Navigation Links
Reproductive life of male mice is increased by living with females
Date:1/22/2009

Living with a female of its species can extend the reproductive life of a male mouse by a dramatic 20 percent, according to a study reported at the online site of the journal Biology of Reproduction.

In the research, conducted by a team at the University of Pennsylvania School of Veterinary Medicine, male mice were housed with or without female mice for 16 to 32 months. Each male was placed with two novel females at 2-month intervals to test its ability to impregnate the females.

The team, headed by Dr. Ralph Brinster, found that males housed with females did not show a drop in fertility until 32 months of age a 6-month increase in fertility over males housed alone.

The study also concluded that once fertility began to decrease, the rate of decrease was the same for both groups of males. The decline in fertility appeared to be due in part to defects in the sperm production process.

The researchers postulate that a female housed with a male mouse delays reproductive aging by affecting the cells surrounding the stem cells that produce spermatozoa in the testes.

The effect on the environment of the sprematogonial stem cells likely occurs through the male's endocrine and nervous systems, the scientists theorize.

"Whether this female influence occurs in other species is not known," Dr. Brinster notes.

If the effect is found to extend to other species, however, the authors point out that a 20 percent increase in male fertility could mean an extension of the male reproductive life span of years for various livestock animals and even decades for some large endangered species.


'/>"/>

Contact: Ralph Brinster
cpope@vet.upenn.edu
Society for the Study of Reproduction
Source:Eurekalert

Page: 1

Related biology news :

1. Study finds Viagra increases release of key reproductive hormone
2. Study identifies pathway required for normal reproductive development
3. Physician-scientists seek solutions to reproductive problems related to chromosomal variations
4. Reproductive plasticity revealed: Neotropical treefrog can choose to lay eggs in water or on land
5. W.M. Keck Foundation grant funds reproductive science research
6. New study shows compounds from soy affect brain and reproductive development
7. Trends in prescription medication sharing among reproductive-aged women
8. Rutgers scholar authors definitive biography of reproductive medicine pioneer
9. Exposing chicks to maternal stress leads to long-term reproductive success
10. In many fungi, reproductive spores are remarkably aerodynamic
11. Western diet linked to increased risk of colon cancer recurrence
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/28/2017)... -- The report "Video Surveillance Market by ... Devices), Software (Video Analytics, VMS), and Service (VSaaS, Installation ... 2022", published by MarketsandMarkets, the market was valued at ... reach USD 75.64 Billion by 2022, at a CAGR ... considered for the study is 2016 and the forecast ...
(Date:3/23/2017)... Research and Markets has announced the addition of the "Global ... 2025" report to their offering. ... The Global Vehicle Anti-Theft System Market is ... next decade to reach approximately $14.21 billion by 2025. ... all the given segments on global as well as regional levels ...
(Date:3/20/2017)... 20, 2017 PMD Healthcare announces the release ... Wellness Management System (WMS), a remote, real-time lung health ... PMD Healthcare is a Medical Device, Digital Health, and ... to creating innovative solutions that empower people to improve ... focus, PMD developed the first ever personal spirometer, Spiro ...
Breaking Biology News(10 mins):
(Date:4/26/2017)... ... April 26, 2017 , ... WonderWorks, Myrtle ... to showcase the future of deep space exploration and inspire space enthusiasts. The ... spacecraft and includes a guest appearance by former Shuttle Astronaut Don Thomas. , ...
(Date:4/26/2017)... Hong Kong (PRWEB) , ... April 26, 2017 ... ... be hosted in EMEA and North America this May ... from May 16-18 , Donald H. Taylor, Chairman of the Learning and Performance ...
(Date:4/25/2017)... ... 2017 , ... Franz Inc ., an early innovator ... market leader for Semantic Graph Database technology, today announced Allegro ... effective system for developing and deploying applications to solve the challenges developers face ...
(Date:4/25/2017)... ... April 25, 2017 , ... ... Metrology Partners.     , Covalent’s Analytical Services unit provides high-quality data to ... measured within 24 hours of receipt. There are no price premiums, and customers ...
Breaking Biology Technology: