Nerve cells (yellow) from the same parent cell are organized in 3-D columns that extend through the layers of the gut wall.
Credit: Reena Lasrado
Scientists have made an important step in understanding the organisation of nerve cells embedded within the...
The newly discovered Elfin mountain toad (Ophryophryne elfina) is in its natural habitat.
Credit: Nikolay A. Poyarkov Jr.
Deep in the foggy, moss-covered forests of Southern Vietnam, herpetologists uncovered one of the smallest species of horned mountain toads.
The name of the...
Top and side views produced by computer simulations show how water flows around the body of Parvancorina when the current is coming from the front (a), side (b) and rear (c). The arrows show the direction of the water...
Altrichthys alelia (Alelia's damselfish) is a new species of damselfish discovered in the Philippines. Unlike most coral reef fish, in this species the parents care for their young.
Credit: Giacomo Bernardi
The vast majority of coral reef fish produce large numbers...
Heliconius erato butterfly (stock image).
Credit: © Nneirda / Fotolia
By analyzing both the genes that control color detecting photoreceptors and the structural components of the eye itself, University of California, Irvine evolutionary biologists have discovered male and female butterflies of...
Zebra finch.
Credit: Atticus Pinzón-Rodríguez
Not only migratory birds use a built-in magnetic compass to navigate correctly. A new study from Lund University in Sweden shows that non-migratory birds also are able to use a built-in compass to orient themselves using...
This photograph shows Green Island moss bank with icebergs in background.
Credit: Matt Amesbury
In 2013, researchers studying mosses and microbes growing at the southern end of the Antarctic Peninsula documented unprecedented ecological change over the last 50 years, driven by...
“The strength of the fiber is significantly better than any human-made, silk-based material to our knowledge, and on the same level as what can be found in nature from spiders,” says Daniel Söderberg, a researcher with the Wallenberg Wood...
Duke researchers have discovered that gut microbes can alter the action of their host organism's genes. Mouse intestinal cells are outlined in red, with the cell nuclei stained blue and a protein called transcription factor Hnf4a stained green within...
Bioprosthetic ovary. By removing a female mouse’s ovary and replacing it with a bioprosthetic ovary, the mouse was able to not only ovulate but also give birth to healthy pups. The moms were even able to nurse their young.
Credit:...
Blue marlin. Fishing typically removes the largest fish from the population.
Credit: © go2dim / Fotolia
Cohort after cohort, fishing typically removes large fish from the population and can lead to rapid evolutionary changes in exploited fish populations. A new study...
