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Fear of predators in free-living wildlife reduces population growth over generations


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Predators kill prey and prey attempt to avoid being killed by predators; the former obviously reduces the number of prey but, according to a new study, fear (avoiding being killed) can itself halve the population size of prey in 5 years or less, by so impairing parental investment and care fewer than half as many young reach adulthood and those that do are permanently handicapped.

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