Tag: "female" at biology news
New research on mulitple vs single births may offer new approaches for infertility
...xciting new opportunities for novel treatments for female
infertility. On the other side of the coin, BMP-15 could also serve as a new target for non-steroidal contraceptives." Recently, scientists have found that BMP-15 produced by eggs developing in the ovary plays an important role in determining ovulat...
Of mice and men's (and women's) contraceptives
... "Not many proteins are expressed in both male and female
germ lines that are specific only to the germ line...ll cause male infertility, and others for creating female
infertility, but not many that will lead to both male and female
infertility without affecting the s...
Highlights from the April issue of Ecology
... in the nests of Song Sparrows, with the sparrow's female
chicks loosing out. Shifts in open-ocean fish communities coinciding with the commencement of commercial fishing Comparing data from a 1950's scientific survey with observations collected on longline fishing vessels, Peter Ward and Ransom Myers (Da...
Water research initiatives at UW-Madison
...on wildlife, such as the presence of both male and female
tissue in the gonads of fish. EDCs enter rivers and streams through domestic and industrial wastewater and agricultural runoff. When high demand for groundwater lowers the water table, surface water can leach in, bringing contaminants like EDCs with ...
To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter
...that tiny male under the belly of a 20-pound adult female
that's returned to spawn, Quinn says. He's almost ...leasing their sperm in a competitive frenzy as the female
deposits her eggs. And the tiny male has avoided the harrowing journey taken by most salmon to the...
Elephant seal pups suffer from ocean warming
... Because their prey has migrated to colder waters, female
seals have to swim further and spend more time searching for food. As a result, they gain less body mass while pregnant and have fewer reserves to draw on during nursing. Nursing pups get all nourishment from their mothers; changes in ocean temperatu...
Compounds in plastic packaging act as environmental estrogens altering breast genes
...ing gene expression in the mammary glands of young female
laboratory rats exposed to the compounds through t...ood wraps and cosmetics. "In exposing prepubescent female
rats to BPA and BBP, our aim was to determine what effects, if any, each compound had on mammary gen...
Other highlights in the April 20 JNCI
...f ionizing radiation, a well-known risk factor for female
breast cancer, is also a risk factor for male breast cancer. To investigate the role of ionizing radiation in the development of male breast cancer, Elaine Ron, Ph.D., of the National Cancer Institute, and colleagues evaluated male breast cancer inci...
Mother's prenatal and lactational diet may protect daughters from breast cancer
...uld reduce the incidence rate for breast cancer in female
offspring significantly. Conversely, mothers' cons...d to an increased incidence of breast cancer among female
offspring. Meanwhile, many foods rich in omega-3 fatty acids are known to block the effects of estr...
Buying time through 'hibernation on demand'
...urological damage. For example: In May 1999, a female
Norwegian skier was rescued after submersion in icy water for more than an hour. When rescued she was clinically dead with no heartbeat, no respiration, and her body temperature had fallen to 57 degrees Fahrenheit (normal is 98.6 F). She was resuscit...
Live faster, die younger: The shortest-living vertebrate
...With a reproductive life span of just 25 days, the female
pygmy goby lays only three clutches of eggs, totaling about 400 eggs, in a lifetime. In a series of supplemental field studies, the researchers showed that many small reef fish may be under intense pressure from predators. Daily mortality rates of 2%...
DNA solves mystery of Gibraltar's macaques
...vant with mammals, such as macaques, that practice female
philopatry, a social system in which females remai...ndicating that the Gibraltar colony was founded by female
macaques from both regions. There are 19 species of macaques, which have proven to be remarkably ada...
Romond heads up study and reduces breast cancer recurrence
... in this country. An estimated 40,110 deaths from female
breast cancer will occur in 2005 in the United States, accounting for about 15 percent of all cancer-related deaths in women in the nation....
Webcast: Does ending collection of data make the problem go away?
...urvey to stop asking employers for their number of female
workers. In 2003, California voters rejected a constitutional initiative that would have prevented the state's agencies from collecting information about people's race and ethnicity. The 2000 U.S. census provided Americans for the first time with an ...
Scripps research scientists identify infertility molecule
...ies, however, the molecular mechanisms that govern female
infertility are not completely understood. In fact, the cause of infertility is not always easy to diagnose. The American Society for Reproductive Medicine estimates that the cause of infertility remains a mystery in about 20 percent of all cases. ...
Fungus-farming termites descend from an African rain forest Eve
...ble humans in another respect: just like the human female
ancestor was African, so was the 'Eve' of fungus-growing termites, and just as humans later migrated out of Africa, so have fungus-farming termites. Evidence suggests they have colonised Asia at least four times....
Certain fish have a special mating preference
...uppy-like fish, about an inch long) and found that female
mosquitofish spend 80 percent more time with males...al selection, such as sperm competition or cryptic female
choice. That is, most evolutionists have believed that for animals with internal fertilization -- l...
Monkeys adapt robot arm as their own
...he frontal and parietal lobes of the brains of two female
rhesus macaque monkeys. The faint signals from the electrode arrays were detected and analyzed by the computer system the researchers developed to recognize patterns of signals that represented particular movements by an animal's arm. In the initial...
Type 2 diabetes may begin with Grandma's diet
... City, showed that grandsons and granddaughters of female
rats fed an inadequate diet during pregnancy and/or lactation were more likely to become obese and insulin resistant than grandchildren of females fed an adequate diet. The research dramatically extends previous findings that poor maternal nutrition...
Why embryos need a good diet
...sibly by affecting genes, eggs within a developing female
fetus, or her reproductive organs. Many so-called programming effects probably operate by altering gene expression through "epigenetic processes". This can be induced during the embryonic period by environmental influences, which puts a twist ...
1 2 3 4 5 6 7 8 9 10