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6 March 2014 1:04 pm ,
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Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Swarming Locusts Grow Big Brains
25 May 2010 7:01 pm
When desert locusts (Schistocerca gregaria) become too great in number, they transform from solitary insects into swarming crop raiders. Their brains also get a lot bigger, according to a study published online tomorrow in the Proceedings of the Royal Society B. In the study, computer-assisted laser microscopy was used to create images like the one above, which shows that the brain of the gregarious locusts (right image, above) is 30% larger than those of solitary locusts. The images also revealed that solitary locusts have proportionately larger sensory regions (blue and cyan), which are used for vision and the perception of smells, whereas gregarious locusts have proportionately larger regions that deal with higher brain functions (yellow and orange), such as learning and memory. The higher brain functions may help gregarious locusts survive in the densely packed groups where competition for food is so fierce that cannibalism occurs.
See more ScienceShots.