Navigation Links
To the Antarctic or Brazil for new feathers

According to the researchers, 90 percent of the thin-billed prions visit the Antarctic waters. Most of them remain there for the entire moulting period from April to the end of June. Individual birds moult, however, further north, offshore of South America. Despite having these different destinations, the two populations are not genetically separate groups. The scientists succeeded in ringing individual prions during their breeding sojourns and then traced them over a period of several years. The ringed birds tended to show a preference for the area to which they had flown the previous year; however, there were individuals among them that moulted in the other area. Furthermore, one of the study birds started moult in the Antarctic, but later moved further north. "The results show that not only the entire species but also individual thin-billed prions are extremely flexible in their behaviour. This enables them to survive the winter in vast ocean areas with often unpredictable weather conditions and oceanographic cycles in order to renew their plumage and build up fat reserves for the following breeding season," explains Petra Quillfeldt.

The results of the study were obtained with the help of the analysis of carbon and nitrogen atoms of varying weights found in the birds' feathers. The researchers removed one small feather from breeding birds on the Falkland Islands in the South West Atlantic. They also collected the wings of thin-billed prions that had fallen prey to skuas. Small samples of these feathers were then tested for their stable carbon and nitrogen isotope content at the Leibniz Institute for Zoo and Wildlife Research in Berlin; a highly sensitive mass spectrometer was used for this purpose. The heavy carbon isotope 13C is not evenly distributed in the ocean. Its frequency in algae, which form the basis of the oceanic food web, declines with sinking sea temperatures. Therefore, birds in the Antarctic Ocean food web have lower 13C values

Contact: Petra Quillfeldt

Page: 1 2 3

Related biology news :

1. Scientists locate apparent hydrothermal vents off Antarctica
2. CCNY professor foresees rising Antarctic snowmelt
3. First comprehensive review of the state of Antarcticas climate
4. LSU gets to the bottom of things -- in Antarctica
5. Antarctica glacier retreat creates new carbon dioxide store
6. Algae and pollen grains provide evidence of remarkably warm period in Antarcticas history
7. Unlikely life thriving at Antarcticas Blood Falls
8. Ancient ecosystem thrives millions of years below Antarctic glacier
9. UK robot sub searches for signs of melting 60 km into an Antarctic ice shelf cavity
10. Final frontier: Mission to explore buried ancient Antarctic lake given green light
11. CO2 drop and global cooling caused Antarctic glacier to form
Post Your Comments:
(Date:9/28/2015)... September 28, 2015 According to ... & Software), Product (Scanner & Others), Application (Access Control ... & Others) & Geography Global - Forecast to 2020", published ... reach USD 3627.90 Million by 2020, at a CAGR ... Browse 65 market data T ables and ...
(Date:9/26/2015)...  Results of a TactioRPM pilot project in ... the Stanford Medicine X Conference. In a presentation ... Health Devices and Pharmacogenomics", Roger Simard , ... how senior patients equipped with connected health devices ... the TactioRPM remote patient monitoring platform were empowered ...
(Date:9/24/2015)... , September 24, 2015 ... september 2015 Kerv ( ... finanstjänster, lanserar idag världens första kontaktlösa betalningsring ... in 77 000 GBP för massproduktion via ... ) , Kerv-bärare kan ...
Breaking Biology News(10 mins):
... part in the National Science Foundation,s (NSF) Faculty ... additional distinction as winners of Presidential Early Career ... 2006 competition. The PECASE program recognizes outstanding ... show exceptional potential for leadership at the frontiers ...
... wildfires can contribute as much as vehicles to carbon ... highly variable. New research published in the online open ... and suggests fires will complicate emissions monitoring and modelling ... Atmospheric Research and Jason Neff of the University of ...
... State University have designed a revolutionary laser technique which ... damaging human cells and may also help reduce the ... The research, published on Thursday November 1 in ... discusses how pulses from an infrared laser can be ...
Cached Biology News:
(Date:10/8/2015)... -- Celemics, a global pioneer of personalized medicine genetics, ... with the establishment of Celemics America, Inc. ... , has secured itself in the global market ... preparation for DNA sequencing and genetic testing.  Next Generation ... testing more accurately, quickly, and cost effectively than traditional ...
(Date:10/8/2015)... 2015 The 2015 Nobel Prize in Chemistry ... at Dallas. Aziz Sancar , who earned his PhD ... in 1977, is one of three scientists who received the ... repair damaged DNA on a molecular level.  --> Aziz ... from UT Dallas in 1977, is one ...
(Date:10/8/2015)... /PRNewswire/ - RepliCel Life Sciences Inc. (OTCQB: REPCF) (TSX.V: RP), ... development of autologous cell therapies, today announced its schedule of ... in the month of October: Stem Cell ... will be presenting at the annual Partnering Forum, part ... be held October 7-9 in La Jolla, ...
(Date:10/8/2015)... ... 2015 , ... Talon Innovations, a provider of Precision Machined Products ... it is one of three finalists for the Minnesota Business magazine’s Manufacturing Award in ... Talon Innovations was recognized as a nominee for this competitive award. , The ...
Breaking Biology Technology:
... DUBLIN , June 17, 2010 An ... hour blood,pressure is more accurate and consistent than a leading group of,international ... ... the study,analysed the interpretation of numerous blood pressure readings taken over a,24-hour ...
... becoming increasingly flatter - some have even become almost as ... dimensions, much to the delight of home cinema fans. Cellphones ... All of these developments owe their thanks to miniature light-emitting ... multitude of devices. However, LED technology does have a ...
... ... an occlusion-induced IR injury model enabling the ability to study the functional relevance of ... which the drug promotes myocardial protection. , ... (PRWEB) June 16, 2010 -- MD Biosciences , a ...
Cached Biology Technology: