Daily non-political popular news in brief.
Divers find new species in Aleutians
11-02-2007 · EurekAlert!There are unknown creatures lurking under the windswept islands of the Aleutians, according to a team of scientific divers from the University of Alaska Fairbanks.
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Keywords: divers, species, aleutians, diver, specy, aleutian
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- Not all risk is created equal
08-28-2007 · EurekAlert!
A camper who chases a grizzly but won't risk unprotected sex. A sky diver afraid to stand up to the boss. New research shows that not all risk is created equal and people show a mixture of both risky and non-risky behaviors.
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- Long-term ocean data confirm fishing puts species in 'double jeopardy'
10-18-2006 · EurekAlert!
For the first time, research has shown that fishing can promote boom and bust swings in supplies of targeted fish stocks.
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- Michigan State researcher traces the evolution of honey bee gender
10-27-2006 · EurekAlert!
A first-of-its-kind evolutionary strategy discovered among invertebrate organisms -- or honey bees -- shows how a complex genetic mechanism determines gender and maximizes gene transmission to the next generation of several bee species."This research gives us a better understanding of the sex-determining system of honey bees, as well as the age and evolutionary history of the csd (complementary sex determination) gene," said Zachary Huang, an MSU associate professor of entomology.
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- Scientists discover way to block growth of prostate cancer cells
11-08-2006 · EurekAlert!
Scientists have discovered for the first time a specific biochemical pathway by which the sex hormone, androgen, increases levels of harmful chemicals called reactive oxygen species (ROS) in the prostate gland that play a role in the development of prostate cancer, the 18th EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics in Prague heard on Wednesday.
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- Ritualized submission and pseudo-copulation reduce aggression among male crayfish
11-20-2006 · EurekAlert!
Pseudo-copulation -- an interaction that mimics sexual copulation -- is a behavior known in mammalian communities that reduces aggression and signifies social dominance, particularly among males. However, this complex, so-called ritualized behavior is not widely known to occur among invertebrate species.
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- Study questions the 'biodiversity hotspot' approach to wildlife conservation
12-11-2006 · EurekAlert!
In recent years, major international conservation groups have focused their limited resources on protecting a small number of 'biodiversity hotspots'-threatened habitats that are home to many of the world's rarest plants and animals.But a handful of protected areas will not be sufficient to save the countless species of plants and animals facing extinction worldwide, according to a new study by scientists from Stanford University and the National Autonomous University of Mexico.
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- Mayo researcher discovers target site for developing mosquito pesticides
12-20-2006 · EurekAlert!
A Mayo Clinic researcher has discovered a target site within malaria-carrying mosquitoes that could be used to develop pesticides that are toxic to the Anopheles gambiae mosquito and other mosquito species. It would not affect humans and other mammals. If supported by further studies, the findings could offer a safer and more effective control of mosquito-borne diseases such as malaria.
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- Soil nutrients shape tropical forests, large-scale study indicates
01-11-2007 · EurekAlert!
Tropical forests are among the most diverse plant communities on earth, and scientists have labored for decades to identify the ecological and evolutionary processes that created and maintain them. A key question is whether all tree species are equivalent in their use of resources -- water, light and nutrients -- or whether each species has its own niche.A large-scale study by researchers at the University of Illinois at Urbana-Champaign and eight other institutions sheds some light on the issue.
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- For some species, an upside to inbreeding
02-05-2007 · EurekAlert!
Although breeding between close kin is thought to be generally unfavorable from an evolutionary standpoint, in part because harmful mutations are more easily propagated through populations in this way, theory predicts that under some circumstances, the benefits of inbreeding may outweigh the costs. Researchers have now reported real-life evidence in support of this theory.
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- Mistaken identity? When a white marlin may not always be a white marlin
02-26-2007 · EurekAlert!
The discovery of the roundscale spearfish, which closely resembles the white marlin, may have resulted in an overestimation of the population of the threatened white marlin, a recently rejected candidate for the Endangered Species List. A team of scientists describes the subtle differences between the two species and outlines the significance in the latest issue of the Bulletin of Marine Science.
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