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:7/10/2014)... 2014  Unisys Corporation,s (NYSE: UIS ) subsidiary ... today announced that it has been selected by the Dutch ... new Basic Provision Biometrics solution for penitentiaries across ... contract with a solution based on its open standards-based ... the contract is up to seven years, with the new ...
(Date:7/10/2014)... 2014 According to the new ... And Area), Material (Optical Prism, Pizeoelectric, Capacitive, and Adhesives), ... Banking & Finance), and Geography - Global Trends & ... global Fingerprint Sensors Market is projected to cross $14.35 ... 16.8% from 2014 to 2020. Browse more ...
(Date:7/10/2014)... According to a new market ... Systems Market Global Forecast, Market Share, Size, Growth and ... Control systems market was valued at USD 15,406.1 million ... CAGR of 12.6% from 2014 to 2019, to reach ... Browse the full Electronic Access Control Systems ...
Breaking Biology News(10 mins):Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3Fingerprint Sensors Market worth $14.35 Billion by 2020 2Fingerprint Sensors Market worth $14.35 Billion by 2020 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 5
... at The University of Nottingham say adverse side-effects caused by ... be controlled by what we eat. The research, carried ... UK and Malaysia, indicates that natural variation in our levels ... how we respond to quinine treatment. It appears that the ...
... $55.5 million to university consortia to establish three ... interdisciplinary nanosystems research and education in partnership with ... Nanosystems ERCs, or NERCS, will advance knowledge and ... as the human health and environmental implications of ...
... and it,ll remember you for years. Crows and humans share ... as well as positive, feelings. The way the brain activates ... to share, according to new research being published this week. ... not unlike those that work together in mammals, including humans," ...
Cached Biology News:Diet could combat adverse side-effects of quinine 2Diet could combat adverse side-effects of quinine 3Engineering research centers awarded $55.5 million to innovate in nanoscale science and engineering 2Engineering research centers awarded $55.5 million to innovate in nanoscale science and engineering 3Crows react to threats in human-like way 2Crows react to threats in human-like way 3
(Date:7/10/2014)... CA (PRWEB) July 10, 2014 Senior ... institutions and professional associations, addressed the challenges of “Reducing ... Medical Device Industries” through strategic sourcing. Describing the partnership ... with the Supply Chain Management Institute ( SCMI) ... event on June 24 at the Kroc Institute of ...
(Date:7/10/2014)... , July 10, 2014 On ... Dmitry Medvedev , presented Russia,s ... BIOCAD . The Company is developing a unique project ... project BIOCAD develops a number of innovative drugs based ... diseases. The ceremony took place at the International Exhibition ...
(Date:7/10/2014)... 10, 2014 /PRNewswire-iReach/ -- Tute Genomics, the ... announced an agreement with Lineagen, Inc., to ... NextStep Dx PLUS.  Lineagen, focused on ... disorders, currently offers FirstStep Dx PLUS, ... used by healthcare providers as a first-line ...
(Date:7/10/2014)... 10, 2014   Ceres, Inc . (Nasdaq: ... announced today financial results for the three months ended ... business. Ceres reported that the company and ... this growing season in Brazil, which concluded in June, ... sorghum evaluation areas for part of the growing season. ...
Breaking Biology Technology:Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 3Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9
... at getting a second-rate solution for something as critical as ... in almost every other product and service arena. , ,Speed ... services as the general metric for assessing whether or not ... Speed is good , ,To paraphrase Gordon Gekko's ...
... TomoTherapy executives have talked about their ... are bearing fruit. , ,The Madison-based medical technology ... Kirloskar Theratronics, Ltd . to distribute ... countries. KTPL, part of the Kirloskar Group, provides ...
... job is becoming more and more a rare option rather ... I'm still getting feedback about people giving two-weeks' notice and ... two-week notices no longer are part of the standard practice. ... for! , ,One reader said you should give a two-week ...
Cached Biology Technology:Damn the incumbents, and full speed ahead 2Damn the incumbents, and full speed ahead 3Damn the incumbents, and full speed ahead 4Two-week notices: People are still concerned 2Two-week notices: People are still concerned 3Two-week notices: People are still concerned 4Two-week notices: People are still concerned 5
quantitation of phosphatase activity, evaluation of hits and leads from HTS...
... ISO 9001:2000 Certified USDA Research Registered ... SOP's Training AALAS Certified Technicians ... Procedures GLP Documentation Upon Request Focus ... point for all your custom immunology service ...
Request Info...
Request Info...
Biology Products: