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Tag: "reproductive" at biology news

Analysis of rhesus monkey genome uncovers genetic differences with humans, chimps

...tial research in neuroscience, behavioral biology, reproductive physiology, endocrinology and cardiovascular studies. In addition, the rhesus serves as a valuable model for studying other human infectious diseases and for vaccine research. The sequencing of the rhesus genome was conducted at the Baylor Coll...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

... contour, may contribute to his sexual prowess and reproductive success. The results of this research have recently been published in Journal of Anatomy. As in other species with harem-like mating systems, the voice organs of reindeer differ according to gender. Adult males have a much larger air sac than female...

Female chimps keep the bullies at bay

...apan. Female chimpanzees do not synchronize their reproductive activities which reduces the opportunities for les...date have suggested that females synchronize their reproductive activities. However, it has been very difficult to demonstrate this analytically. Matsumoto-Oda an...

Researchers identify ovarian cancer biomarkers

...lso found these markers were not present in normal reproductive tissues that experience blood vessel growth, such ...istaken for normal blood vessel growth in women of reproductive age. If the markers do prove to be specific to ovarian tumors, researchers believe that could be ...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

... a twin sister could put male saiga antelopes at a reproductive disadvantage, says new research published today. T...n average is one of the major limiting factors for reproductive success. Aline Kühl from Imperial College London's Division of Biology, lead author of the paper...

In young mice, gregariousness seems to reside in the genes

..."The initial genetic predisposition gets masked by reproductive maturity." This result is crucial, argue Lahvis and Panksepp, because it suggests that the genetic influences on juvenile social behavior may be quite distinct from genetic factors that affect adult social behavior, a finding the researchers sugge...

Parasites' impact goes beyond host to affect ecosystem

...tering their growth, behavior, nutritional status, reproductive abilities, and even their mortality ?but also the hosts?entire ecosystem. In the article, "Parasites alter community structure," lead author Chelsea Wood, then a Dartmouth College undergraduate, and UNH associate professor of zoology James Byers,...

Targeting sugar on blood vessels may inhibit cancer growth

...stems that rely on endothelial growth, such as the reproductive system and wound healing, remained robust." Studying mouse models with a genetic alteration in an important sugar-modifying enzyme (Ndst1), the researchers saw a marked decrease in the growth of experimental carcinomas. The Ndst1 enzyme is respon...

Why do oysters choose to live where they could be eaten?

... harsh environments or may be beneficial to future reproductive success. However, in the case of oyster larvae, th... to take advantage of future benefits of increased reproductive capacity when they mature. "Oyster larvae make a life or death decision when they get their one c...

Study shows lizard moms dress their children for success

...In females, throat color correlates with different reproductive strategies. According to Lancaster, the maternal effect on back pattern is important because survival in these lizards depends on different combinations of traits in different circumstances. Females use social cues to predict the circumstances the...

Undergraduate research shows leaderless honeybee organizing

...he bee colony is centered around the queen and her reproductive capabilities, findings by Schneider and others indicates that she does not exactly “rule.” Instead, the colony appears to be controlled by the anonymous consensus of the colony’s workers. Though it is of great interest to researchers studying soc...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...ke cow ovarian tissue and eggs. They start with reproductive tissues because young women with cancer produce a ...se egg donors later on,” says Dr. Adelina M. Emmi, reproductive endocrinologist and medical director of MCG Reproductive Laboratories of Augusta. Treatment for l...

Bigger horns equal better genes

...ex mature to the age when they begin competing for reproductive mates (7 to 12), horn length varies according to g...be a good indicator of an individual's quality and reproductive success," Coltman said. "We wanted to see if the same could be said for alpine ibex, and we found th...

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