Navigation Links
Study points to role of antioxidant balance in bird health and reproduction
Date:2/25/2010

s that McGraw and his colleagues studied are carotenoids plant compounds like lutein and beta-carotene found in fruits and vegetables. These compounds often are sold as human nutrition supplements.

In a variety of animals, these carotenoids can have potent free-radical-quenching and immune-boosting activity. "Whether the stud birds are acquiring more carotenoids from food or having to use less to keep their bodies healthy, they're clearly successful at keeping levels high while out-reproducing their competitors."

While several other studies have examined how carotenoid levels in animals are linked to health and other aspects of fitness at single points in time, the new study is the first to consider how an individual's temporal change in carotenoid levels is associated with its evolutionary fitness.

Conventional wisdom, McGraw explained, is that vigorous activities such as migrating thousands of miles, courtship, nesting and reproduction should deteriorate the physiological state of animals like swallows.

"Among a variety of animals, reproduction can compromise health and decreased health can inhibit reproduction," McGraw said. "But here we show that, among the best barn swallows, they're able to both keep carotenoid levels high and breed the most. Thus, we don't find clear support for a health/reproduction trade-off among wild animals."

CU's Safran and her team, which included dozens of CU students and volunteers, trapped scores of barn swallows with mist nets in rural sites around Boulder County, Colo., measuring and weighing them and taking blood and feather samples before releasing them back into the wild. Each bird was sampled between two and four times over the breeding season. Blood analysis work was done in McGraw's lab at ASU.

Three carotenoids were measured by McGraw lutein, zeaxanthin, and beta-cryptoxanthin all of which are sold in health food stores around the world. The swallows acquire caroten
'/>"/>

Contact: Skip Derra
skip.derra@asu.edu
480-965-4823
Arizona State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/28/2014)... rat brain cells suggests that the effects of a ... cells are temporary. , The study, published in this ... was conducted by biologists at the University of California, ... York in response to concerns, arising from multiple studies ... to general anesthetics may increase their susceptibility to long-term ...
(Date:7/28/2014)... identified areas of the Earth that are high priorities ... Europe is particularly vulnerable, as it has the lowest ... of any continent in ,refugia, areas of biological ... remain relatively constant during times of great environmental change. ... in Scandinavia and Scotland. , The biggest refugia ...
(Date:7/28/2014)... advance the genetic engineering of "fuel" crops for ... by researchers with the U.S. Department of Energy ... led by Lawrence Berkeley National Laboratory (Berkeley Lab). ... enables scientists to identify and characterize the function ... biosynthesis of plant cell walls. , "Our unique ...
Breaking Biology News(10 mins):Study suggests disruptive effects of anesthesia on brain cell connections are temporary 2Study suggests disruptive effects of anesthesia on brain cell connections are temporary 3Study finds Europe's habitat and wildlife is vulnerable to climate change 2How sweet it is 2How sweet it is 3
... , ASHEVILLE, NC A recent analysis of two ... (FIA) data shows the live volume of hemlocks in ... of hemlock woolly adelgid. FIA scientists from the Forest ... (NRS) published the information as an SRS e-Science Update ...
... laboratory mice have been widely used in research aimed at ... variations in past gene sequences of mice were unknown. While ... was in a certain region, they couldn,t pinpoint the exact ... new research recently published in the journal Nature , ...
... 2011Magnetic resonance tractography (MRT) is a valuable, noninvasive ... as MRT methods and technologies advance, has the ... brain activity and connectivity. Critical information about the ... in a forward-looking review article in the groundbreaking ...
Cached Biology News:Hemlocks still abundant despite adelgid infestations 2UCLA Engineering researchers help develop complete map of mouse genetic variation 2
(Date:7/28/2014)... DUBLIN , July 28, 2014 Research ... "Global Particle Size Analysis Market 2014-2018" report to their ... Particle size analysis is a technique used to determine ... powder or liquid. It is crucial to analyze the size ... material. Therefore, particle size analysis is performed to determine the ...
(Date:7/26/2014)... NY (PRWEB) July 26, 2014 ... provides key market data on the Canada Endoscopy ... millions of US dollars, volume (in units) and ... - High-End Endoscopy Visualization Systems, Mid-Range Endoscopy Visualization ... Full Report at http://www.marketresearchreports.biz/analysis/213254 . , The ...
(Date:7/25/2014)... Amgen (NASDAQ: AMGN ) announced ... per share dividend for the third quarter of 2014. ... to all stockholders of record as of the close ... About Amgen Amgen is committed to unlocking the potential ... discovering, developing, manufacturing and delivering innovative human therapeutics. This ...
(Date:7/25/2014)... new study by researchers from the University of ... nanosystems function, unlocking the potential to create new ... which has been published in the prestigious academic ... novel laser technique to examine in rich detail ... small cluster containing an acetylene molecule and a ...
Breaking Biology Technology:Global Particle Size Analysis Market 2014-2018 2Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 2Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 3Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 4Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 5Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3
... Pharmaceuticals, a,division of Wyeth (NYSE: WYE ... for XYNTHA(TM) Antihemophilic Factor (Recombinant),Plasma/Albumin-Free, a new ... and prevention of bleeding episodes and surgical ... inherited blood-clotting disorder., XYNTHA is produced ...
... Inc.,("Oncolytics") (TSX:ONC, NASDAQ:ONCY) announced today that that it ... trial using intravenous,administration of REOLYSIN(R) in combination with ... neck cancers. The Principal,Investigator is Dr. Monica Mita ... The University of Texas Health Science Center at ...
... Senior-friendly ,PlanPrescriber, Software Simplifies Medicare - For Free, ... today,announced the latest release of their PlanPrescriber tool. ... worry about whether they are,getting the most out ... MIT Professor Glen Urban, provides users with easy ...
Cached Biology Technology:New Recombinant XYNTHA Now Available for Patients with Hemophilia A 2New Recombinant XYNTHA Now Available for Patients with Hemophilia A 3New Recombinant XYNTHA Now Available for Patients with Hemophilia A 4New Recombinant XYNTHA Now Available for Patients with Hemophilia A 5Oncolytics Biotech Inc. Starts Patient Enrolment in U.S. Phase 2 Clinical Trial Investigating REOLYSIN(R) in Combination with Paclitaxel and Carboplatin 2Oncolytics Biotech Inc. Starts Patient Enrolment in U.S. Phase 2 Clinical Trial Investigating REOLYSIN(R) in Combination with Paclitaxel and Carboplatin 3On-Line Medicare Advisor Saves Seniors Time, Hassle and Money 2
... Dithiothreitol DTT White solid.. ... disulfides to thiols, so reaction is "driven" to ... not contain waxy surfactant found in many other ... pentobarbitol. Purity: ≥97% by titration. ...
... This kit is designed for easy transformation ... protocol allows for successful transformation simply by ... reagents with cultured yeast cells. No complicated ... are required. The kit is particularly well ...
... for easy transformation of the budding yeast, ... transformation simply by mixing a plasmid DNA ... cells. No complicated steps, such as centrifugation ... is particularly well suited for high-throughput transformation ...
... pro balance increases your lab productivity and allows ... and regulatory compliance. Move ahead beyond traditional paper-based ... data system. *Instruments supported: ... MX, UMX, AG, XS, XP, PR, SR, PG-S, ...
Biology Products: