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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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ScienceShot: I Spy a Cat in a Tree
3 September 2013 7:15 pm
Many mammals and birds make noisy calls when predators lurk nearby. Now, researchers have discovered that black-fronted titi monkeys (Callicebus nigrifrons) emit alarm calls that are remarkably versatile for primates, simultaneously announcing the type of predator and its location. To find out what the monkeys were conveying, scientists conducted experiments in Brazil’s Atlantic Rainforest with a stuffed raptor and cat. When the titi monkeys saw the raptor in the trees, they uttered a series of calls that mean “Raptor! Tree!” But when the monkeys discovered it on the ground, they mixed the calls: “Raptor! Ground!” Similarly, when they noticed a stuffed cat that the scientists placed on the ground, the monkeys warned: “Cat! Ground!” And when they encountered the cat in the canopy, they announced the location first, bursting out: “Tree! Cat!” Meerkats and chickadees can also announce the kind of predator and its whereabouts, but this telegraphing has never been discovered before in primates, the scientists report in the current issue of Biology Letters.