Navigation Links
Study looks at mitochondrial variation in sperm traits and sperm competitive ability
Date:9/19/2007

RENO, Nev. -- University of Nevada, Reno researchers Jeanne and David Zeh of the Department of Biology have received a five-year, $650,000 grant from the National Science Foundation to investigate the effects of natural mitochondrial variation on sperm traits and sperm competitive ability.

Researchers have found mitochondrial mutations to be one of the primary causes of low sperm count and poor sperm mobility in humans. However, in the field of sexual selection, where maternal inheritance of mitochondria may well have its greatest impact, female-limited response to selection has been largely overlooked. The Zehs study promises to fill in some of this knowledge gap in evaluating the importance of maternal inheritance of mitochondria for sexual selection and male adaptation. Mitochondria are the principal energy source of a cell, and convert nutrients into energy as well as performing many other specialized tasks.

The Zehs study, which will use a neotropical pseudooscorpion Cordylochernes scorpioides as a model system, will encompass whole-genome mitochondrial sequencing, a comprehensive analysis of the physiological and morphological characteristics of sperm that are likely to be important in competitive ability, a large-scale sperm competition experiment designed to identify the target of selection acting on sperm traits, and a replicated, multi-generation experiment in which the evolutionary response to selection on the trait most important in sperm competition will be assessed using both maternally- and paternally-based selection regimes.

Jeanne Zeh, an assistant professor of biology, and David Zeh, an associate professor of biology, both believe that their study will help refine the efforts to understand mitochondrial effects on male fertility.

The fundamental insight that strict maternal inheritance of mitochondria constrains the ability of males to respond adaptively to selection has led to major advances in the stu
'/>"/>

Contact: John Trent
jtrent@unr.edu
775-784-4959
University of Nevada, Reno
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Rural Canadians travel far for specialists: study
2. A new study surpasses Gene Therapy Hurdle
3. Tomato Sauce reduces Cancer Risk- Study
4. A question on study of Adult Stem Cell
5. Study on obesity and heart failure
6. National Lung Study in the process
7. Marijuana gateway theory strengthened by study of twins
8. Old theory of adaptation confirmed by new study
9. Study casts doubt on keyboard ills
10. Gene study links endometriosis, infertility
11. Study reveals how stress can make you sick
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... Mellon University, working with high-throughput data generated by ... have devised a computational method to determine how ... turn malignant and as they respond to potential ... genes interact with each other in laboratory-grown cells ... the online journal PLOS Computational Biology . ...
(Date:7/24/2014)... Denver, CO (PRWEB) July 24, 2014 In ... the United States has officially put an end to criminal ... legislation marks a new era for marijuana reform in Washington ... in America. The new law replaces criminal penalties for possession ... fine. Growing, selling and the possession of more than an ...
(Date:7/24/2014)... from Penn Medicine shows that incisionless transcatheter aortic ... stay by 30 percent and has no impact ... conventional transfemoral TAVR, which requires an incision in ... the current issue of Circulation: Cardiovascular Interventions ... aortic valve without a traditional open-heart surgical approach. ...
(Date:7/24/2014)... Lynn E. Taylor, M.D., director of The ... the July, 2014 Rhode Island Medical Journal ... eliminating hepatitis c virus infection (hep c or ... capacity to address other health challenges, and improve ... the United States, Taylor says, include lack of ...
(Date:7/24/2014)... 2014 On October 24-25th, 2014, hundreds of ... the Embassy Suites LAX North for DiabetesSisters’ power-packed weekend conference. ... the first time it has convened Los Angeles, CA area. ... to open the entire event to both women with diabetes ... its kind worldwide for women with diabetes, the event offers ...
Breaking Medicine News(10 mins):Health News:Gene changes in breast cancer cells pinpointed with new computational method 2Health News:Gene changes in breast cancer cells pinpointed with new computational method 3Health News:Washington D.C. Decriminalizes Marijuana 2Health News:Penn study: Incisionless transcatheter aortic valve replacement surgery cuts hospital length of stay 2Health News:Miriam Hospital physician advocates awareness, collaboration to combat peaking hep C virus 2Health News:Miriam Hospital physician advocates awareness, collaboration to combat peaking hep C virus 3Health News:Miriam Hospital physician advocates awareness, collaboration to combat peaking hep C virus 4Health News:DiabetesSisters Brings Conference for Women with Diabetes Los Angeles for the First Time 2Health News:DiabetesSisters Brings Conference for Women with Diabetes Los Angeles for the First Time 3
... If you want to lose the kilos you,ve put on over ... to appetite play an important role in your likelihood of regaining ... highest levels of leptin and lowest levels of ghrelin are more ... Doctors often have to deal with patients who, after sticking to ...
... that a bacterium inside the worm acts as a ,disguise, ... it in an ineffective way. The bacteria protect the ... are removed with antibiotics, the immune system responds appropriately, releasing ... Antibiotics are successful against the parasite, but the long treatment ...
... HealthDay Reporter , TUESDAY, Jan. 11 (HealthDay News) -- ... and Advil, can raise the risk of heart ... suggests. Swiss researchers analyzed the results of 31 ... medications are called, and concluded that cardiovascular risk needs ...
... HealthDay Reporter , TUESDAY, Jan. 11 (HealthDay ... cancer surgery experience urinary incontinence afterward, but new research ... problems for a significant number of them. After ... pelvic exercises and bladder control techniques -- the researchers ...
... , TUESDAY, Jan. 11 (HealthDay News) -- The steady, ... and there has been an alarming increase in the number ... The abortion rate in 2008 was 19.6 per 1,000 women ... peak of 29.3 per 1,000 women, according to the nonprofit ...
... Launched on December 2, 2010, Healthy People 2020 ... health of all Americans. A key component, Education for ... People 2020 goals. Formulated by the Healthy People Curriculum ... objectives provides a vehicle for promoting the discussion and ...
Cached Medicine News:Health News:'Yo-yo' effect of slimming diets explained 2Health News:Study sheds new light on river blindness parasite 2Health News:Certain Painkillers Appear to Boost Odds for Heart Attack 2Health News:Certain Painkillers Appear to Boost Odds for Heart Attack 3Health News:Therapy May Help Cut Incontinence After Prostate Surgery 2Health News:Therapy May Help Cut Incontinence After Prostate Surgery 3Health News:Decline in U.S. Abortion Rate Stalls, Report Finds 2Health News:10-year roadmap for reaching public health education goals 2Health News:10-year roadmap for reaching public health education goals 3Health News:10-year roadmap for reaching public health education goals 4
(Date:7/24/2014)...  Lazarus Effect, a medical device company focused ... facilitate removal of blood clots, announced today that ... issued a new patent (U.S. Patent Number 8,795,305) ... TM and ReCover TM devices. ... stent-retriever (stentriever) with an integrated, novel, cover-based protection ...
(Date:7/24/2014)... , July 24, 2014 Consolidated Net ... Business Highlights   , India Business grew ... by 9.33% to Rs. 4,886.70 Mn Rest of World ... Europe Formulations Business grew by 34.53% to Rs. 977.26 Mn ... , Glenmark Pharmaceuticals Limited, the research-led global ...
(Date:7/24/2014)... -- In any given hospital in the country at any ... one hospital-acquired infection, according to the Centers of Disease ... prove fatal. And as increased surveillance has shown that ... per year, infection control efforts have drifted to the ... stronger emphasis is being placed upon innovative and comprehensive ...
Breaking Medicine Technology:Lazarus Effect Receives Notice of Allowance for New US Patent Covering Core Protection Technology 2Glenmark's Consolidated Revenue Increases by 20.08% to Rs. 14,869.40 Mn for Q1 FY 14 - 15 2Glenmark's Consolidated Revenue Increases by 20.08% to Rs. 14,869.40 Mn for Q1 FY 14 - 15 3Glenmark's Consolidated Revenue Increases by 20.08% to Rs. 14,869.40 Mn for Q1 FY 14 - 15 4Employees, Equipment and the Environment: Top Infection Prevention Focuses in Hospitals 2Employees, Equipment and the Environment: Top Infection Prevention Focuses in Hospitals 3
...  Medtronic, Inc, one of the world,s largest medical device ... U.S. Department of Justice (DOJ), the Office of the ... Services, and four relators in a qui tam suit ... in the U.S., including pacemakers and implantable cardioverter defibrillators ...
... A three-drug combination treatment for the blood cancer multiple myeloma ... patients, according to a multi-center study led by Andrzej ... the multiple myeloma program at the University of Chicago Medical ... of the phase I-II study on Dec. 12, 2011, ...
Cached Medicine Technology:Settlement Announced in Medtronic Qui Tam Case 2Drug Combination Highly Effective for Newly Diagnosed Myeloma Patients, Study Finds 2Drug Combination Highly Effective for Newly Diagnosed Myeloma Patients, Study Finds 3
Reliable and Affordable. The Schuco 3000 Nebulizer by Allied has been designed to offer a compact style that provides worry-free affordable nebulizer therapy....
... CNBT technology, which relieves the practitioner of the ... HOPE allows you the ability to mix medications ... be easier, with a length of oxygen tubing ... the HOPE nebulizer into an inexpensive alternative to ...
... utilizing Vibrating Mesh Technology to efficiently ... from Asthma, COPD or other respiratory ... size and handy carrying case that ... them. Powerful delivery comparable to table-top ...
... dilution nebulizer allows the clinician to deliver up ... into the side port for precise high flow ... for normal flow patients, delivers 8-12 lpm in ... side port. For your high flow needs, DHD ...
Medicine Products: