Navigation Links
Shorebirds shape up and ship out
Date:1/20/2010

Some Canadian shorebirds have had to get fit or die trying. Research published in the open access journal BMC Ecology has found that the average Pacific dunlin has lost weight and spends more time in flight as a response to the increased threat of predation from their arch-enemy, the peregrine falcon.

Fortunately for the falcon, the outlawing of the highly toxic chemical fertilizer DDT in the 1970s has led to an increase in their population. Bad luck though for Pacific dunlins, which once enjoyed lazy winter afternoons roosting in relative safety on the shore of the Fraser River estuary in British Columbia. Drawing on a pool of data spanning four decades, a team of ecologists led by Ronald Ydenberg from Simon Fraser University has found that the dunlins have had to adapt their behavior and their diets in order to survive. Ydenberg says, "In the past, dunlins stored up fat reserves in the autumn months so that they could survive the harsh Canadian winters when food is short. What we're seeing now, however, with the increase in numbers of peregrine falcons, is that the dunlins have to consider the energy trade-off between preparing for starvation and being able to escape quickly".

Starving during the winter is still a very real possibility for Pacific dunlins, but they can no longer rest easy now that peregrine falcons are around. Some dunlins will fly long distances to find safer roosts, but many now choose to take to the air en masse during peak peregrine feeding times instead. "Over-ocean flocking is energetically expensive", says team member Dick Dekker, "but the risk from predators is now greater than the threat of starvation". When a streamlined hunter is hot on your tail, it doesn't pay to be a fat bird. The average weight of a Pacific dunlin has decreased by 2-4g over the past 40 years. These adaptations, along with spending more time flying out at sea, help the dunlin to escape predators so that they can safely make it throu
'/>"/>

Contact: Graeme Baldwin
graeme.baldwin@biomedcentral.com
44-203-192-2165
BioMed Central
Source:Eurekalert

Page: 1 2

Related biology news :

1. Facial attraction -- choice of sexual partner shaped the human face
2. Shape encoding may start in the retina
3. Grant supports study of abnormal ring-shaped chromosomes
4. Secure Services Corp. Achieves Milestone in United States Identity Protection with the Launch of the SSC SHAPE Card Management Solution
5. How cells keep in shape
6. New process makes nanofibers in complex shapes and unlimited lengths
7. Particle accelerator may reveal shape of alternate dimensions
8. Crop scientists discover gene that controls fruit shape
9. Ozone hole recovery may reshape southern hemisphere climate change
10. Study links low-frequency hearing to shape of the cochlea
11. Courtship pattern shaped by emergence of a new gene in fruit flies
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/21/2015)... -- According to a new market ... Services), by Applications (Surveillance (Airborne, Maritime, Land), Threat ... & Defense & Commercial) - Global Forecast to ... expected to grow from $7252.0 Million in 2015 ... Annual Growth Rate (CAGR) of 6.6%. ...
(Date:5/20/2015)... 2015 Research ... the addition of the  "5-year Opportunity ... Market"  report to their offering.  ,     ... analyses trends in the iris recognition ... sectors, globally. Despite hardware pricing and ...
(Date:5/19/2015)... , May 18, 2015 Fingerprint Cards ... FPC1020, FPC1025, FPC1145, FPC1155 and FPC1035 from one if its ... until and including Q3 2015 and the sensors will be ... Communicated order values for 2015 hereby amount to 740 MSEK ... 2015 of 140 MSEK and a number of smaller orders ...
Breaking Biology News(10 mins):Thermal Imaging Market Worth $9,998.9 Million by 2020 2Thermal Imaging Market Worth $9,998.9 Million by 2020 3Thermal Imaging Market Worth $9,998.9 Million by 2020 4Global Iris Recognition Market Report 2015 - 5-Year Opportunity Analysis 2Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2
... many serious diseases remain a mystery? In considering that ... School of Medicine has come up with a unified molecular ... may provide an answer. Reviewing findings from multiple ... and Molecular Medicine and Investigator with the Howard Hughes Medical ...
... Ill. (Sept. 3, 2008) Scientists at the U.S. ... an $800,000 EUREKA award from the National Institutes of ... for measuring distances within a protein. ... Medium Angle X-ray solution scattering, would not only dramatically ...
... MADISON, WI, SEPTEMBER 2, 2008 Varying the rate of ... intuitive sense, as farmers have long observed differences in ... The availability of spatial yield information from combines equipped ... improved management. So, optimizing inputs to match ...
Cached Biology News:Do 68 molecules hold the key to understanding disease? 2NIH awards Argonne $800,000 to develop tool to measure distances within proteins 2A little nitrogen can go a long way 2A little nitrogen can go a long way 3
(Date:5/27/2015)... May 27, 2015 Expanding in a ... manufacturer Avalon Biomed Inc. recently inked a ... Mokuda Dental Co. Ltd. , the largest endodontic distributor ... the international market for Avalon Biomed, which manufactures Grey ... tricalcium silicate-based dental cements that have won renown from ...
(Date:5/27/2015)... SAN FRANCISCO, Calif. , May 27, 2015 ... for the treatment of cancer, today announced the ... financial officer and Cynthia Ladd as ... joining CytomX, Goeltz was chief financial officer of ... served as an independent consultant and legal counsel ...
(Date:5/27/2015)... , May 27, 2015  RXi Pharmaceuticals ... focused on discovering and developing innovative therapies primarily ... an update on the status of the Company,s ... Logo - http://photos.prnewswire.com/prnh/20130917/NE80755LOGO ... 3,085 and 21 shares of Series A Preferred ...
(Date:5/26/2015)... WORMS, GERMANY (PRWEB) May 26, 2015 ... W. R. Grace & Co. (NYSE: GRA) announces ... received good manufacturing practice (GMP) certification from EXCiPACTâ„¢, ... distributors of pharmaceutical excipients. , All ... brand of pharmaceutical grade excipient silica gels have ...
Breaking Biology Technology:Dental Manufacturer Avalon Biomed Inks Major Deal with Japanese Distributor 2Dental Manufacturer Avalon Biomed Inks Major Deal with Japanese Distributor 3CytomX Expands Executive Leadership Team 2CytomX Expands Executive Leadership Team 3RXi Pharmaceuticals Provides an Update on Series A and Series A-1 Preferred Stock 2RXi Pharmaceuticals Provides an Update on Series A and Series A-1 Preferred Stock 3CORRECTION: Grace European Facility Receives GMP Excipient Certification for SYLOID® FP Silica Gel 2
... data presented today studied the safety of the ... to patients being evaluated for cardiac transplant.  GeNO ... development-stage technology company, announced that a study of ... (RHC) in subjects being evaluated for Orthotopic Heart ...
... Spain, April 19, 2012 Exciting new ... shows the gut microbiota,s causal role in the development ... of obesity [ 1] . Though an early ... of preventing diabetes and NAFLD with gut microbiota transplantation ...
... The longstanding mystery of how selective hearing works how ... out their crowded, noisy environs is solved this week ... the University of California, San Francisco (UCSF). Psychologists have ... name that evokes the Mad Men era in which it ...
Cached Biology Technology:New Data Shows GeNO LLC Nitric Oxide Delivery System Provided Nitric Oxide With Low Levels of Nitrogen Dioxide for Heart Transplant Patient Evaluation 2New Data Shows GeNO LLC Nitric Oxide Delivery System Provided Nitric Oxide With Low Levels of Nitrogen Dioxide for Heart Transplant Patient Evaluation 3New Data Shows GeNO LLC Nitric Oxide Delivery System Provided Nitric Oxide With Low Levels of Nitrogen Dioxide for Heart Transplant Patient Evaluation 4Gut Microbiota Transplantation may Prevent Development of Diabetes and Fatty Liver Disease 2Gut Microbiota Transplantation may Prevent Development of Diabetes and Fatty Liver Disease 3How selective hearing works in the brain 2How selective hearing works in the brain 3
... (phospho S207) ( Abpromise for ... Antigen: Synthetic phosphopeptide derived from ... of Serine 207 (V-D-S P -V-A). ... 5608 Swiss ...
Rabbit polyclonal to Reptin/TIP49B/RUVB2 ( Abpromise for all tested applications). Antigen: Synthetic peptide (Human) Entrez Gene ID: 10856 Swiss Protein ID: Q6FIB9...
Mouse monoclonal [1Q17] to TGE Virus peplomer ( Abpromise for all tested applications)....
Goat polyclonal to ORC2L ( Abpromise for all tested applications). entrezGeneID: 4999 SwissProtID: Q13416...
Biology Products: