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This is Edward H. Egelman, Ph.D., and UVA's Titan Krios microscope.

Mosquito sex-determining gene could help fight dengue fever

Virginia Tech scientists identify a genetic switch called Nix in Aedes aegypti  mosquitoes that underlies the difference between males and females.Males aren't relevant -- at least when it comes to disease transmission by mosquitoes.

Scientists announce top 10 new species for 2015

New species of pufferfish, Torquigener albomaculosus: A male (right) biting on the left cheek of a female while they were spawning.A cartwheeling spider, a bird-like dinosaur and a fish that wriggles around on the sea floor to create a circular nesting site are among the species identified by the SUNY...

Seeing without eyes

This is a a California two-spot octopus hatchling.The octopus has a unique ability. It can change the color, pattern and even texture of its skin not only for purposes of camouflage but also as a means of...

Male Java sparrows may 'drum' to their songs

A male and female Java sparrow performing a mutual courtship display.Male Java sparrows may coordinate their bill-clicking sounds with the notes of their song, according to a study published May 20, 2015 in the open-access journal PLOS ONE by Masayo...

Symbiosis turns messy in 13-year cicadas

Sections of the bacteriome in two types of cicadas, <em>Tettigades</em> (left) and <em>Magicicada</em>, with <em>Hodgkinia</em> stained red and another bacteria, <em>Sulcia</em> stained green.Bacteria that live in the guts of cicadas have split into many separate but interdependent species in a strange evolutionary phenomenon that leaves them reliant on a bloated genome, a...

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Scientists identify crucial step in helping to prevent Hepatitis C virus replicating

The attached image shows molecular dynamics simulation showing the aggregation of the NS4B protein on the bilayer surface.New research from the University of Southampton has identified how changes in the cell membrane play a pivotal role in how the Hepatitis C virus replicates.

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New link between ocean microbes and atmosphere uncovered

Prather and coworkers induced two phytoplankton blooms in this 3,400-gallon wave machine to study ocean biology impacts on sea spray composition.Few things are more refreshing than the kiss of sea spray on your face. You may not realize it, but that cool, moist air influences our climate by affecting how...

A helping paw for a sinking rat

A study shows that rats will try to save members of their own species from drowning.Rats have more heart than you might think. When one is drowning, another will put out a helping paw to rescue its mate. This is especially true for rats that...

Deciphering the neural code that links food to aging

Diet exerts a major impact on health and aging. The nervous system plays an important role in this process but, thus far, how food signals are interpreted by the nervous...

Massively parallel biology students

The Genomics Education Partnership coordinated by Washington University in St. Louis was founded to give more students a hands-on research experience. Here GEP staff member Wilson Leung is working with junior Sarah Swiezy to find motifs that regulate gene expression or silencing by comparing the DNA of different fruit fly species.The list of authors for an article on the comparative genomics of a fruit fly chromosome, published online May 11 by the journal G3, runs three single-spaced pages. Large author...

Biodiversity: 11 new species come to light in Madagascar

Shown here is a panther chameleon.Madagascar is home to extraordinary biodiversity, but in the past few decades, the island's forests and associated biodiversity have been under greater attack than ever. Rapid deforestation is affecting the...

Partly human yeast show a common ancestor's lasting legacy

This image shows Baker's yeast growing on an agar plate.Despite a billion years of evolution separating humans from the baker's yeast in their refrigerators, hundreds of genes from an ancestor that the two species have in common live on...

Planktonic world: The new frontier

When you mention rich ecosystems that are vital for life on Earth, people tend to think of rainforests, but ocean plankton are actually just as crucial. The microscopic beings that...

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Genetic maps help conservation managers maintain healthy bears

Mizzou researchers provide detailed "genetic maps" that could help conservation management officials maintain healthy bear populations throughout North America.Last year, researchers at the University of Missouri published a study on genetic diversity in American black bears in Missouri, Arkansas and Oklahoma and determined that conservation management is needed...

What did the first snakes look like?

This is a reconstruction of the ancestral crown-group snake, based on this study. Artwork by Julius Csotonyi. Full resolution image available to download from: <a href="http://bit.ly/1FmWwiw" target="_blank">http://bit.ly/1FmWwiw</a>The original snake ancestor was a nocturnal, stealth-hunting predator that had tiny hindlimbs with ankles and toes, according to research published in the open access journal BMC Evolutionary Biology.

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Giant panda gut bacteria can't efficiently digest bamboo

It's no wonder that giant pandas are always chewing and eating, say Chinese researchers: their gut bacteria are not the type for efficiently digesting bamboo.

Jumping spiders are masters of miniature color vision

The <i>Habronattus sunglow</i> is a species of jumping spider that has "true" color vision. This is a male.Jumping spiders were already known to see in remarkably high resolution, especially considering that their bodies are less than a centimeter long. Now, researchers reporting in the Cell Press journal...

Male hormones help lemur females rule

In many of the more than 100 recognized species of lemurs, females run the show. Here, a crowned lemur female hogs a sprig of honeysuckle from her mate.Lemur girls behave more like the guys, thanks to a little testosterone, according to a new study.

Ants' movements hide mathematical patterns

These are Argentine ants (<I>Linepithema humile</I>).When ants go exploring in search of food they end up choosing collective routes that fit statistical distributions of probability. This has been demonstrated by a team of mathematicians after...

Vineyard habitats help butterflies return

A caterpillar of a monarch butterfly feeds on milkweed in a WSU Prosser vineyard in June 2014.Washington wine grape vineyards experimenting with sustainable pest management systems are seeing an unexpected benefit: an increase in butterflies.

Master orchestrator of the genome is discovered, UB stem cell scientists report

UB research suggests a new paradigm, visualized in this diagram, for developmental global genome programming by the nuclear FGFR1 protein.One of developmental biology's most perplexing questions concerns what signals transform masses of undifferentiated cells into tremendously complex organisms, a process called ontogeny.

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