Reproductive Development Current Events | Reproductive Development News | 2
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Sophisticated sexual behavior in roosters
In the animal world, it's common for females to mate with several males during one and the same reproductive period. This leads to sperm competition, that is, sperm from several different males compete to fertilize the egg at the same time. The most common response to increased sperm competition is for males to increase the number of sperm cells... view more... (2003-11-10)
Southampton research tackles major issues of global reproductive health
The urgent need for family planning and reproductive health services in developing countries worldwide is being tackled by Southampton research expertise. view more (2000-01-20)
Prozac exposure found to disrupt mussel reproduction
Researchers from the National Institute of Standards and Technology (NIST) and North Carolina State University (NCSW) have demonstrated that a commonly prescribed antidepressant can interfere with the reproductive cycle of freshwater mussels-at least in a controlled setting. view more (2006-09-18)
New hormone data can predict menopause within a year
For many women, including the growing number who choose later-in-life pregnancy, predicting their biological clock's relation to the timing of their menopause and infertility is critically important. view more (2008-10-28)
THE BURDEN OF REPRODUCTIVE-ORGAN DISEASE IN RURAL GAMBIAN WOMEN (p1161)
The culture of silence surrounding reproductive-organ disorders in rural Gambian villages is more likely to be broken by focusing not on the possibility of acquiring HIV infection, as is done in many western cultures, but by educating people on the risk of infertility, conclude authors of a study published in this week’s issue of THE LANCET.... view more... (2001-04-11)
Procedure allows women to freeze eggs to preserve future fertility
Researchers at the Yale Fertility Center are now offering a cutting edge reproductive procedure called oocyte cryopreservation that allows women to freeze their eggs and use them at a later time to conceive a child. view more (2006-01-30)
Fish evolve a longer lifespan by evolving a longer reproductive period, researchers find
A UC Riverside-led research team has found that as some populations of an organism evolve a longer lifespan, they do so by increasing only that segment of the lifespan that contributes to "fitness" - the relative ability of an individual to contribute offspring to the next generation. view more (2005-12-27)
Plastics in common household items may cause fertility defects
The contaminant bisphenol-A (BPA)—widely used to make many plastics found in food storage containers and dental products—can have long-term effects in female development, according to a recent study by Yale School of Medicine researchers. view more (2007-02-15)
Human reproductive rates follow biological scaling rules
In nations with high per capita energy consumption, women have fewer children. This phenomenon is an unexpected consequence of the biological scaling relationship between metabolism and reproductive rate: larger species of mammals have higher metabolism but lower birth rates. In the April 2003 issue of Ecology Letters, Moses and Brown show that... view more... (2003-04-08)
Looser family ties lead to fewer children
A trend for fewer children might be the outcome of wider social networks and looser family ties, Psychologists from the University of Exeter say in new research. view more (2004-08-23)
Exposing chicks to maternal stress leads to long-term reproductive success
Do mothers purposely expose their offspring to their own stress? If so, why? view more (2008-10-21)
Study reveals surge in male-factor infertility technique
A national study reveals that the use of intracytoplasmic sperm injection or ICSI -- an assisted reproductive technology used to treat male-factor infertility -- has increased dramatically in the United States since 1995, while the proportion of patients receiving treatment for male-factor infertility has remained stable. view more (2007-07-19)
Lucky squirrels born with 'silver spoon' effect
As the saying goes, some people are born with silver spoons in their mouths. The same goes for at least one species of the animal world, according to research done in part by the University of Alberta. view more (2008-04-07)
Childhood environment influences reproductive function
A study led by researchers at UCL (University College London) demonstrates that female reproductive function is influenced by childhood environment. view more (2007-05-15)
Treatment advances for fibroids, menopause
Women with fibroids and endometriosis facing the possibility of hysterectomy may now choose less invasive treatment options to preserve fertility, according to Yale professor Aydin Arici, M.D., who will direct a scientific session exploring these alternatives at the American College of Obstetricians and Gynecologists (ACOG) Annual Clinical Meeting... view more... (2008-05-05)
Study identifies pathway required for normal reproductive development
Massachusetts General Hospital (MGH) clinical researchers, in collaboration with basic scientists from the University of California, Irvine (UC Irvine) have identified a new molecular pathway required for normal development of the reproductive, olfactory and circadian systems in both humans and mice. view more (2007-10-16)
Study discovers secret of Scottish sheep evolution
Researchers from the University of Sheffield, as part of an international team, have discovered the secret of why dark sheep on a remote Scottish Island are mysteriously declining, seemingly contradicting Darwin's evolutionary theory. view more (2008-01-18)
PREGNANCY AND CHILDBIRTH A MAJOR CAUSE OF DEATH AMONG AFGHAN REFUGEE WOMEN (pp 639, 643)
A survey of Afghan refugees done before the events of September 11, 2001, published in this week's issue of THE LANCET, highlights how a lack of access to health care for women of reproductive age results in pregnancy and childbirth being major risk factors for death among these Afghan women. There are an estimated 3.6 million Afghan refugees,... view more... (2002-02-20)
Saving Sperm For A Later Date
The Monty Python song was right: every sperm is sacred - if you're living in the promiscuous world of chickens that is. Scientists studying the evolution of reproductive behaviour have shown that cockerels use sophisticated strategies to maximise reproductive return from limited sperm reserves. University of Leeds researcher Dr. Tom Pizzari said:... view more... (2003-11-03)
2 reproductive factors are important predictors of death from ovarian cancer
Researchers from the Centers for Disease Control and Prevention (CDC) found that survival among women with ovarian cancer is influenced by age of menarche and total number of lifetime ovulatory cycles. view more (2009-07-09)
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