Even the smell of a predator can
have disastrous effects in populations of small size
Date: July 25, 2017
Source: McGill University
Summary: Fear alone may contribute to the extinction
of animal populations according to a recent study. When scientists exposed
fruit flies to the scent of a praying mantis, a known predator, they found that
the risk of extinction increased up to seven fold. The increased risk of
extinction occurred because at small population sizes, as the flies spent more
time being vigilant and less time eating, populations that declined could not
quickly rebound.
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