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It takes a village -- Female ducks negotiate joint rearing of ducklings
01-10-2007 · EurekAlert!Female eider ducks are well known to team up and share the work of rearing ducklings, but it now appears that they also negotiate not only how much effort each puts into the partnership, but also profit-sharing. An international group of scientists used a long-running study of the eider population in a Finnish archipelago to test predictions about how each hen seeks to maximize her benefits from the partnership without making it so unattractive that other hens withdraw their participation.
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Keywords: village, female, ducks, negotiate, joint, rearing, ducklings, duck, duckling
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- Virtual duck bills demonstrate species coexistence
02-26-2007 · EurekAlert!
How do species coexist rather than outcompete? The classical explanation is that each species has evolved morphological traits that allow it to exploit different resources more efficiently, but direct evidence is rare. Using dabbling ducks, like the mallard, which are primarily filter feeders, Gurd demonstrates that different lengths of lamellae -- the comb-like projections on the bill that sieve food particles from pond water -- allow duck species to coexist.
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- Super-fermenting fungus genome sequenced
03-04-2007 · EurekAlert!
On the road to making biofuels more economically competitive with fossil fuels, there are significant potholes to negotiate. For cellulosic ethanol production, one major detour has being addressed with the characterization of the genetic blueprint of the fungus Pichia stipitis, by the U.S. Department of Energy Joint Genome Institute (DOE JGI) and collaborators at the U.S. Forest Service, Forest Products Laboratory. The research is featured in the March 4 advanced online publication of Nature Biotechnology.
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- UGA study identifies North American wild bird species that could transmit bird flu
10-23-2006 · EurekAlert!
University of Georgia researchers have found that the common wood duck and laughing gull are very susceptible to highly pathogenic H5N1 avian influenza viruses and have the potential to transmit them.
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- Opposites do not attract
11-13-2006 · EurekAlert!
A study conducted at the University of California, Irvine, found that a female budgerigar prefers to mate with a male that sounds like her. Biologists Marin Moravec, Professor Nancy Burley and Professor Georg Striedter conducted the study, which was published in Ethology in early November. The study also found that males that paired with more similar-sounding females gave more help to the females when they were nesting.
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- Female Antarctic seals give cold shoulder to local males
02-07-2007 · EurekAlert!
Female Antarctic fur seals will travel across a colony to actively seek males which are genetically diverse and unrelated, rather than mate with local dominant males. These findings, published in this week's Nature, suggest that female choice may be more widespread in nature than previously believed and that such strategies enable species to maintain genetic diversity.
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- New project to analyze why Polycystic Ovary Syndrome and insulin resistance are so closely linked
03-12-2007 · EurekAlert!
Understanding the link between Polycystic Ovary Syndrome (PCOS) and insulin resistance is the aim of a new project announced today, funded by the charity WellBeing of Women. It is known that women with PCOS have a 3-fold increase in their risk of developing type-2 diabetes, where the body does not produce enough insulin or cannot use insulin properly. Insulin resistance is an important factor in the condition, which is the most common female hormone disorder.
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- Hearts of male and female rainbow trout are different
04-30-2007 · EurekAlert!
A new study expands upon previous findings that sex differences in cardiac performance and metabolism exist in fish in general, and have now been found to occur in rainbow trout in particular.
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- Growth in ADHD medication use due to improved ADHD identification in adult and female patients
06-07-2007 · EurekAlert!
Attention deficit hyperactivity disorder has been traditionally viewed as a childhood disorder, while ADHD in adults has been underdiagnosed and undertreated. A recent study shows that treatment rates have been increasing in all age groups, and improved identification has contributed to rapidly growing treatment rates for adults. Female patients show the greatest increase of all.
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- JCI table of contents: July 12, 2007
07-12-2007 · EurekAlert!
This release contains summaries, links to PDFs and contact information for the following newsworthy papers to be published online, July 12, 2007, in the JCI, including: "Src inhibitors may prove beneficial in breast cancer therapy"; "The clot thickens: protein interaction is a drug target for blood clot prevention"; "Eap1 in the brain regulates the female reproductive cycle"; and "Which T cell types drive the autoimmune response in multiple sclerosis?"
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- Revealing estrogen's secret role in obesity
08-20-2007 · EurekAlert!
Research on the effects of the female sex hormone estrogen in the brain lend credence to what many women have suspected about the hormonal changes that accompany aging: Menopause can make you fat. In animal experiments, researchers showed how estrogen receptors in the brain serve as a master switch to control food intake, energy expenditure and body fat distribution. The study will be presented in August at the American Chemical Society national meeting in Boston.
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