Navigation Links
Early bird doesn't always get worm, UNC researcher finds
Date:3/12/2008

CHAPEL HILL Competing against older brothers and sisters can be tough work, as any youngest child will tell you.

But new research from a biologist at the University of North Carolina at Chapel Hill shows that when it comes to some birds, you should reserve any underdog sympathies for the first born or rather, first laid siblings as well.

The finding, published in the March 12 issue of PLoS ONE, runs somewhat counter to common wisdom, which holds that baby birds that are laid before their brood mates have a better chance of surviving long enough to leave the nest.

But after studying a population of Lincolns sparrows in a remote stretch of Colorados San Juan Mountains, Keith Sockman, an assistant biology professor in UNCs College of Arts and Sciences, has discovered that first-laid eggs are, in fact, the least likely to hatch at all.

I believe this is the first study to follow siblings from laying through fledging and demonstrate that the effect of laying order on hatching is very different from its effect post-hatching, said Sockman.

It is a well-documented fact that being born just a day or so later often sets the stage for a situation whereby youngest hatchlings die. Thats because theyre too small to compete against their feistier brood-mates for the limited resources provided by their parents. Such competitive disparities caused by hatching or birth order can be found in other animals from beetles to marsupials to humans which sometimes produce their young in series, then rear the resulting offspring simultaneously.

But Sockman says up until now, such observations have usually failed to take account of what happens to eggs before they hatch.

Female Lincolns sparrows lay one egg per day, usually producing three to five eggs in total. While carefully observing and tracking the tiny birds for three breeding seasons, Sockman and his team of researchers noticed that typically, mothers do not s
'/>"/>

Contact: Patric Lane
patric_lane@unc.edu
919-962-8596
University of North Carolina at Chapel Hill
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Pot bellies linked to early signs of cardiovascular disease
2. Eye-staining technique offers early detection for dry eye syndrome
3. Early Weight Loss in Women Linked to Dementia
4. Isolation of a new gene family essential for early development
5. U of M study: Early treatment can reverse heart damage
6. Gerresheimer to be Included in the SDAX Early Decision on Inclusion in the MDAX on September 5, 2007
7. Rock N Roll: Sex, Drugs and an Early Exit
8. Pop stars more than twice as likely to die an early death
9. Exercise and yoga improves quality of life in women with early-stage breast cancer
10. Research says doctors gender may hinder early diagnosis of heart disease in women
11. Antidepressant shows early promise in treating agitation and psychotic symptoms of dementia
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/23/2014)... (PRWEB) August 23, 2014 Professional kitchen ... a study aid in preparing for Food Safety Certification ... test by Dynamic Path. , Dynamic Path announced ... which includes more than 200 review questions for culinary ... are designed to cover requirements of the ServSafe® Food ...
(Date:8/23/2014)... 2014 Young adults in Athens, GA who find ... pick up the phone and call the new helpline which can ... . , Troubled Teen Athens is a wonderful resource for ... take the necessary steps to end substance abuse once and for ... go to friends or peers when really they should put their ...
(Date:8/23/2014)... Houston, TX (PRWEB) August 23, 2014 ... state of Texas. It’s no different in Houston, TX. ... Juveniles are falling victim to drug and alcohol dependency ... people are looking to beat substance abuse, but don’t ... a juvenile treatment facility can be a challenge because ...
(Date:8/23/2014)... NC (PRWEB) August 23, 2014 Teen substance ... young people in Holly Springs, NC. Countless adolescents throughout North ... regular basis. Unfortunately, many never receive professional rehab due ... adults on where to get help. Troubled Teens Holly Springs ... the lives of local teenage alcohol abusers in ...
(Date:8/22/2014)... Search Engine Optimization is needed to ... search engines and get more audience and sales. ... many Linux hosting suppliers and announced that HostGator.com ... recommended Linux hosting suppliers for webmasters from the ... high quality Linux hosting (including VPS and cloud ...
Breaking Medicine News(10 mins):Health News:Food Handler Safety Certification Made Easy with Dynamic Path 2Health News:Teenagers in Athens, GA are Locating Addiction Recovery Thanks to New Helpline 2Health News:New Houston Hotline Assisting Juveniles in Locating Dependable Rehabilitation Help 2Health News:New Helpline Provides Teen Drug & Alcohol Recovery Information in Holly Springs, NC 2Health News:Top10BestSEOHosting.com Announces Best Cheap Hosting Suppliers Of This Summer 2
... strike by junior doctors the agitation launched by pro-quota medical ... ,The emergency ward at the Patna Medical College and Hospital ... with the pro-quota medicos continuing their dharna on Monday. The ... for the deadlock. The chief minister has held two rounds ...
... know it, has an expensive price tag attached to it.,Look ... brought,tremendous wealth and opportunity to its people;// but at a ... Americans who are,over-weight or grossly obese. More recently the rapid ... in a similar situation.,India has seen a rise in the ...
... doctors after treating 65 million US citizens with hypertension ... blood pressure to normal range quickly, according to New ... studies since long has shown the advantage of giving ... and Women’s Hospital and Harward Medical School, Boston told ...
... procedure called the Birmingham Hip? Resurfacing System, considered to ... provided by Baylor University// Medical Center, Dallas. This ... unavailable in the U.S. has now been permitted by ... Dallas in North Texas have been taught to carry ...
... an inkling regarding the presence of deep reefs between ... brought out using// the surface-operated dredge and grab sampling ... of the ocean, these crucial areas remained under cover. ... of the National Oceanic and Atmospheric Administrations Ocean Exploration ...
... Department of Veterans Affairs has suggested that pharmacists who ... to inpatients// and health care teams when they come ... the patients. This is also effective in bringing down ... care. ,The change in pharmacists' roles also has ...
Cached Medicine News:Health News:Hospital Services Still Paralysed Inspite Of The Withdrawal Of The Strike 2Health News:The Price Paid for New Lifestyle 2Health News:Combination Drug Therapy For Hypertension 2Health News:Birmingham Hip Resurfacing System, Another Option To Hip Replacement Surgery 2Health News:Recently discovered deep-sea reefs catch the attention of the drug discovery team 2Health News:Recently discovered deep-sea reefs catch the attention of the drug discovery team 3Health News:Hospitalized patients better of with help from Pharmacists 2Health News:Hospitalized patients better of with help from Pharmacists 3
(Date:8/22/2014)... WASHINGTON , Aug. 22, 2014 ... Obamacare that modify the religious "accommodation" but still ... drugs that have an abortifacient effect, including Plan ... "week after pill"). The Obama Administration also announced ... religious, closely held, for-profit corporations. The ...
(Date:8/22/2014)... 2014 /CNW/ - On Aug. 20, at its annual ... Medical Association (CMA) voted on and approved a delegate ... medicinal cannabis. Bedrocan Cannabis Corp., a leading Canadian licensed ... motion. The CMA is quite right to ... smoking any plant material, including medicinal cannabis. While some ...
(Date:8/22/2014)... -- MC Medical, a subsidiary of Mitsubishi Corporation (MCM), and ... medical device company, have formally agreed to an ... system in Japan . It is anticipated ... Japan in the latter half of 2015. ... portfolio in endoscopic surgery market in Japan ...
Breaking Medicine Technology:Liberty Institute: Government "Accommodation" Still Requires Employers To Facilitate Coverage Of Abortifacient Drugs 2Bedrocan Canada Statement Regarding Canadian Medical Association Motion on Smoking Marijuana 2MC Medical agrees to be the exclusive distributor of FloShield products in Japan 2
... GPP Plays Critical Role in Moving HIV Prevention Research Agenda Forward ... VIENNA , July 23 ... Guidelines for Biomedical HIV Prevention Trials were released yesterday at the International ... aim to provide trial funders, sponsors, and implementers with systematic guidance on how ...
... July 22 Poniard Pharmaceuticals, Inc. (Nasdaq: PARD ... received a letter from the Nasdaq Stock Market stating that the ... $1.00 per share for 30 consecutive business days and ... bid price requirement for continued listing set forth in Marketplace Rule ...
Cached Medicine Technology:New Edition of Guidelines for Involving Communities in HIV Prevention Research Released at International AIDS Conference 2Poniard Pharmaceuticals Receives NASDAQ Deficiency Notice Related to Minimum Bid Price 2Poniard Pharmaceuticals Receives NASDAQ Deficiency Notice Related to Minimum Bid Price 3
The ImagingPlanet 55 mm Surgical Microscope Adapter. Superior optical quality and precise engineering make this 55mm focal length adapter an excellent decision for use with your Zeiss surgical micro...
... Capture Archive Manage ... Images. ,Introducing Optronics DVMR- office, ... system designed for the physician's ... from a variety of high-resolution ...
... Optronics QuantiFIRE represents the latest innovation ... scientific grade CCD imaging for microscopy. ... Monochrome CCD camera developed exclusively for ... fluoresence or NIR imaging applications where ...
... This system is the most ... world. Developed in the USA after ... safety, and complete precision with maximum ... exfoliation. It is superior to traditional ...
Medicine Products: