Navigation Links
New evidence for female control in reproduction
Date:11/19/2007

WASHINGTON, D.C. Adding another layer of competition to the mating game, scientists are reporting possible biochemical proof that the reproductive system of female mammals can sense the presence of sperm and react to it by changing the uterine environment. This may be the molecular mechanism behind post-copulatory sexual selection, in which females that have mated with several partners play a role in determining which sperm fertilizes their egg.

Lead author Alireza Fazeli says that the deep new molecular insights into this post-coital ladies choice has profound implications for in-vitro fertilization (IVF), cloning, and animal breeding. It is also a windfall for evolutionary biology, providing a possible explanation for female promiscuity in the animal kingdom, he adds.

In a first-of-its-kind study scheduled for ACS Journal of Proteome Research, Fazelis international scientific team reports the first chemical evidence of a sperm recognition system in the oviducts of pigs standard animals for such research because their reproductive systems are similar to humans.

In the traditional view, competition for the egg is male-oriented, with sperm themselves deciding which fertilizes the egg by being the faster swimmer. With post-copulatory sexual selection, the female is in control, her oviducts selecting the winner the best quality sperm from the healthiest male and rejecting the rest.

This study clearly shows that the sperms arrival in the female reproductive tract triggers a cascade of changes that leads to alteration of protein production in the oviduct and a change in the oviductal environment. We speculate that this is mainly done to prepare oviduct environment for storing sperm, fertilization and early embryonic development, Fazeli said. However this can also be used as a detection and selection system that alerts females to the presence of different kinds of sperm and then triggers mechanisms in the oviducts that control
'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-4400
American Chemical Society
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. A private bandwidth for communication in bats: Evidence from insular horseshoe bats
2. Comet probes reveal evidence of origin of life, scientists claim
3. Evidence of a relationship between swimming babies and infections
4. Researchers find evidence linking stress caused by the Sept. 11 disaster with low birth weights
5. Fossil record supports evidence of impending mass extinction
6. Sex is thirst-quenching for female beetles
7. UT Southwestern researchers identify hundreds of genes controlling female fertility
8. Why do males and females frequently differ in body size and structure?
9. X-effect: female chromosome confirmed a prime driver of speciation
10. Vaginal reconstruction not needed for most inter-sex females, Hopkins study shows
11. Gene in male fish lures females into sex
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... tea polyphenols are strong antioxidants and can ... spinal cord neurons against oxidative stress? Jianbo ... Hospital of Liaoning Medical University, China discovered ... stress and inhibit neuronal apoptosis, indicating green ... spinal cord neurons under oxidative stress. The ...
(Date:8/22/2014)... American consumers will finally be able to purchase fuel ... as zero-emissions vehicles, most of the cars will run ... that contributes to global warming. , Now scientists at ... uses an ordinary AAA battery to produce hydrogen by ... through two electrodes that split liquid water into hydrogen ...
(Date:8/21/2014)... Ga. An international team of scientists including researchers from ... Brassica napus commonly known as canolain the journal Science ... the plant, which is used widely in farming and industry. ... its native Europe, but the winter crop is increasingly cultivated ... its naturally low levels of saturated fat and rich supply ...
Breaking Biology News(10 mins):Stanford scientists develop a water splitter that runs on an ordinary AAA battery 2Stanford scientists develop a water splitter that runs on an ordinary AAA battery 3Canola genome sequence reveals evolutionary 'love triangle' 2
... HUNTSVILLE, TX (Feb. 21, 2012)-- An assistant ... Criminal Justice is working to unlock the mysteries ... play on criminal and antisocial behavior. "Biosocial ... behavior," said Dr. Brian Boutwell. "It involves aspects ...
... 2012A team of researchers has found a way to ... to be available, despite the potential attack of Xylella ... poses a significant threat to the California wine industry,s ... Laboratory (LANL), University of California at Davis (UCD), and ...
... prospective study of ethnic differences in the symptoms of ... background have more delayed language, communication and gross motor ... the Kennedy Krieger Institute concluded that subtle developmental delays ... severe symptoms develop. While the prevalence of autism ...
Cached Biology News:Are there biosocial origins for antisocial behavior? 2More grapes, less wrath: Hybrid antimicrobial protein protects grapevines from pathogen 2New study shows minority toddlers with autism are more delayed than affected Caucasian peers 2New study shows minority toddlers with autism are more delayed than affected Caucasian peers 3
(Date:8/21/2014)... N.Y. , Aug. 21, 2014  BioSpecifics ... biopharmaceutical company developing first in class collagenase-based products ... or CCH) in the U.S. and XIAPEX ® ... significant results from a randomized, double-blind Phase 2a ... cellulite, or edematous fibrosclerotic panniculopathy. The results showed ...
(Date:8/21/2014)... Texas (PRWEB) August 21, 2014 ... Seaweed Fertilizer Industry” is a professional and ... market. The report provides basic Seaweed Fertilizer ... and industry chain structure as well as ... market analysis, including domestic market as well ...
(Date:8/21/2014)... Rochelle, N.Y. (PRWEB) August 21, 2014 ... is the first private college in the Mid-Hudson Region ... College will now begin accepting applications from qualified “high-technology” ... , “We are very pleased to have been selected ... support Governor Cuomo’s transformative initiative to stimulate economic development ...
(Date:8/21/2014)... , Aug. 21, 2014  China Cord Blood Corporation ... its plan to release financial results for the first ... 2014, after market close in the US.  ... 8:00 a.m. ET on Friday, August 29, 2014 to ... of the Company,s recent developments, followed by a question ...
Breaking Biology Technology:BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 3BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 4BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 5Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 2Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 3The College of New Rochelle Becomes First Private College in Mid-Hudson Region to Earn START-UP NY Designation 2The College of New Rochelle Becomes First Private College in Mid-Hudson Region to Earn START-UP NY Designation 3China Cord Blood Corporation to Report First Quarter of Fiscal 2015 Financial Results 2
... Combination of Panzem(R) NCD and Avastin(R) May ... 28 EntreMed, Inc.,(Nasdaq: ENMD ), ... treatment of cancer and inflammatory diseases, today,announced ... Phase 2 multi-center,study combining Panzem(R) NCD with ...
... PARIS, January 28 Sanofi-aventis announced,today that ... approved for marketing in Japan by the ... prevention of venous thromboembolism (VTE) in patients,undergoing ... as total hip,replacement, total knee replacement and ...
... Inc.,(NYSE: FRX ), Forest Laboratories Holdings, Ltd., ... GmbH announced that they have filed a second,lawsuit ... of Delaware against,additional companies for infringement of U.S. ... Forest,s Namenda(R) product. The defendants,named in the lawsuit ...
Cached Biology Technology:EntreMed Presents Interim Results for Phase 2 Carcinoid Tumor Study 2EntreMed Presents Interim Results for Phase 2 Carcinoid Tumor Study 3EntreMed Presents Interim Results for Phase 2 Carcinoid Tumor Study 4Clexane(R)/Lovenox(R) Approved in Japan 2Clexane(R)/Lovenox(R) Approved in Japan 3Clexane(R)/Lovenox(R) Approved in Japan 4Clexane(R)/Lovenox(R) Approved in Japan 5Forest Laboratories, Inc. and Merz Pharma GmbH & Co. KgaA File Additional Lawsuit Against Several Companies for Patent Infringement 2
... Tissue Array (MSTA) slides were designed to study ... from multiple species. Tissue slices from three ... which can then be treated as a single ... in situ hybridization. This format allows ...
... Clear yellow solution. In ... thimerosal, and other proprietary ... Diluent formulated to stabilize ... antibody conjugates at high ...
... used to predict the melting ... up to 3,200 bases, which ... primers and GC clamps for ... gel electrophoresis (DGGE), constant denaturing ...
... Mini-Sub cell GT cell and PowerPac basic power ... of nucleic acids in agarose gels. The Mini-Sub ... with cables and electrodes, a 7 x 7 ... casting gates, and two 1.5 mm fixed-height combs ...
Biology Products: