Feeding time: stress and barnacles. The Economist (US) | January 11, 1992 | COPYRIGHT 1992 Economist Newspaper Ltd. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information) Copyright

LIFE, like business, is risky. Executives regularly make decisions which affect the economic health of their companies and, ultimately, themselves. Animals face similar problems. Coming out of hiding to eat exposes you to predators, but too much hiding stunts your growth and may reduce your reproductive capacity into the bargain. Weighing up the cost of lost feeding time against the risk of attack is a trade-off. With instincts finely honed by evolution, even the humblest animals are often suprisingly good at assessing the risks.

New evidence of this ability ...

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