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Increasing age of mothers in Spain leads to rise in mortality rates
A new study examining the evolution of maternal mortality rates in Spain since 1996 shows a 17% increase in deaths. This trend is linked to the widespread increase in maternal age. The highest death rates are among foreign women and those who live in the province of Malaga. view more (2009-07-02)
Bison reintroduction to Central Russia
Russian scientists are investigating the opportunity to bring wisents (Bison bonasus) back to the forests of Central Russia. Their effort has been funded by the Russian Foundation for Basic Research and the Federal Target Scientific and Technical Program called "Conservation of Rare Species". The story of rescuing wisents (Bison bonasus)... view more... (2004-05-17)
The precise role of seminal proteins in sustaining post-mating responses in fruit flies
Successful reproduction is critical to pass genes to the next generation. In sexually reproducing organisms, sperm enter the female with seminal proteins that are vital for fertility. view more (2007-12-18)
A new method to clone mice: an important step in the research for applications in the human
A simplified method for cloning mice, which has recently resulted in live offspring, has been developed at the Ghent University. Although a few laboratories have been successful in breeding mice by cloning, this is the first report on cloning of an adult mammalian animal in Belgium and using a self-developed purely mechanical method for nuclear... view more... (2000-12-18)
Gene chip technology will lead to quick and accurate genetic testing for cystic fibrosis
A single genetic test that is capable of detecting all mutations involved in the development of cystic fibrosis could be just a few years away, the 20th annual conference of the European Society of Human Reproduction and Embryology heard today (Monday 28 June). Researchers at Monash University in Melbourne, Australia, have discovered that recently... view more... (2004-06-28)
Keeping It In The Family
Blood really can be thicker than water in the insect world, a team of biologists at The University of Nottingham say in the journal Nature this week. The researchers, studying the unusual life-cycle of a parasitic wasp, found its larvae refused to attack close relatives even under extreme starvation conditions. Led by Dr Ian Hardy in the School... view more... (2004-08-02)
UK researchers shed new light on a cause of recurrent miscarriages
Women who carry a particular genetic mutation that predisposes them to blood clots have a significantly higher chance of miscarrying, according to UK researchers in a report (Wednesday 30 January) in Europe's leading reproductive medicine journal Human Reproduction.* The first prospective study into the outcome of untreated pregnancies in a group... view more... (2002-01-26)
US researchers sound warning note over postponing fatherhood - new findings confirm male fertility declines with age
Further evidence that men's fertility declines with age is reported today (Thursday 6 February) in Human Reproduction[1] - Europe's leading reproductive medicine journal. A study of 97 healthy non-smoking men aged from 22 to 80 has demonstrated that, as they age, men's semen quality declines. There was a continuous reduction in sperm motility... view more... (2003-02-02)
Nature's ambush: new research shows pregnancy more likely from single act of unprotected intercourse than previously believed
US research published today (Thursday 10 June) in Europe's leading reproductive medicine journal Human Reproduction[1] suggests that a single act of unprotected intercourse is more likely to lead to an unwanted pregnancy than was previously believed. In a study on women who had either been sterilised or were using an intrauterine device (IUD) the... view more... (2004-06-08)
Manipulating Cell Receptor Alters Animal Behavior
Researchers at the University at Buffalo and the University of Pennsylvania were the first to demonstrate that two intracellular events, both stimulated by the same cell receptor, can provoke different behaviors in mammals. view more (2006-03-22)
Genetic analysis finds greater threat in frog-killing fungus
A deadly fungus that has decimated populations of mountain yellow-legged frogs in the Sierra Nevada can likely be spread by sexual reproduction, seriously complicating efforts to save the frogs from extinction. view more (2007-08-07)
Plastics chemical retards growth, function of adult reproductive cells
Bisphenol A, a chemical widely used in plastics and known to cause reproductive problems in the offspring of pregnant mice exposed to it, also has been found to retard the growth of follicles of adult mice and hinder their production of steroid hormones, researchers report. view more (2009-07-09)
Tiny invasive snail impacts Great Lakes, alters ecology
Long a problem in the western U.S., the New Zealand mud snail currently inhabits four of the five Great Lakes and is spreading into rivers and tributaries, according to a Penn State team of researchers. These tiny creatures out-compete native snails and insects, but are not good fish food replacements for the native species. view more (2008-08-11)
Reef boom beats doom
Marine scientists say they are astonished at the spectacular recovery of certain coral reefs in Australia's Great Barrier Reef Marine Park from a devastating coral bleaching event in 2006. view more (2009-04-23)
New brain hormone puts brakes on reproduction
University of California, Berkeley, researchers have discovered a new actor in the mammalian reproductive system, a hormone that fills a role long suspected, but until now undetected. view more (2006-02-07)
Researchers block the transmission of malaria in animal tests
By disrupting the potassium channel of the malaria parasite, a team of researchers has been able to prevent the malaria parasites from forming in mosquitoes and has thereby broken the cycle of infection during recent animal tests. view more (2008-06-10)
Harm-reduction cigarettes are more toxic than traditional cigarettes, UC Riverside study finds
Typically, tobacco companies market harm-reduction cigarettes as being safer than traditional "full-flavored" brands, leading many smokers to conclude that the use of harm-reduction brands lowers their exposure to toxicants. view more (2008-12-09)
First direct evidence that environmental oestrogens affect sperm fertility
Researchers have found the first evidence that oestrogens from the environment, and also ones that occur naturally in our bodies, significantly affect the fertilising ability of sperm. Prof Lynn Fraser told the annual conference of the European Society of Human Reproduction and Embryology in Vienna today (Tuesday 2 July) that environmental... view more... (2002-06-30)
Searching out the small - and his massive mate
The male half of one of the strangest marine couples has been seen alive for the first time. The blanket octopus shows the greatest size difference between sexes of any large animal, with the male 100 times smaller and 40,000 times lighter than the female. University of Leeds researcher, Dr Tom Tregenza, saw the creature whilst diving off the... view more... (2003-01-31)
Female Plant 'Communicates' Rejection or Acceptance of Male
Without eyes or ears, plants must rely on the interaction of molecules to determine appropriate mating partners and avoid inbreeding. view more (2008-10-24)
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