Red sea urchins found to live up to 200 years
...nger than had been believed. "Sea urchins live as male and females, and fertilization of eggs takes place while they float in the ocean," Ebert said. "The larvae then feed for a month or more before turning into tiny sea urchins." The red sea urchin, in fact, does grow fairly quickly when it's young at...Catching evolution's henchmen in the act
...ain that causes male-killing in a beetle can cause male feminization in a butterfly", says Gwen Keller, who's busy writing up her dissertation on the subject. "The first generation of molecular Wolbachia research allowed us to tell which invertebrates were infected and to identify strains based on one or ...PTEN and prostate cancer--the devil is in the doses
...--which the results suggest may be the case, since male mice with only 30% of normal PTEN levels show massive and selective enlargement of the prostate, and even invasive tumors--then ongoing monitoring of PTEN levels could help tailor therapies based on promoting PTEN expression. For patients with comple...Familiarity decides if wolf spider loves 'em or eats 'em
...amiliar. However, the researcher has discovered, a male wolf spider unlucky enough to attempt to mate with...havior and possibly the evolution of traits." Many male wolf spiders have different looks, or phenotypes. They might have ornamental tufts of hair on their ...Research collaboration identifies gene essential to puberty
...s revealed another individual an African American male who had different mutations in the gene. About the time that the MGH team was further exploring the biology of GPR54, Seminara was contacted by researchers from UK biotechnology company Paradigm Therapeutics who had read the MGH team's previously p......and and Sweden went to Northeast Greenland to film male Atlantic walruses while they ate. Walruses eat invertebrate animals that live on the seabed. They are particularly fond of clams. Walruses suck out the soft part of the clam, and discard the empty shells. As clams can be buried up to 40 cm deep, the ...Unfaithful songbirds increase offspring fitness
...species that form socially monogamous pairs of one male and one female are often not monogamous in the str...h other females provide the only opportunity for a male to sire additional young. For females, the significance of promiscuity is less obvious. If evolution...Genetic basis for gender differences in the liver
...sing the female livers to adopt characteristically male patterns of gene expression. According to Dr. Christopher Krebs, first author of the study, "Using genetic tools, we set out to clone Rsl because of its role in establishing gender differences in liver function, particularly in drug metabolism. Ins...Researchers find genetic link to prostate cancer
... called polymorphisms, commonly found in Caucasian male populations. They found that one cluster of variations was more common in men with prostate cancer who had no family history of the disease, while another combination appeared more frequently in men who did not have the disease. The study suggests ......ould wipe-out life on earth, he simply protected a male and female of each species on the ark. Protecting contemporary biodiversity from the deluge of human activities that threaten life on earth is more difficult and requires a global network of reserves that includes all species. In the most recent iss...Cow's resistance to worms is genetically determined
...the end of the small intestine. Interestingly the male worms disappear out of the intestine first, followed by the female worms. This conclusion is based on a study six different parts of the small intestine, which in calves has a length of between 25 to 40 metres. In addition to this, Kanobana also disc...Standard improves tests of male DNA
... improve the reliability of laboratory analyses of male DNA. The result of several years of research, the ...six vials of very carefully analyzed DNA. Five are male samples, and one is female. Laboratories that perform forensics or paternity DNA analyses can use th...One-third of women feel distant from partner post-miscarriage
... women who miscarried. "When women felt that their male partners failed to do things to show they cared, women perceived greater distance in their relationships," Swanson says. "However, when women perceived that their partners engaged in mutual sharing of feelings and experiences, they claimed to be clos...Could a specific protein contribute to erectile dysfunction for the diabetic and obese?
...tile Response Measurements: Lean or obese-diabetic male rats between 15-18 weeks of age were used. The animals were anesthetized and the left carotid artery cannulated to continuously monitor the mean arterial pressure (MAP). The right corpus cavernosum was cannulated to permit continuous monitoring of in......Center, Augusta, GA. Methodology Three-week old male Sprague-Dawley rats were split into two groups: high fat (HR) rats, fed a modified chow containing 36% fat and control rats, which were fed normal rat chow. The studies were carried out on 13-week old rats, and animals were fasted overnight prior to...Resistance exercise resets the body clock
.... These biopsies were taken from both legs of four male volunteers, 6 and 18 hours after they had exercised only their right leg for half an hour. To find out if the expression of different genes in skeletal muscle varied over time, the researchers assessed which genes were 'switched on or off' at differ...Hormonal changes in satisfied and dissatisfied shift workers across a shift cycle
...been in use for more than 20 years. A total of 62 male shift workers were invited to participate in two health examinations where blood was drawn. Eventually, the study group included 42 men, of which 22 were satisfied (mean age of 44 years) and 20 dissatisfied (mean age 41 years). Relatively few shift ...Findings offer further understanding about growth and development in young male gymnasts
...nd skeletal development on the onset of puberty in male gymnasts. The researchers hypothesized that after several years of training, the increased energy expenditure by elite gymnasts would result in lower levels of testosterone than other boys of their age, leading to a delay in physical growth character...Victoria Hale of Institute for OneWorld Health Named Fellow by International Women's Forum
... developing world. "As a woman in a predominantly male scientific culture and as a social entrepreneur carving out new territory for an enterprise that is also lacking female mentorship, leveraging institutional change requires powerful connections and partnerships," Hale says. "This fellowship is a tre...Women who drink may be at greater risk of cardiovascular complications than men
...re cardiovascular effects from heavy drinking than male alcoholics; these effects are noted earlier and at...from heavy alcohol drinking than those observed in male alcoholics, and these effects are noted at an earlier stage of drinking and at a lower consumption l...