Dragonflies are literally scared to death of fish Bashny.Net

One presence of predatory fish in sight of the dragonfly larva throws in such stress, she may die.

Scientists from the University of Toronto conducted an experiment: they are placed in a transparent tank dragonfly larvae and predatory fish, moreover, they were separated from each other so that the dragonflies could see and feel the fish smell it, but to get to them, it could not. To their surprise, dragonflies began to die without any apparent reason. 11% of the larvae died before reaching adulthood, while, as the larvae to develop without such stress, died in infancy in only 2% of cases. The experiment was made in the study of the influence of psychological stress and adverse conditions for the development of living beings.

via factroom.ru