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:4/23/2014)... in the journal Oncotarget , explored tumour ... or their own DNA signatures within the same ... design effective, targeted treatment strategies. , Firstly they ... and either the KRAS or BRAF mutation. Secondly, ... EGFR gene mutation have that specific mutation present ...
(Date:4/23/2014)... bottom of Alzheimer,s disease has been a rapidly ... In the latest crook in the research road, ... interaction between proteins associated with the disease. The ... Chemical Neuroscience , could have important implications for ... Nieznanski and colleagues explain that for years, research ...
(Date:4/22/2014)... A recently FDA-approved device has been shown to reduce ... as 50 percent. When coupled with an innovative electrode ... device facilitated the complete elimination of seizures in nearly ... decade-long clinical trials. , That,s good news for a ... U.S. living with epilepsy whose seizures can,t be controlled ...
(Date:4/22/2014)... 2014 Researchers at UT Southwestern Medical Center are ... depression . , A team of physician-scientists at ... ghrelin (a hormone with natural anti-depressant properties) works inside ... new treatment for depression in the form of a ... study, published online in April,s issue of Molecular ...
(Date:4/22/2014)... April 22, 2014: The Association for Molecular Pathology ... Journal of Molecular Diagnostics on recommendations for ... and master,s levels of education. The report was ... Task Force of the AMP Training and Education ... need of educating future medical laboratory scientists appropriately ...
Breaking Medicine News(10 mins):Health News:Non-uniform genetic mutations identified in lung cancers could lead to targeted treatment 2Health News:Newly approved brain stimulator offers hope for individuals with uncontrolled epilepsy 2Health News:Depressed? Researchers identify new anti-depressant mechanisms, therapeutic approaches 2Health News:Depressed? Researchers identify new anti-depressant mechanisms, therapeutic approaches 3Health News:AMP publishes curriculum recommendations for medical laboratory scientists 2
... , ... firm Jackson & Coker ranked #3 on SIA’s 2009 list of “Ten Best Staffing ... , ... December 11, 2009 -- Each year, Staffing Industry Analysts, a premier research and analysts ...
... The Phoenix Business Journal and BestCompaniesAZ, co-founders ... SCAN Health Plan Arizona has been named to the 2009 ... employees, who provided extensive insight into employee life. , SCAN ... culture and work environment that fosters personal and professional growth ...
... estrogen-positive tumors, study found , THURSDAY, Dec. 10 ... tamoxifen can boost survival in postmenopausal women with ... as estrogen receptor-positive, and it,s best given before ... study. , "Chemotherapy with Adriamycin adds to your ...
... , U.S. Rep. Gerry Connolly (D-Va.) Also to ... 10 The Federal Employees Health Benefits Plan (FEHBP) open enrollment period ... (AFGE) "Inside Government" radio program. The show will air on Friday, ... www.federalnewsradio.com and 1500 AM in the ...
... , DETROIT, Dec. 10 African-American political leaders, ... Monday, December 14th to create and implement a ... African-American Community. , "Detroit is leading the nation ... the Rev. Horace Sheffield III, National Board Member and ...
... to prevent recurrence, researchers find , THURSDAY, Dec. 10 ... millions of women to fight osteoporosis also cut the ... a dual role in keeping women healthy. , ... of breast cancer therapy. Our feeling is that bisphosphonates ...
Cached Medicine News:Health News:Jackson & Coker Ranks #3 among “Ten Best Staffing Firms to Work For” 2Health News:Jackson & Coker Ranks #3 among “Ten Best Staffing Firms to Work For” 3Health News:Jackson & Coker Ranks #3 among “Ten Best Staffing Firms to Work For” 4Health News:SCAN Health Plan Arizona Named one of Area's Best Places to Work by the Phoenix Business Journal and BestCompaniesAZ, LLC 2Health News:Adding Chemo to Tamoxifen Helps Some Breast Cancer Patients 2Health News:Adding Chemo to Tamoxifen Helps Some Breast Cancer Patients 3Health News:FEHBP Open Enrollment Period to be Discussed on Special Rebroadcast of 'Inside Government' 2Health News:Black Community Unites Against HIV/AIDS Epidemic 2Health News:Bone Drugs May Beat Back Breast Cancer 2
(Date:1/15/2014)... 2014 Most osteoporosis patients want a choice in ... survey* sponsored by Mission Pharmacal Company. The survey, conducted ... online support community, revealed that 74 percent of osteoporosis ... a form other than a pill or a tablet. ...
(Date:1/15/2014)... Jan. 15, 2014  Celsion Corporation (the "Company") (NASDAQ: ... from institutional investors to purchase an aggregate of approximately ... at-the-market registered direct offering, led by a dedicated health ... purchase agreements with these investors pursuant to which the ...
(Date:1/15/2014)...  Manufacturers, suppliers and distributors of innovative medical-related products ... most important business assets, intellectual property (IP). ... Because of the highly-competitive nature of the Medical ... most litigious industry sectors of cases involving IP ...
Breaking Medicine Technology:Mission Pharmacal Conducts Online Survey of Osteoporosis Patients 2Mission Pharmacal Conducts Online Survey of Osteoporosis Patients 3Celsion Corporation Announces $15 Million At-The-Market Registered Direct Offering 2Celsion Corporation Announces $15 Million At-The-Market Registered Direct Offering 3Intellectual Property Insurance for Medical-related Products and Services 2
... February 23 BN,ImmunoTherapeutics, Inc. today provided updated ... vaccine, MVA-BN(R)-HER2, in development as,therapy of metastatic breast ... its primary endpoint with regards to safety and ... immune response was,detected in approximately 70% of evaluated ...
... An international team of,researchers has evaluated ... the knee, and the results have been ... journal "Osteoarthritis and Cartilage".,The researchers followed 376 ... treatments. After six months as well as ...
Cached Medicine Technology:BN ImmunoTherapeutics Updates on Phase I/II Studies With Breast Cancer Vaccine 2BN ImmunoTherapeutics Updates on Phase I/II Studies With Breast Cancer Vaccine 3New Treatment Against Osteoarthritis: Orthokine Therapy Highly Effective Against Knee Arthritis After Two Years 2
White Standard Girdle...
Black Spandex Above the Knee Compression Girdles with Contact Closure with Zipper...
Short Girdle, Mid-thigh, Front Closure...
Male Body Shaper, Front Closure...
Medicine Products: