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April 2014    Download the Entire Issue (PDF) Vol. 29, No. 4   RSS Feed for Undercurrent Issues
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Flotsam & Jetsam

from the April, 2014 issue of Undercurrent   Subscribe Now

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Coral Bleaching Makes Fish Behave Recklessly. Fish on bleached coral reefs are fearless, according to a study in Journal of Animal Ecology. Instead of staying hidden at home, they stray out, making them easy prey for predators. Scientists at the Australian Research Council released fish onto both live and dead coral, and found that those on dead coral took more risks and moved further afield. While the smell of an injured mate prompted fish on live coral to take cover, their counterparts didn't react -- the death rate was 75 percent higher on dead coral. Apparently, dead coral masks key chemical signals, so the fish move away to access them....


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