congress in ... replacement therapy. Nearly 10,000 participants are in ... the latest research findings. New pioneering studies have been ... "SOLUBLE FERRIC PYROPHOSPHATE (SFP) ADMINISTERED VIA HEMODIALYSATE REDUCES ESA ...
(Date:5/21/2013)... , May 21, 2013 ... Market Research ( http://www.transparencymarketresearch.com ) "Biochip Products and Services ... Tests) - U.S. Industry Analysis, Size, Share, Growth, Trends and Forecast, ... in 2011 and is expected to grow at a ... an estimated value of USD 4.7 billion in 2018. ...
(Date:5/21/2013)... May 21, 2013  MacroGenics, Inc. today announced ... margetuximab (MGAH22), an Fc-modified chimeric monoclonal antibody (MAb), ... HER2 oncoprotein," will be presented at the 2013 ... Oncology during the Developmental Therapeutics - Immunotherapy Oral ... – 4:30 PM.  The presentation will describe the ...
(Date:5/21/2013)... 2013 Revolutionary Science, the manufacturer of ... announced today that they have expanded their colony counter ... IncuCount, IntelliCount, InCount and ImpressCount. These affordable colony ... useful in food microbiology and pharmaceutical manufacturing. , The ... A bright white enclosure with jet black accents ...
Breaking Biology Technology:ERA-EDTA CONGRESS 2013: Late Breaking Clinical Trials 2ERA-EDTA CONGRESS 2013: Late Breaking Clinical Trials 3The U.S. Biochip Products and Services Market is Expected to Reach USD 4.7 Billion in 2018: Transparency Market Research 2The U.S. Biochip Products and Services Market is Expected to Reach USD 4.7 Billion in 2018: Transparency Market Research 3The U.S. Biochip Products and Services Market is Expected to Reach USD 4.7 Billion in 2018: Transparency Market Research 4The U.S. Biochip Products and Services Market is Expected to Reach USD 4.7 Billion in 2018: Transparency Market Research 5MacroGenics Announces Margetuximab (MGAH22) Phase 1 Data Presentation at ASCO; Initiates Phase 2 Clinical Study to Evaluate Activity of Margetuximab in Patients with Metastatic Breast Cancer 2MacroGenics Announces Margetuximab (MGAH22) Phase 1 Data Presentation at ASCO; Initiates Phase 2 Clinical Study to Evaluate Activity of Margetuximab in Patients with Metastatic Breast Cancer 3Revolutionary Science Announces New Automatic and Manual Colony Counting Products 2
... Harry Whelan has become the first Medical ... National Defense University in Washington, D.C. , ,Whelan, a professor ... has signed a two-year contract at the Center for ... from around the country receiving the appointment, he will be ...
... from Sharon Farmer. In the summer of 2001, I ... Senator John Kerry and technology executives in Silicon Valley. At ... presidential campaign, and I had no particular interest in an ... months later, I had the opportunity to interview the Senator ...
... The Croquet Project , a joint software ... (DoIT), the University of Minnesota and ... has announced the release of the Croquet developers release ... technology and peer-to-peer network architecture that supports online learning ...
Cached Biology Technology:Medical College of Wisconsin researcher gets national defense appointment 2John Kerry talks technology 2John Kerry talks technology 3John Kerry talks technology 4UW-Madison releases open 3D collaboration environment 2
50 assays. Provides an easy system for rapid separation of cytosol and particulate fractions that are compatiable with downstream studies....
Eliminate electrical interference from any analog signal, without filtering. Ideal for electrophysiology applications like EKG, EMG, and EEGs. Removes 50/60hz noise and harmonics caused by grounding ...
... 400 Spun Columns, 10. *SizeSep 400 Spun ... 400 base pairs in length. - ... and pre-equilibrated in distilled water containing 0.15% Kathon ... ~ 400 base pairs. *Extremely useful ...
... GFX Purification Kit, 25 purifications. ... cDNA probesProvides efficient removal of unincorporated ... reactions with superior yields of labeled ... purification of cDNA labeled by either ...
Biology Products: