|
Title: Fear of predators is not "natural":study Post by: Orstio on June 22, 2007, 05:09:55 PM http://www.reuters.com/article/scienceNews/idUSN2136840820070621?feedType=RSS
DALLAS (Reuters) - Fear of predators is not instinctive but is a learned behavior that only develops when prey species share space with animals that eat them, according to a new study released this week. The study's conclusion: remove the lions, and the zebras will lose their fear of them. But add wolves to a new territory and the resident elk or moose will soon learn they spell trouble. Conducted by Dr. Joel Berger of the Wildlife Conservation Society, or WCS, the study compared the behavior of four prey species in three different settings: locations where predators still prowled; areas where top predators no longer exist; and places where carnivores had been reintroduced. |