Navigation Links
Female mate choice enhances offspring fitness in an annual herb
Date:6/27/2011

en there was only a few minutes of time lag between their depositions. This was also the case for pollinations that were done with a 24-hour lag between them. However, even in the latter scenario, a surprising proportion of the seeds were still sired by the second donor.

Interestingly, when a mixture of the two donors was applied once, all at the same time, simulating delayed stigma receptivity (because all the pollen start to grow toward the ovules at the same time), there was greater offspring diversity compared to two separate pollination events, one from each donor. In other words, the proportion of offspring sired by each donor was more even in the single pollination event of mixed pollen, rather than being dominated by a single donor.

Moreover, high paternal diversity was also associated with increased seed production, indicating a fitness advantage to delaying stigma receptivity.

"Our results indicate that in our study species the ability to enhance pollen competition between competing mates by delaying stigma receptivity is beneficial because it increases paternal diversity of the brood, which in turn is positively connected to number of seeds produced," Lankinen said. "Even though many studies have shown that enhanced pollen competition can be beneficial for the female reproductive function, the underlying reason for this association is not clear."

Given the benefit of delaying stigma receptivity, Lankinen notes that she and her colleagues "are puzzled by the fact that variation in timing of stigma receptivity is very large in wild populations," and concludes that it would be of interest to understand more about this trait under natural conditions.

Of additional interest is the potential occurrence of a sexual conflict over timing of stigma receptivity. "We have detected that some pollen donors can fertilize ovules ahead of others, presumably securing paternity by avoiding competition with later arrivi
'/>"/>

Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert  

Page: 1 2 3

Related medicine news :

1. Has Chinas campaign against female feticide done more harm than good?
2. Undernourishment in pregnant, lactating females found key to next generations disease
3. Supplement found to improve quality of life for female cancer survivors
4. Young females are victims of violent injury
5. Research study reveals profile for female drunk-drivers
6. Gene Variation May Explain Some Female Infertility Cases
7. How materialistic advertising messages negatively shape the female body image
8. UNC study finds oral tongue cancer increasing in young, white females
9. Study: Facebook photo sharing reflects focus on female appearance
10. New educational DVD improves female pelvic exam instruction
11. Biological clock ticks slower for female birds who choose good mates
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Female mate choice enhances offspring fitness in an annual herb
(Date:7/29/2014)... This Latest Guidebook for Conducting Pharma Clinical Trials ... only provided a comprehensive and thorough knowledge of the ... registration but also introduced the practical operation how to ... use the Chinese trial venues to keep drug development ... step. , The audiences of this guidebook are overseas ...
(Date:7/29/2014)... controversy over how best to treat patients after they,ve ... until the cancer comes back or provide men with ... a new study from Thomas Jefferson University ... patients make a more informed decision. , "We are ... author Robert Den, M.D., Assistant Professor of Radiation Oncology ...
(Date:7/29/2014)... principle suitable to find out which preferences patients have ... health economic evaluations, some (primarily methodological) issues still need ... pilot project by the German Institute for Quality and ... Process (AHP), CA is the second method tested by ... outcome-specific results to an overall value , In ...
(Date:7/29/2014)... repeatedly shown that death rates rise in association with ... in the summer of 2003, for example, resulted in ... by Dr. Alex-andra Schneider at the Institute of Epidemiology ... of extreme temperatures on the number of deaths caused ... both high and low temperatures in the study. , ...
(Date:7/29/2014)... stressful situations better than others, and it,s not ... differences in how they respond. , Researchers have ... of genetically identical mice that predicts how well ... , The findings, published July 29 in ... potential consequences of chronic stress -- such as ...
Breaking Medicine News(10 mins):Health News:Pharma Clinical Trials Market in China: Authorities for Drug New Study Now Available at MarketReportsOnline.com 2Health News:Pharma Clinical Trials Market in China: Authorities for Drug New Study Now Available at MarketReportsOnline.com 3Health News:Pharma Clinical Trials Market in China: Authorities for Drug New Study Now Available at MarketReportsOnline.com 4Health News:Genomic analysis of prostate cancer indicates best course of action after surgery 2Health News:Determine patient preferences by means of conjoint analysis 2Health News:Determine patient preferences by means of conjoint analysis 3Health News:Determine patient preferences by means of conjoint analysis 4Health News:Mortality rates increase due to extreme heat and cold 2Health News:A new brain-based marker of stress susceptibility 2
... 26 Concentric Medical, Inc., the global leader in ... announced that the company,s Merci Retrieval System(TM) has been ... August 2004. The Merci Retrieval System is a ... remove blood clots from patients suffering an ischemic stroke. ...
... Group at Frost & Sullivan is ... Presentation on the European Orphan Diseases Market to ... 2 p.m. GMT.(Logo: http://www.newscom.com/cgi-bin/prnh/20081117/FSLOGO )Today,s pharmaceutical companies ... market because of the patent expiry of blockbuster ...
... of advanced health screening solutions in local communities, announces the deployment ... make the investment in the new unit in response to increased ... to increased capacity requirements related to the company,s planned geographical expansion ... ...
... Inc. anticipates growth and expansion of telemedicine services to include ... mental health centers. , ... N. ... continues to advance, regulations pertaining to hospital and physician reimbursement ...
... tumor characteristics that may help indicate which breast cancer patients ... to remove the unaffected breast. Published in the March ... of the American Cancer Society, the study could help patients ... diagnosed with breast cancer are known to be at increased ...
... procedure to remove the unaffected breast in breast cancer patients ... patients who have high-risk features as assessed by examining the ... to researchers at The University of Texas M. D. Anderson ... 1, 2009 issue of Cancer , may help physicians ...
Cached Medicine News:Health News:Concentric Medical Reaches Important Stroke Milestone 2Health News:Concentric Medical Reaches Important Stroke Milestone 3Health News:Frost & Sullivan to Host Analyst Briefing on the European Orphan Diseases Market: Niche-Busters - An Attractive Future? 2Health News:HealthYes! Announces Deployment of a New Mobile Health Screening Unit 2Health News:HealthYes! Announces Deployment of a New Mobile Health Screening Unit 3Health News:A Newly Approved CMS Medicare Package Expands Reimbursement Coverage for Telehealth Originating Sites Beginning January 1, 2009 2Health News:Study examines risk factors for cancer in unaffected breast of breast cancer patients 2Health News:Researchers identify risk factors for contralateral breast cancer 2
(Date:7/29/2014)... LONDON , July 29, 2014 ... 2014 Global Frost & Sullivan Best Practices Award ... solution is a cloud-based platform that connects digital ... - such as providers, pharmaceutical companies, prevention and ... electronics. Each year, Frost & ...
(Date:7/29/2014)... , July 29, 2014   Health 2.0 ... a keynote alongside visionary physicians Eric Topol , ... at the Health 2.0 8th Annual Fall Conference ... This year, Health 2.0 is set to host ... of the larger session on Consumer Tech & Wearables: ...
(Date:7/28/2014)... Pharmacyclics, Inc. (the "Company") (Nasdaq: PCYC ) today ... webcast to discuss financial results for the second quarter of ... 2014 at 4:30 p.m. ET. Conference call ... 2014 Time: 4:30 PM ET Listen via Internet: http://ir.pharmacyclics.com/events.cfm ... A webcast replay will be available on the Pharmacyclics website ...
Breaking Medicine Technology:Frost & Sullivan Commends Validic for Delivering Superior Customer Value through its mHealth Interoperability Technology Platform 2Frost & Sullivan Commends Validic for Delivering Superior Customer Value through its mHealth Interoperability Technology Platform 3Frost & Sullivan Commends Validic for Delivering Superior Customer Value through its mHealth Interoperability Technology Platform 4Kaiser Permanente CEO to Keynote Health 2.0 8th Annual Fall Conference 2Kaiser Permanente CEO to Keynote Health 2.0 8th Annual Fall Conference 3Pharmacyclics Announces Date of Conference call to discuss Financial Results for Second Quarter of 2014 2
... Inc. (OTC Bulletin Board: WGBS ), a leading developer ... an overview of the company at the 13th annual BIO CEO ... Hotel, Tuesday, February 15, 2011 at 11:30 a.m. Eastern time.  The ... may be accessed at www.wafergen.com . The BIO ...
... Caliper Life Sciences, Inc. (Nasdaq: CALP ) ... protocols on its Sciclone® NGS Workstation for Illumina,s TruSeq™ ... In addition to the automation protocols for TruSeq kits, ... library preparation kits, as well as for Agilent,s SureSelect™ ...
Cached Medicine Technology:WaferGen to Present at 13th Annual BIO CEO and Investor Conference 2Caliper Life Sciences Announces Availability of Automated TruSeq™ Next Generation Sequencing Protocols 2
... eyewear and sunwear, inspired by ... personal style, with long lasting ... the collection include sophistication, elegance ... offer clean modern shapes, classic ...
... designs with children in mind, making eyewear ... stay-put cable temples. Its not surprising that ... as the best selling childrens collection from ... popular is its ability to keep pace ...
... The Calvin Klein Collection. Provocatively inspired ... - a bold outlook. Innovative structure: ... Modern technology enhances modern design. Technological ... and enhance the face., ,The Calvin ...
Inquire...
Medicine Products: