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6 March 2014 1:04 pm ,
Vol. 343 ,
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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Video: Mantis Shrimp Has a Whole New Way to See Color
23 January 2014 2:00 pm
The mantis shrimp looks like a peacock crossed with a lobster, and it lives in equally colorful coral reefs. So it may be no surprise that the crustacean appears to use an entirely new way to detect color. Researchers report online today in Science that the animal has 12 different types of receptors in its eyes that each perceives a different wavelength. Humans and honey bees get by with just three, but they use their brains to compute the different shades. To make the discovery, the researchers trained a species of mantis shrimp (Haptosquilla trispinosa) to grab at a single wavelength by attaching food to a tiny colored light. They then gave it a choice between the color the animal recognized and a new one. As the second color became increasingly close to the one that meant food, scientists could pinpoint when the shrimp could no longer differentiate between the two wavelengths. While the animals see individual colors, such as orange and yellow, all the variations in between look the same to them. Researchers think that the mantis shrimp sacrifices accurate color definition for quick color detection. And that helps them save brainpower as they rapidly detect friends, foe, and prey among the colorful coral.
(Video credit: Video courtesy of Mike Bok)